  Linux PPP HOWTO
  Robert Hart, hartr@hedland.edu.au 
  ޤߤĤҤ isle@st.rim.or.jp (1997/01/30) 
  v2.2, 25 August 1996

  ʸǤ Linux PC  PPP Ф³ˡ2 ĤΥͥåȥ
   PPP ǤĤʤˡʤ Linux ޥ PPP Фˤˡˤ
  ޤ
  ______________________________________________________________________

  Table of Contents:

  1.      ȥ

  1.1.    饤ȤȻȤ륵ӥ

  1.2.    ǥȥӥ塼󤴤Ȥΰ㤤

  2.      IP ֹ

  3.      ʸŪ

  3.1.    PPP 饤Ȥꤹ

  3.1.1.  DIP ϻȤ鷺 CHAT Ȥ

  3.2.    PPP Ф

  3.3.    2 Ĥ LAN뤤 LAN ȥ󥿡ͥåȤ PPP ³ˡ

  3.4.    ʸ񤬰ʤꡢ

  4.      ʸǰեȥΥС

  5.      ¾ͭ/פʸ

  5.1.    ͭѤ Linux ϢΥ᡼󥰥ꥹ

  6.      Linux ͥ

  7.      Linux ͥ륽Υ󥹥ȡ

  8.      ϡɥˤĤ

  9.      ͥΥѥ - Linux 1.2.13 ξ

  9.1.    ͥΥѥ - Linux 1.3.x  2.0.x ξ

  9.2.    PPP-2.2  /proc/net/dev ˤĤ

  9.3.    ͥΤ¾ˤĤ

  10.     PPP ³򤹤뤿ɬפʾ

  10.1.   ǥͳؤ³ƥ

  11.     ꥢݡȤȤΥԡɤˤĤƤΥ

  12.     ǥ

  12.1.   ꥢݡȤΥեˤĤ

  13.     PPP ȥ롼ȸ

  14.     PPP ³ե

  14.1.   options.tbl ե

  14.2.   ɤΥץꤹ٤

  14.2.1. /etc/ppp/options(PAP/CHAP Ȥʤ)

  14.2.2. /etc/ppp/options (PAP/CHAPȤ)

  15.     /etc/resolv.conf ե

  16.     PAP/CHAP ǧڥե

  16.1.   PAP ǧڥե

  16.2.   CHAP ǧڥե

  17.     PPP ³ưǵư

  18.     ³ưˤ - ³ѥץȤκ

  18.1.   桼̾ȥѥɤĤäǧڤξ

  18.2.   ppp-on ץ

  18.3.   PPP ưץȤν

  18.3.1. ppp-on ץ

  18.3.2. ¦Ǥ PPP γ

  18.3.3. ppp-on-dialer ץ

  18.4.   chat ץȤΰ̣

  18.5.   PAP/CHAP ǧڤȤΥץ

  18.6.   pppd ΥǥХå -f ǻꤹ륪ץե

  19.     ³ץȤΥƥ

  20.     PPP ³νλ

  21.     ǥХå

  21.1.   PPP 򥳥ѥ뤷ΤǤLinux ǧƤޤ

  21.2.   ǥեȥ롼(default route)Ǥޤ

  22.     2 ĤΥͥåȥ PPP ǤĤʤˤ

  22.1.   IP ֹ

  22.2.   ϩ

  22.3.   ͥåȥƥ

  23.     ³Ω塢

  23.1.   ̤ηϩ

  23.2.   e-mail ν

  24.     󥯤νλ

  25.     LAN Υ롼ƥ󥰤˴ؤ

  25.1.   ƥˤĤƤΥ

  26.     ɤ褦ʤȤˡ

  27.     ³ޤäƤ鵯䤹

  27.1.   PPP Ф³Ǥޤ

  27.2.   e-mail ФǤȤޤ

  27.3.   ʤ¾οͤ finger  WWW, gophertalk ǻΥޥ³
  ʤΤǤ礦

  28.     ưŪ IP ֹǥ󥿡ͥåȤγƼ掠ӥȤˤ

  28.1.   e-mail 

  28.2.   ʥ͡ॵФ

  29.     PPP Ф

  29.1.   ͥΥѥ

  29.2.   Хƥγ

  29.3.   եȥ򽸤

  29.4.   ɸŪ(ͳ)³

  29.5.   PPP Υץե

  29.6.   pppd 桼(ޤ)ư褦ꤹ

  29.7.   pppd ѤΥꥢ

  30.     PPP ̥ǥ(ꥢľ)ǻȤˤ
  ______________________________________________________________________

  Copyright

  The copyright of this document is retained by the author.  Permission
  is granted to distribute the document by electronic means and  on CDs
  provided that it is kept entirely in its original format. Permission
  is also granted to print a copy of this document for personal use.

  The republishing of this document in part or in whole without the
  permission of the copyright holder by any means other than as noted
  above is prohibited.

  ʸԤݻƤޤɽΤޤ޻Ĥ
  ¤ꡢɤΤ褦ŵŪˡǤ⡢뤤 CD ѤۤĤ
  ޤޤĿͤʻѤʤФʸץȥȤ뤳Ȥǧ
  

  嵭ʳˡˤ뤳ʸΰ뤤ΤκۤϡԤ
  ʤ¤ػߤޤ

  

  ʸϥС󤬿ʤ뤴Ȥcomp.os.linux.answersƤ
  ޤޤʲURLHTMLǤǽǤ

  o  Linux Howto Index <http://sunsite.unc.edu/mdw/linux.html#howto>

  ¾Υեޥå(SGMLASCIIpostscriptDVI) Howtos - other
  formats <ftp://sunsite.unc.edu/pub/Linux/docs/HOWTO/other-formats>
  Ǥޤ

  sunsite.unc.edu ϤĤͤ˹پ֤ˤʤäƤޤΤǤ᤯Υߥ顼
  (㤨ftp.hitachi.co.jp)Ѥ

  ռ

  ʸ뤿¿ο͡Ƥޤä PPP Τ
  ΤˤĤƶƤ줿 Al Longyear(󡢤ʸ˴ְ㤤
  СϻǤǤ)Linux Howto Υƥʥô Greg
  Hankins linuxdoc-sgml ѥåƤ줿 Daniel
  Berinson(ڤ 3 ʤä)ʸΥơ
  ΤˤĤ¿νͿƤ줿 Debi
  Tackett(MaximumAccess.com)˴դޤ

   e-mail ǤޤޤʥȤ򤯤ä¿ˤⴶդޤ
  ¾ HOWTO Ʊ͡ʸ񤬼Ȥʤä͡鴶դ뤳
  桹ͣ󽷤ǤꡢǽʬʤΤǤʸ񤯤Ȥǡ
  ޤ᤿Ƥ Linux 桼äƤ롢䤿繥 OS 
  ꡢƥʥ󥹤ƤƤ͡Фڤ򾯤Ǥ֤ȤǤ
  СȻפäƤޤ

  1.  ȥ

  PPP(Point to Point Protocol)ϥꥢ³ IP(Internet Protocol)
  ¾ΥͥåȥץȥۤƯ뤿λȤߤǤ
  PPP ϥ̥ǥͳľ뤷ꥢ³ telnet 塢뤤ϥǥ
  òͳ³ξǤĥ뤳ȤǽǤPPP ȤФʤ
   Linux PC  PPP Ф³ΥФ³Ƥͥåȥ
  񸻤ˤ(ۤȤ)ľܤΥͥåȥ³Ƥ뤫Τ褦
  ȤȤǽˤʤޤ

  ޤʤ Linux PC  PPP ФȤꤹС¾Υԥ塼
  òͳ³ʤ Linux PC /뤤ϡͥåȥ
  ˥뤳ȤǽǤ

  PPP ϰа̿ǤPPP Ȥä 2  Linux PC Ĥʤ
  ǡ 2 ĤΥͥåȥ³뤳(뤤ϥͥåȥ
  󥿡ͥåȤ³뤳)ǽǤ

  PPP ȥͥå³礭ʰ㤤ΰĤϥԡɤǤɸŪʥ
  ͥå³Ūʺž®٤ 10Mbps(äɴӥå)Ǥ
   PPP ξ硢®ΥǥǤ 33.6kbps(1 ä 1000 ӥå)
  ޤPPP ³η֤ˤäƤϻȤ륢ץꥱ䥵ӥ
  ¤뤳Ȥ⤢ޤ

  1.1.  饤ȤȻȤ륵ӥ

  PPP ϸ̩ʰаΥץȥǤʤ(Ūˤ)ä򤫤
  ¦Υޥȼ¦Υޥ˰㤤Ϥޤ󡣤ʤ顢äʬ
  䤹뤿˥Фȥ饤ȤȤ̤դƻȤȤˤ
  

  ä򤫤 PPP ³Ω¦ΥȤ򥯥饤ȤȸƤӡ³
  Υޥ򥵡ФȸƤ֤Ȥˤޤ

  ä PPP ³Ѱդ¦ Linux ޥꤹ硢PPP 
  ФꤷƤ櫓Ǥ

  Ƥ Linux PC  PPP ΥФˤ⥯饤ȤˤʤޤʣΥ
  ꥢݡ(ɬפʤХǥ)СΥޥ󤬥Фȥ饤
  ȤƱˤʤ뤳ȤǽǤҤΤ褦ˡPPP ³ΩƤ
  Х饤ȤȥФδ֤ˤϲΰ㤤⤢ޤ

  ʸǤä򤫤¦Υޥ򥯥饤ȤȤä
  ơ(桼 ID ѥɡ뤤Ϥ¾λȤߤ)桼ǧڤ
  ¦Υޥ򥯥饤ȤȸƤ֤Ȥˤޤ

  ۤȤɤοͤϡPPP 򥯥饤¦ǻȤ󥿡ͥåȤ³Ƥ
  ޥ³뤳Ȥ˶̣򤪻Ǥ礦ξ硢 PC 
  饤ȤȤƻȤäƤ櫓Ǥ

  ʸƤ˽С󥿡ͥåȤ˼ưŪ³뤳
  Ȥǽˤʤޤ

  äơLinux PC  PPPФȤꤹˡˤĤƲ⤷ PPP 
  Ȥä 2 Ĥ LAN (ʥ롼ƥ󥰤)³ˡˤĤƤ
  ޤ( WAN - Wide Area Network - ³Ǥ褯ˡǤ)

  1.2.  ǥȥӥ塼󤴤Ȥΰ㤤

  ˤϤޤޤ Linux Υǥȥӥ塼󤬤ꡢ줾
  ȼˡäƤޤ

  Linux(Unix) ޥưݤˡȳƼΥ󥿡ե
  ˡˤϡ礭 2 Ĥˡޤ

  ĤBSD εưˡǤꡢ⤦ĤSystem V εư
  ˡǤĤ Unix ˴ؤ˥塼롼פˤʤäʤ
  СξԤδ֤˻ȤƵʹȤ⤢Ǥ礦μ
  ε˶̣лäƤߤ뤳Ȥ򤤤Τޤ

  ¿ʬ Linux ǤäȤ⹭ȤƤǥȥӥ塼Τ

  o  Slackware
      BSD εưˡѤƤꡢ

  o  Red Hat (Ȥͳ褹 Caldera)
      SysV εưˡѤƤޤ

  BSD εưˡǤϡưѤΥե /etc/... ˤꡢʲ
  褦ʥեˤʤäƤޤ

  ______________________________________________________________________
          /etc/rc
          /etc/rc.local
          /etc/rc.serial
  ______________________________________________________________________

  System V εưˡǤϡưѤΥե /etc/rc.d/... ˤ
  ꡢ¿Υ֥ǥ쥯ȥ꤬ѰդƤޤ

  ______________________________________________________________________
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 init.d
  -rwxr-xr-x   1 root     root         1776 Feb  9 05:01 rc
  -rwxr-xr-x   1 root     root          820 Jan  2  1996 rc.local
  -rwxr-xr-x   1 root     root         2567 Jul  5 20:30 rc.sysinit
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 rc0.d
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 rc1.d
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 rc2.d
  drwxr-xr-x   2 root     root         1024 Jul 18 18:07 rc3.d
  drwxr-xr-x   2 root     root         1024 May 27  1995 rc4.d
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 rc5.d
  drwxr-xr-x   2 root     root         1024 Jul  6 15:12 rc6.d
  ______________________________________________________________________

  ͥåȥ󥿡ե䤽˴Ϣͥåȥηϩ椬
  Τ褦ꤵƤ뤫Ĵ٤ˤϡΥեåơ
  ºݤˤԤʤäƤ륳ޥɤդɬפޤ

  ĤǤ(㤨 Red Hat  Caldera) X ɥ١ PPP
  ġ뤬°Ƥ礬ޤʤ顢 HOWTO 
  ϡΤ褦Υǥȥӥ塼˰¸ġϤ
  󡣤Υġ꤬ϡǥȥӥ塼κ
  ľܿҤͤƤ

  2.  IP ֹ

  󥿡ͥåȤ³ƤΥǥХȼ IP ֹäƤʤ
  ФʤޤIP ֹ뤿ȿϳƹ񤴤Ȥ֤Ƥ
  

  LAN ͳƥ󥿡ͥåȤ³硢餫᤽ LAN Ѥ˳
  Ƥ줿 IP ֹ椫顢LAN ³ƤƤΥԥ塼ȥ
  Х IP ɥ쥹ꤷʤФޤ󡣾¤ IP ֹ
  Ȥä LAN (󥿡ͥåȤϸޤǤʤ)³ƤϤޤ
  ǰξ硢ñưʤǤʤʤΡ IP ֹ椬
  ֹȤäƤ륳ԥ塼̿ȴĤ纮⤿餹ǽ
  餢ޤ

  ʸǻȤ IP ֹ(Ĥ㳰)󥿡ͥåȤ
  ³ʤͥåȥѤˤ餫ѰդƤֹ椫Ǥ
  뤳ȤդƤ

  󥿡ͥåȤ³Ƥʤ LAN ѤѰդ줿 IP ֹϰʲ̤
  Ǥ

  o  Class A Υɥ쥹 1 
     10.0.0.0 - 10.255.255.255

  o  Class B Υɥ쥹 16
     172.16.0.0 - 172.31.255.255

  o  Class C Υɥ쥹 256
     192.168.0.0 - 192.168.255.255
  ʤι IP ֹδȿ IP ֹƤƤäƤʤ (
  )LAN ˤϡ IP ֹ椫ϢֹꤢƤƻȤäƤ
  

   IP ֹϥ󥿡ͥåȤ³ƤǥХˤϷ褷ƻȤä
  Ϥޤ󡣤ʤ顢󥿡ͥåȤ³ƤޥΥ
  ʥͥåȥ󥿡ե˳Ƥ뤳ȤϲǽǤʤʤ顢IP
  ֹȤΤϼºݤˤϥͥåȥ󥿡եդΤǤꡢ
  ԥ塼դΤǤϤʤǤǤ顢ͥåȥ
  ե (㤨)10.0.0.1 ǤäƤ⡢PPP Ȥäƥ󥿡ͥåȤ
  ³硢PPP 󥿡ե̤(ͭ) IP ֹ򥵡Ф
  ƤƤ館СPPP ͳǥ󥿡ͥåȤ³뤳ȤϲǽǤ
  ξ硢ʤΥޥ󤫤ϥ󥿡ͥåȤ³ǤޤLAN ³
  ¾Υԥ塼³Ǥޤ

  ʤ顢Linux  ipfwadm եȤ IP masquerade ǽȤС
  LAN ³¾Υޥ󤫤⥤󥿡ͥåȤ³뤳Ȥǽˤʤ
  ޤ(Ȥ륵ӥ¿¤Ϥޤ)

  masquerade ǽξܺ٤ˤĤƤ IP Masquerade mini-HOWTO(Linux IP
  Masquerade mini HOWTO <http://sunsite.unc.edu/mdw/HOWTO/mini/IP-
  Masquerade> 

  ְΥޥ PPP ȤäƥץХͳǥ󥿡ͥåȤ³
  פȤۤȤɤΰ̥桼ˤȤäƤϡIP ֹ(Τˤϥͥå
  ֹ)˳ꤢƤƤ餦ɬפϤޤ

  Ϥ LAN 򥤥󥿡ͥåȤ³硢¿Υ󥿡ͥå
  ³ӥץХ(ISP)餫ѰդƤ IP ֹ椫
  ѤΥ֥ͥå(IP ֹ)Ƥ륵ӥѰդƤ
  

   PC  ISP ͳǥ󥿡ͥåȤ³桼Фơۤ
  ɤ ISP ưŪ IP ֹγƤԤʤäƤޤʤ³
  ݤ ISP 顢³κݤˤΤͭ IP ֹ򤢤ʤ PPP 
  ե˳Ƥ롢ȤȤߤǤ

  ưŪ IP ֹγƵǽξ硢Ƥ IP ֹ³뤿
  Ӥ˰ۤʤޤξ硢ХפΥץꥱ󡢤ʤ
  sendmail  ftpdhttpd ʤɤϤޤȤޤưŪ IP ֹγ
  Ƥˤ¤ˤĤ(ȲǽϰϤǤ¤򤯤̤ˡˤĤ
  )ϸҤޤ

  3.  ʸŪ

  3.1.  PPP 饤Ȥꤹ

  ʸǤ Linux  PPP Ȥä PPP Ф³PPP Ȥä IP
  ³ĥꤿ͸˲򤷤ޤʲǤϥͥκƹۻ PPP
  ɥ饤Фѥ뤵졢ʤ Linux ޥ PPP ɥ饤Ф
  ȡ뤵ƤΤȤޤ(PPP ɥ饤ФȤΥͥ
  /ѥˡˤĤƤñޤ)

  3.1.1.  DIP ϻȤ鷺 CHAT Ȥ

  DIP(SLIP ³ĥ뤿δŪˡǤ)Ȥä PPP ³򤹤뤳
  ǽǤDIP ץȤϳƤʣʤΤǡʸ
   DIP Ȥä PPP ³ĥˡˤĤƤޤ

  ꡢʸǤ Linux PPP ѤƤŪ chat/pppd 
  ˡޤ

  3.2.  PPP Ф

  ʸϤʤ Linux ޥ PPP (¾οͤʤ Linux 
  ä򤫤Ƥ PPP ³ĥ뤳ȤĤ)Ȥꤹ
  ˡˤĤƤޤ

  Linux ޥ PPP ФȤꤹˡϲ̤⤢ޤʸ
  Ǥ(ΤȤ)ΤΰĤˡΤߤޤˡ
  ʣξϤ PPP Фꤹ뤿˻ȤäΤǤ(줾 16
  ΥǥĤʤޤ)

  ˡϤޤԤϤǤɬˡǤϤޤ󡣤⤷
  ïäȴñƤ PPP Фˡ¸ΤǤ顢Ҥʸ
  Ԥ e-mail ǶƤ

  3.3.  2 Ĥ LAN뤤 LAN ȥ󥿡ͥåȤ PPP ³ˡ

  ʸǤ PPP Ȥä 2 Ĥ LAN ³ꡢLAN 򥤥󥿡ͥ
  Ȥ³ˡˤĤơŪʾ󶡤ޤ

  3.4.  ʸ񤬰ʤꡢ

  o  ǥ Linux ޥ³ꤹˡ(ξܺ)
     Serial-HOWTO

  o  DIP Ȥä PPP ³ĥˡ
      chat Ȥޤ

  o  socks  IP masquerade λȤ
     ˤĤƤϤȤƤ褤ʸ񤬴ѰդƤޤ

  4.  ʸǰեȥΥС

   HOWTO Ǥ Linux 1.2.x  PPP 2.1.2 Ȥ߹碌뤤 Linux
  1.3.x/2.0  PPP 2.2 Ȥ߹碌ˤƤޤ

  PPP 2.2.0  1.2.13 ͥȤ߹碌뤳ȤǽǤΤ
  ϥͥ˥ѥå򤢤ƤɬפޤʸϤΤ褦Ȥ߹
  ˤĤƤޤ

  ޤLinux 2.0.X ꡼Υͥ PPP 2.1.2 ȤȤϤǤʤ
  ȤդƤ

  ʸ 2.0.x οǽǤ¹Իɲǽ⥸塼˴ؤ
  ˤĤƤޤ󡣾ܺ٤ˤĤƤ kerneld mini-HOWTO  2.0.x 
  °Υͥ⥸塼˴ؤʸɤǤ(Linux 2.0.x Υ
  ĥ꡼Ǥ /usr/src/linux/Documentation/..ʲΥǥ쥯ȥ˴Ϣ
  ʸ񤬤ޤȤƤޤ)

  ʸϿ桼뤳Ȥտޤƽ񤤤ƤޤΤǡꤷ
  뤳Ȥ褯ΤƤŬڤʥС Linux  PPP ȤȤ
  ᤷޤ

  5.  ¾ͭ/פʸ

  ʲʸˤܤ̤뤳Ȥ򤪴ᤷޤ

  o  PPP °Υɥ
     (/usr/doc.. ʲΥǥ쥯ȥ󤯤)

  o  pppd  chat Υޥ˥奢ڡ
     (man chatman pppd ɽޤ)

  o  Linux Network Administration Guide (NAG)
     on line ǤThe Network Administrators' Guide
     <http://sunsite.unc.edu/mdw/LDP-books/nag-1.0/nag.html>Ǥ
     ޤ

  o  NET-2/3 HOWTO
     Linux NET-2/3-HOWTO
     <http://sunsite.unc.edu/mdw/HOWTO/NET-2-HOWTO.html>

  o  /usr/src/linux/Documentation ʲˤ륫ͥ˴ؤʸ

  o  O'Reilly ǤƤ Unix/Linux ˴ؤͥ줿ҡ (
     Υ < http://www.ora.com/>)⤢ޤUnix/Linux ˤĤ
     ƽ鿴ԤʤС᤯νŹޤäƤä(⤤Ƥϥ)
     ꤷƤ

  Linux ʸˤĤƤϡThe Linux Documentation Project Home Page
  <http://sunsite.unc.edu/mdw/>ΤǤ礦[ܸ
  줿ʸJF <http://jf.gee.kyoto-u.ac.jp/JF/>éޤ]

  ʸǤ PPP ³ȤȤϲǽʤϤǤ嵭ʸ
  ̤мºݤǲԤʤƤ뤫ܤ򤹤뤳ȤǤ
  ޤˤʤäƤ뤫ΤΤˤΩĤǤ礦(ʤȤ
  comp.os.linux... ʲΥ˥塼롼פǤäȸǤϤ
  )

  嵭ʸǤ(Ϣ RFC ʤɤޤ) HOWTO ǤԲǽʡܤ
  󤬾Ҳ𤵤졢ܺ٤ʲ⤬ʤƤޤ

  PPP Ȥä LAN 򥤥󥿡ͥåȤ³硢TCP/IP ͥåȥ
  ĤƤμɬפˤʤޤ嵭ʸ¾ˡO'Reilly  "TCP/IP
  Network Administration" "Building Internet Firewalls"ΩĤ
  礦

  5.1.  ͭѤ Linux ϢΥ᡼󥰥ꥹ

  Linux ˴ؤ򴹤ΤΥ᡼󥰥ꥹȤϤޤޤΥ٥Τ
  ޤˤ϶̣졢ɤзиޤ뤳
  ȤǤ礦

  ԤؤΰĤΥ᡼󥰥ꥹȤϾԸ
  ʤäƤޤΥ᡼󥰥ꥹȤäƤ⡢ROM Ƥ뤦ï
  ʸޤ󤬡Ŭڤʥ᡼󥰥ꥹȤˡֽ鿴ԤΡ׼򤹤
  ȡʤ긷(ե졼ˤϻʤƤ)뤳ȤǤ
  ȤäƤ guru level Υ桼ֽ鿴ԤΡ׼äƤ櫓
  ϤʤΥ᡼󥰥ꥹȤŪΥ٥ʾ
  ͤδ֤ǵ뤿ΤΤǤ

  ȤˤƤ᡼󥰥ꥹȤäƤߤޤ礦Ǥ⡢Υ
  󥰥ꥹȤΥơޤ˺ʤ

  Linux Υ᡼󥰥ꥹȤˤĤƤϡ Linux Mailing List Directory
  <http://summer.snu.ac.kr/~djshin/linux/mail-list/index.shtml>˾ܤ
  Ҳ𤵤Ƥޤ

  6.  Linux ͥ

  PPP Ȥˤ Linux ͥ PPP ǽȤߤޤʤФʤޤ
  󡣤ޤͥΥɤꤷƤʤСɤ
   Linux ɸŪʥɤΥǥ쥯ȥǤ /usr/src/linux
  ֤ޤ礦

  ¿Υǥȥӥ塼󤬡ưŪ/usr/src/linuxǥ쥯ȥ˥
  ĥ꡼(ե䥵֥ǥ쥯ȥ)򥤥󥹥ȡ뤹Τǡޤ
  ǥ쥯ȥåƥɤ󥹥ȡ뤵Ƥʤ
  åޤ礦

  Linux Υͥ륽 sunsite.unc.edu 䤽Υߥ顼Ȥꤹ
  뤳ȤǽǤ

  7.  Linux ͥ륽Υ󥹥ȡ

  ʲLinux ͥΥɤꤷƥ󥹥ȡ뤹뤿μ
  ñ˼ޤܺ٤ʼThe Linux Kernel HOWTO
  <http://sunsite.unc.edu/mdw/HOWTO/Kernel-HOWTO.html>򤴤󤯤

  Linuxͥ򥤥󥹥ȡ뤷ƥѥ뤹ˤϥ롼ȸ¤ɬפ
  

  1. /usr/src ǥ쥯ȥذư
     cd /usr/src

  2. /usr/src/linux ʲ˥󥹥ȡ뤵Ƥʤǧ

  3. ɤ̵Linux kernel source directory
     <ftp://sunsite.unc.edu/pub/Linux/kernel/v2.0>ꤷޤ

     [Ǥ˭Ѳʳ
     <ftp://ftp.tut.ac.jp/pub/Linux/kernel/v2.0>ǿΥͥ뤬
     Ǥޤ]

     (1.2.X ʤɤ)ŤͥõƤ硢Ťͥ륢
     <ftp://sunsite.unc.edu/pub/Linux/kernel/old>õƤ

  4. Ŭʥͥ - ̾2.0.x꡼κǿΥͥӤ
     礦ɤtar ե /usr/src ֤ޤ
     աLinux Υͥ륽ˤ¿Υե뤬ޤޤʥǥ쥯
     ȥ˳ǼƤΤǡ'tar' եϤʣΥե
     Ȥ᤿եˤʤäƤꡢ̾ﰵ̤(ĥ .gz)ޤtar
     եϤ礦 DOS  zip եΤ褦ʤΤǤ

  5. Ǥ˥ɤ󥹥ȡ뤵ƤƿΤ˹
     硢ޤŤɤƤʲΥޥɤ¹Ԥ
     ޤ

     rm -rf /usr/src/linux

  6. ˰ʲΥޥɤǥɤŸޤ
     tar xzf linux-2.0.6.tar.gz

  7.  cd /usr/src/linux README եɤǤ
     եˤϤɤΤ褦˥ͥεǽꤷƥѥ뤹뤫
     ⤵ƤޤΤǡޤΥեɤळȤ򤪴ᤷ
     (ץȥȤƼ긵֤ƤΤ⤤Ǥ礦ͥ
     ѥ뤹ݤˤϤʤ֤Τǡδ֤ README 򤸤ä
     ɤǤߤޤ礦)

  8.  ϡɥˤĤ

  ͥƥѥ뤹뤿ˤϡʤ PC ȤߤޤƤ륫
  ɤǥХˤĤΤäƤɬפޤĤΥǥХ(㤨
  Хɥ)ǤϤܤ(IRQ  I/O ɥ쥹ʤ)ΤäƤ
  ɬפ⤢ޤ

  9.  ͥΥѥ - Linux 1.2.13 ξ

  ץϤݤˤϡ󥹥ȡԤ README ե
  λؼ˽äƤͥ

        make config

  ǻϤޤ

  PPP Ȥˤ PPP ǽ򥫡ͥȤߤ褦ꤷޤ(PPP 
  pppd ȥͥȤߤޤ줿 PPP ɥ饤ФɬפǤ)

  ______________________________________________________________________
    PPP (point-to-point) support (CONFIG_PPP) [n] y
  ______________________________________________________________________

  ¾ϡʤ PC Ȥߤޤ줿ϡɥȤ Linux
  εǽ˹礻򤷤ƤˡREADME ˽äƥѥ뤷
  ͥ򥤥󥹥ȡ뤷ޤ

  1.2.13 ͥǤ 4 Ĥ PPP ǥХޤ󡣥ޥݡȥ
  ꥢ륫ɤȤ硢ͥ PPP ɥ饤ФΥơ
  ¿ΥݡȤȤ褦ˤƤ(ɬפʽξܺ٤ˤĤƤ
  PPP-2.1.2 ° README.linux Ƥޤ)

  ա1.2.13  make config ϸˤޤ󡣤Ǥ顢ְ㤨
   CTRL C 򲡤ƽλٻϤᤫꤷƤ

  9.1.  ͥΥѥ - Linux 1.3.x  2.0.x ξ

  2.0.x Ǥ 1.2.13 Ʊͤμˤʤޤξ⡢
  󥹥ȡ뤹ˤ README եλؼ˽äƤͥ
  

        make config

  ǻϤޤ

  2.0.x Ǥ

        make menuconfig

  Ȥޤ

  make menuconfig ϥ˥塼١ꥷƥǡ饤إפ
  դ졢ʤȤꤹ뤳ȤǽǤ

  X ɥ١ꥷƥǤ

        make xconfig

  ȤȤǽǤ

  PPP ǽľܥͥȤߤळȤǤޤ¹Իɥ⥸塼
  Ȥƥѥ뤹뤳ȤǽǤPPP ȤΤϤ¤줿֤
  Ȥ PPP ǽϥ⥸塼Ȥƥѥ뤷
  礦'kerneld' Ȥ PPP ³򳫻Ϥ褦Ȥݤ˼ưŪ PPP
  ³ɬפʥ⥸塼ȤߤळȤǤޤƤХ
  ֤ǤޤͥΤ꤫饹åץȤ뤳ȤϤ
  ޤ󤬡'kerneld' Ȥߤ¹Իɥ⥸塼ϡɬפ̵
  мưŪ˼Ϥޤ

  kerneld ȤˤϡưŪɥ⥸塼Ѳǽˤޤ

  ______________________________________________________________________
          Enable loadable module support (CONFIG_MODULES) [Y/n/?] y
  ______________________________________________________________________

  PPP ǽ򥫡ͥȤߤ硢ʲ򤷤ޤ

  ______________________________________________________________________
          PPP (point-to-point) support (CONFIG_PPP) [M/n/y/?]
  ______________________________________________________________________

  PPP ⥸塼ˤMޤͥȤߤߤ
  YƤ

  1.2.13 Ȥϰۤʤꡢ2.0.x ΥͥǤ PPP ǥХɬפ˱ưŪ
  ˺ΤǡPPP ǥХ¿˴ؤ뽤ԤɬפϤޤ
  

  9.2.  PPP-2.2  /proc/net/dev ˤĤ

  PPP-2.2 ȤäƤ硢ǥХưŪ˺뵡ǽѤȤ
  ơ pppd ưޤǤ /proc/net 򸫤Ƥ PPP ǥХϸĤ
  

  ______________________________________________________________________
  [hartr@archenland hartr]$ cat /proc/net/dev
  Inter-|   Receive                  |  Transmit
   face |packets errs drop fifo frame|packets errs drop fifo colls carrier
      lo:  92792    0    0    0    0    92792    0    0    0     0    0
    eth0: 621737   13   13    0   23   501621    0    0    0  1309    0
  ______________________________________________________________________

  ʤ顢ä PPP ӥ򳫻ϤСɬפʥǥХϰʲ
  Τ褦˸褦ˤʤޤ(αѤƤ ppp ФǤ)

  ______________________________________________________________________
  [root@kepler contrib]# cat /proc/net/dev
  Inter-|   Receive                  |  Transmit
   face |packets errs drop fifo frame|packets errs drop fifo colls carrier
      lo: 428021    0    0    0    0   428021    0    0    0     0    0
    eth0:4788257  648  648  319  650  1423836    0    0    0  4623    5
    ppp0:   2103    3    3    0    0     2017    0    0    0     0    0
    ppp1:  10008    0    0    0    0     8782    0    0    0     0    0
    ppp2:    305    0    0    0    0      297    0    0    0     0    0
    ppp3:   6720    7    7    0    0     7498    0    0    0     0    0
    ppp4: 118231  725  725    0    0   117791    0    0    0     0    0
    ppp5:  38915    5    5    0    0    28309    0    0    0     0    0
  ______________________________________________________________________

  9.3.  ͥΤ¾ˤĤ

  ʤ Linux ޥ PPP ФȤꤹ硢IP ե
  ǽȤߤǤɬפޤIP եɵǽϡʣ LAN
  ³ LAN 򥤥󥿡ͥåȤ³ɬפǤ

  LAN 򥤥󥿡ͥåȤ³(뤤 2 Ĥ LAN ³
  )ƥˤĤդʤФʤޤ󡣥ͥ IP ե
  εǽȤߤळȤɬܤǤ

  ˽Ҥ٤褦ˡĤͥåȥѤ IP ֹȤäƤͥåȥ
  򥤥󥿡ͥåȤ³硢IP masquerade εǽɬפˤʤ
  

  ѥ뤷ͥ򥤥󥹥ȡ뤷ƺƵưСPPP ³
  ƥȤǽˤʤޤ

  10.  PPP ³򤹤뤿ɬפʾ

  Ф PPP ³ݤˤϰʲξɬפˤʤޤ(PPP ФΥ
  ƥԤ ISP Υ桼ݡ䤤碌Ƥ)

  o  PPP ӥäƤֹ
     Ҥʤɤι³硢³뤿ֹ
     ɬפǤϤƤ 0  9 ˤʤäƤǤ礦

  o  ФưŪ IP ֹγƤԤʤäƤ뤫餫
      IP ֹȤäƤ뤫

     PPP ³ˤ餫ޤä IP ɥ쥹Ȥ褦ˤʤäƤ
     硢 PPP ³κݤ˻Ȥ IP ֹɬפˤʤޤ

     ۤȤɤ ISP ǤưŪʳƤԤʤäƤϤǤҤΤ褦
     ˡưŪʳƤξ硢ѲǽʥӥˤĤ¤
     ޤ

  o  餫ޤä IP ֹȤ硢ͥåȥޥɬפˤ
     Τ ISP 䤤碌ƤƤ

  o  ISP Υ͡ॵ(Domain Name Servers)IP ֹϡ
     ͡ॵФΥɥ쥹 1 ĤɬפǤ

  o  Ф PAP/CHAP ǧڤȤäƤޤ

     Τ褦ʾ硢³ˤǧڤɬפ ID 丰(secret)ɬפȤʤ
      (̾ϤʤΥ桼̾ȥѥɤȤޤ)

  o  ³ХФưŪ PPP ³򳫻ϤΤö login 
      PPP ư뤿ΥޥɤɬפˤʤΤ
     PPP ư뤿ΥޥɤɬפʤСΥޥ̾ϡ

  ξ򤭤ȥ⤷Ƥ˿ʤߤޤ礦

  10.1.  ǥͳؤ³ƥ

  ǥबꤵƤꡢɤΥꥢݡȤˤĤʤäƤ뤫
  ǧƤ

  ƤʲΤ褦ˤʤޤ

  o  DOS com1: = Linux /dev/cua0 ( /dev/ttyS0)

  o  DOS com2: = Linux /dev/cua1 ( /dev/ttyS1)
     

  ١̿ե(minicom Τ褦)ȤäơPPP Фֹ
  Ǥ뤫ǧƤߤޤ礦

  (աʳǤϤޤ PPP ³ƤϤޤ - ֹ椬
  PPP ³Ϥ뤿˥Ф³ˤɤΤ褦ʥå
  Ƥ뤫ΤΤ뤳ȤפǤ)

  ʳǤϡ̿եȤΥǽȤä³ե
  տ(տ)ФɤΤ褦ʥץץȤƤ
  ơɤʳǥ桼̾ȥѥɤϤʤФʤ(PPP 
  ³Ԥʤɬפʥޥɤ)Τ˽񤭼̤Ƥ

  ʤȤ 2 ä򤫤ƤǤ礦ФˤäƤ
  ³κݤ˥ץץȤѤ(㤨л֤ɽʤ)ޤ
  ʤ Linux ޥΤäƤʤФʤʤ 2 Ĥνפʥץ
  ץȤ

  o  桼̾뤿Υץץ;

  o  ѥɤ뤿Υץץ;

   2 ĤǤ

  Ф PPP ư뤿˲餫Υޥɤɬפʾ硢³Ƥ
  餽Υޥɤ¹ԤݤΥץץȤΤäƤͤФʤޤ

  ³ΥФưŪ PPP ³򳫻Ϥ硢ֹ˥
  󤹤Ȳ̤˰̣ʸɽϤǤ PPP 
  ФʤΥޥ PPP ³򳫻ϤƳƼ³ԤäƤ
  Ǥ

  ʸϰʲΤ褦ʷˤʤäƤޤ

        ~y}#.!}!}!} }8}!}$}%U}"}&} } } } }%}& ...}'}"}(}"} .~~y}

  (Ƥä³ޤ)

  ʳǥǥ³ڤޤ礦(̾+++ ᤯ϤATHO 
  ޥɤСǥϲǤ OK ֤ϤǤ)

  ĤΥƥǤϥФ˥󤷤Ƥ PPP Ū˵ư
  ɬפޤ̾ PPP Ǥ̾ΥĶǤƱ桼̾ȥѥ
  ɤ³Ǥ褦ˤʤäƤˤΤ褦꤬ƤϤ
  ǤΤ褦ʾ硢ö󤷤Ƥɬפʥޥɤ¹ԤƤߤ
  ȡФäƤ̣ PPP ³ưΤʸ
  ̤ɽϤǤǧǤޤ礦

  Ф PPP ³򳫻ϤƤ⡢̤ˤμʸɽʤ
  硢¿ʬ(ФǤϤޤ)ʤְäƤϤǤ

  ⤷ȡ³ PPP Фѥå֥⡼()ꤵƤ
  ΤΤޤ󡣥ѥå֥⡼ɤꤵƤ륵Фϥ饤
  (ʤΥԥ塼)¦ PPP ³򳫻ϤʤȲȿ֤
  
  ʤ顢ۤȤɤΥФϥƥ֥⡼()ꤵƤ
  ꡢ³а̣ʸɽϤǤ

  ǥबưʤ硢ޤǥ°Υޥ˥奢ɤߤޤ
  ˡȤäƤ̿եȤΥޥ˥奢 Serial HOWTO ܤ̤
  θ塢嵭βٻƤߤƤ

  11.  ꥢݡȤȤΥԡɤˤĤƤΥ

  ®(դ)ǥ(14,400 Baud ʾ)ȤäƤ硢ꥢݡ
  ǥʾž®٤ǥǡȤꤹɬפޤä˥ǥ
  ǡ̵ǽȤäƤ硢ꥢݡȤ®٤׵ᤵޤ

  ΤΥꥢݡȤˤϡ16550(A) Ȥä UART(Universal
  Asynchronous Reveiver Transmitter)ȤɬפޤŤޥ(
  뤤ϸŤꥢ륫)ȤäƤ硢UART  8250 ˤʤäƤ뤳
  Ȥ¿ϤǤ8250 UART ǤϹ®ʥǥȤȤ
  Ȥˤʤޤ

  ǧˤ

        setserial -a /dev/ttySx

  ƤߤƤ

  ȡȤäƤ UART μबɽޤ16550A פ UART
  ȤäƤʤ硢ꥢ륫ɤǤ礦
  ($50 ʲǤϤǤ)

  աС 16550 UART åפˤϥХޤ
  ȯ졢Ǥ 16550A UART åפ꡼ޤ
  ΤåפǤԾ˽ФޤäƤ褦Ǥ¿ʬ
  åפ뤳Ȥ̵ȻפޤäǯΤΥꥢ륫ɤ
  硢setserial  16550A ȤäƤ뤳Ȥ򼨤ǧƤ

  12.  ǥ

  PPP ǥȤ褦ꤹɬפޤΤˤ 
  °Υޥ˥奢ɤǤۤȤɤΥǥϹвٻ
   ΤޤޤǤ PPP ȤϤǤǾɬפϡ

  o  ϡɥեȥ(RTS/CTS) (Hayes ϤΥޥɤѤ
     Ƥ¿ΥǥǤ &K3Ǥ)

  Ǥ

  ¾å(ɸŪ Hayes ޥɤǼޤ)

  o  E1 ޥɤ Echo  ON (chat ɬ)

  o  Q0 ޥɤǥꥶȥɤ֤褦(chat ɬ)

  o  S0=0 Ǽư OFF (ǥबä)

  o  &C1 ³˥ꥢǥƥȤ ON ˤʤ褦

  o  &S0  DSR  ON ˤʤ褦

  o  (ˤäư㤤ޤ) DTR  ON ˤʤ褦

  ԥ塼ȥǥ³ʬΥǥΥꥢ륤󥿡ե
  ɤʤäƤ뤫åƤΤͭפǤƤοǥ
  Ǥϥꥢ륤󥿡ե®٤ϸˤʤäƤꡢòž®
  ٤ϲξ֤ˤäƼưŪ³ǽʺǹ®ˤ֤褦ˤʤäƤ
  ϤǤ

  ˡ split speed operation ȸƤФ졢ȤΥǥबεǽ
  äƤ硢ǥΥꥢ륤󥿡եϺǹ®٤˸ꤷƻ
  ΤǤ礦(̾ 115,200 baud Ǥ14,400 baud ǥǤ
  38,400 ޤǤξ礬ޤ)

  ̿ե(㤨 minicom)ȤäơǥǧPPP ɬפ
  ԤʤäƤ¿Υǥब AT&V Ǹߤ֤֤褦
  ˤʤäƤޤΤʤȤϥǥΥޥ˥奢򻲾ȤƤ
  ꤬㥴ˤʤäƤޤä硢Ƥ AT&F ǹвٻ
  ޤ(䤬ǥǤϹвٻΤޤޤ PPP 
  ȤޤåƤߤ뤳Ȥ򤪴ᤷޤ)

  Դȯ RAM ¸ޤ(̾AT &W ¸ޤ
  ٤ϥǥΥޥ˥奢)

  ¸ƤСǥꥻåȤФ꤬Ѥ
  褦ˤʤޤƤ PPP ³ĥݤ chat ץȤ
  äȴñˤʤǤ礦

  12.1.  ꥢݡȤΥեˤĤ

  ǡꥢ̲᤹ݡԥ塼ν®٤®ǡ
  Ϥ礬ޤ(ԥ塼̤νŤŻ򤷤Ƥʤɡ
  Linux ϥޥ桼ޥ OS Ǥ)Τ褦ʾǤǡ
  򼺤ʤ(ϥХåեǡʤ̵ʤޤ)褦
  ˤϥǡΥե椬ɬפˤʤޤ

  ꥢΥեˤ 2 Ĥˡޤ

  o  ϡɥե(ǡžκݤ Send/Request 򥯥ꥢ -
     CTS/RTS)

  o  եȥե(control S  control Q Ȥ)

  ̾ΥƥɽѤΥߥʥʤиԤˡǤ⹽ޤ󤬡PPP
  ³ξήǡ 8 ӥåƤȤäƤΤ cntl-S  cntl-Q
  ǡΤɤ˸ǽϤʤ⤯ʤޤǤ顢ǥ
  եȥեȤäƤ硢Բǽˤʤޤ

  8 ӥåƤȤ PPP ³Ǥϥϡɥե椬ɬܤǤ

  13.  PPP ȥ롼ȸ

  PPP ǤϥͥΥ롼ƥ󥰥ơ֥ѹȤäͥåȥǥХ
  ꤹɬפ뤿ᡢ롼ȸ¤ɬפˤʤޤ

  롼ȰʳΥ桼 PPP ³ꤹ硢pppd ץϥ롼Ȥ
  setuid Ƥɬפޤ

        -r-sr-xr-x   1 root     root        95225 Jul 11 00:27 /usr/sbin/pppd

  /usr/sbin/pppd Τ褦ˤʤäƤʤ硢롼Ȥˤʤä

        chmod u+s /usr/sbin/pppd

  Ȥޤ

  ƤС롼Ȱʳΰ̥桼 pppd ΥХʥ¹ԤƤ⡢
  pppd ϥ롼ȸ¤ư褦ˤˤʤꡢ̥桼Ǥͥåȥ
  ե䥫ͥΥ롼ƥ󥰥ơ֥ꤹ뤿ɬפʸ¤
  pppd ¹Ԥ뤳Ȥǽˤʤޤ

  롼Ȥ setuid 줿ץŪʥƥۡˤʤ꤬
  ʤΤǡ롼Ȥ setuid äդƤpppd ޤ᤿
  롼Ȥ setuid 뤳ȤɬܤΥץϥƥˤϽʬդ
  ʧäƽ񤫤ƤΤǡpppd Ȥ硢setuid Ϥޤפ
  礦(ݾڤϤޤ)

  ïǤ PPP ³򳫻ϤǤ褦ˤ뤫ݤȤäƥλȤ
  碌ơppp-on/off ץȤɤ߽Ф¹Ԥε°ꤷƤ
  ʤͤ PC Ȥʤ硢a+rx ǤǤ礦

  PPP ³򳫻ϤǤͤ¤(㤨СʤλҶ
  ʤ Linux ޥ˥ȤäƤ뤱ɡˤϥ󥿡
  ͥåȤ³ʤ)PPP ³ѤΥ롼פä(/etc/group
  )

  o  ppp-on/off ץȤ롼Ȥ PPP 롼פνͭˤ

  o  ppp-on/off ץȤɤ߽ФĤȼ¹ԵĤ PPP 롼פˤΤ
     Ϳޤ

          -rwxr-x---   1 root     PPP           587 Mar 14  1995 /usr/sbin/ppp-on
          -rwxr-x---   1 root     PPP           631 Mar 14  1995 /usr/sbin/ppp-off

  o  ʳε°Ƥޤ

  o  PPP ¹ԤǤ桼Τߤ /etc/group  PPP 롼פ
     Ͽޤ

  Τ褦ꤷƤ⡢̥桼ϥեȥŪˤ PPP ³ڤ
  ppp-off ץȤˤϥ롼ȸ¤ɬפǤʤ顢ǥ
  ŸïǤڤޤ

  䤬ȤǻȤäƤޥǤ pppd  root  setuid Ƥޤ PPP
  򳫻Ϥ뤿ˡΤäƤѥɤȤäƥ롼ȤˤʤäƼ
  ԤƤޤƤ©Ҥ󥿡ͥåȤ˾³뤳
  ȤϤǤޤ

  14.  PPP ³ե

  PPP ïǤȤ褦ꤷƤǤ⡢ϥ롼Ȥ
  login ƤPPP ³ɬפʥǥ쥯ȥꡢե
  ޤ

  PPP  ppp ³ꤹ뤿ˤĤեѤޤ
  Υեξ̾ PPP 2.1.2  2.2 Τ¿ۤʤäƤޤ

  PPP 2.1.2 ξ硢ɬפʥե

  ______________________________________________________________________
  /usr/sbin/pppd          # pppd ΥХʥ
  /usr/sbin/ppp-on        # /³ѥץ
  /usr/sbin/ppp-off       # ³λѥץ
  /etc/ppp/options        # pppd Ƥ³κݤ˻Ȥץ
  /etc/ppp/options.ttyXX  # ݡȤȤ˻Ȥץ
  ______________________________________________________________________

  Ǥ

  PPP 2.2 ξ硢

  ______________________________________________________________________
  /usr/sbin/pppd                          # pppd ΥХʥ
  /etc/ppp/scripts/ppp-on             # /³ѥץ
  /etc/ppp/scripts/ppp-on-dialer  # ºݤ chat ץ
  /etc/ppp/scripts/ppp-off            # ³λѥץ
  /etc/ppp/options                # pppd Ƥ³κݤ˻Ȥץ
  /etc/ppp/options.ttyXX  # ݡȤȤ˻Ȥץ
  ______________________________________________________________________

  ˤʤäƤޤ

  Τ褦ˡ/etc ǥ쥯ȥ ppp ѤΥǥ쥯ȥ꤬ޤ

        drwxrwxr-x   2 root     root         1024 Oct  9 11:01 ppp

  ⤷Υǥ쥯ȥ̵꤬кäƤ

  Υǥ쥯ȥ꤬¸ߤƤСoptions.tpl ȸƤФ륪ץ
  եΥҥʷե뤬ϤǤΥեޤǤ
  ʤǥȥӥ塼¿褦ʤΤǡΥեϤʸ
  ޤƤޤ

  Υեˤ PPP ƥץ񤫤ƤΤǡǤ
  Ƥޤ礦(pppd Υޥ˥奢礻ɤФͭפǤ)
  ե /etc/ppp/options եθȤƻȤȤǤޤ¿
  ʬȥȤƤʬե
  Ǥ礦äûʤäơɤߤ䤹ƥʥ󥹤⤷
  䤹ʤޤ

  ʣΥꥢǥȤ(PPP Фˤ褯)Τ
  եǤ /etc/ppp/oprions ˤƤä륷ꥢݡ
  ȤɬפʥץꤷޤPPP ³Τ˸̤ɬפʥ
  ꥢˤӸѤΥե뤬ޤ

  ѤΥե options.ttyx1  options.ttyx2 Ȥä̾Τ
  ʤäƤޤ(x ϤȤΥꥢݡȤ̾ΤǤ)

  PPP ³ĤȤʤ硢Ƥ /etc/ppp/options ե
  Ƥ⹽ޤ󡣤ޤƤΥץ pppd ưݤΥץ
  Ȥƻꤹ뤳ȤǽǤ

   /etc/ppp/options.ttySx ˻ꤹñǤPPP ʣ
  ۤʤ륵Ȥ³硢ȤȤե
  /etc/ppp/options.site Ѱդ³κݤɬפʥѥ᡼ե
  ˻ꤹ뤳ȤǽǤ

  14.1.  options.tbl ե

  PPP Υǥȥӥ塼ˤäƤ options.tpl ե뤬̵
  ⤢ޤΤǡʲ˴ʥեդƤޤΥեľ
  ܽ /etc/ppp/options եʤɤ餺ե˥
  Ƥ齤뤳Ȥ򤪴ᤷޤƤ꤬󤬤餬
  Ƥ⥪ꥸʥΥեäƺƽȯǤޤ

  ______________________________________________________________________
  # /etc/ppp/options -*- sh -*- general options for pppd
  # created 13-Jul-1995 jmk
  # autodate: 01-Aug-1995
  # autotime: 19:45

  # ¹Բǽʥץफ륹ץȤȤäƥꥢꤷޤ
  # ΥץȤǤ "chat" Ȥäƥǥफ뤷³ PPP
  # åưƤޤ
  #
  #connect "echo You need to install a connect command."

  # pppd ³ڤä˼¹Ԥץफ륹ץȤꤷ
  # 㤨Сǥबϡɥ濮ǲǤʤʤɤˡ
  # ³뤿Υޥɤ¹Ԥ뤳ȤǤޤ
  #
  #disconnect "chat -- \d+++\d\c OK ath0 OK"

  # 32-bit hex Ǥ async 饯ޥåפλꡣ32 ӥåȤγƥӥåȤ
  # pppd κݤˤΥ饯򥨥פ뤫ɤꤷޤ
  # 0x00000001  \x01, 0x800000000  \x1f 򼨤ޤ
  #asyncmap 0

  # ͥåȥѤΥѥåȤȤꤹ³ǧڤޤ
  #
  #auth

  # ꥢݡȤΥե˥ϡɥեȤޤ
  #
  #crtscts

  # XON/XOFF ȤäեȥեȤޤ
  #
  #xonxoff

  # IPCP Υͥ󤬤ޤä硢³򥲡ȥˤ
  # 褦ʷϩ(default route)򥷥ƥηϩɽ˲äޤη
  # ϩ PPP ³λʳǺޤ
  #
  #defaultroute

  # Υ饯򥨥פޤ(³褬Υ饯
  # async control character map ǻꤷƤ뤫ݤˤ餺)
  # פ륭饯ϥޤǶڤä 16 ɽǻꤷޤasyncmap 
  # ץǤϥȥ륳ɤפǤʤΤФ escape 
  # ץǤϤ륭饯פǤ뤳ȤդƤ
  # פǤʤΤʤ饯 0x20 -0x3f  0x5e Ǥ
  #
  #escape 11,13,ff

  # ǥȤޤ
  #
  #local

  # pppd  UUCP Υåեäơ¾Υץबꥢ
  # ǥХ򥢥ʤ褦ˤޤ
  #
  #lock

  # ǥޤUltrix ǤϤΥץ crtscts ץ
  # Ʊϡɥեޤߤޤ(Υץϴ˼
  # Ƥ櫓ǤϤޤ)
  #
  #modem

  # ³MRU[Maximum Receive Unit]ͤ <n> ˤ褦̤ޤ
  # λˤ³ <n> ХȰʲΥѥåȤʤ褦˻ꤷ
  # ޤMRU κǾͤ 128 ǡǥեͤ 1500 Ǥ٤Ǥ
  # 296 侩ޤ(TCP/IP Υإå 40 Х + ǡ 256 Х)
  #
  #mru 542

  # 󥿡եΥͥåȥޥ <n> ˻ꤷޤ 32 ӥåȤ
  # ɥåȤǶڤä 10 ɽǤ(㡧255.255.255.0)
  #
  #netmask 255.255.255.0

  # ʬ¦ IP ɥ쥹ꤷʤä硢ǥեȤǤϥۥ̾
  # IP ɥ쥹ꤷޤΥץꤹмʬ¦ IP 
  # ɥ쥹ꤻ³褫 IPCP ΥͥκݤƤ
  # IP ɥ쥹 IP ɥ쥹ˤޤ(ޥɥ饤䥪ץ
  # եŪ˥ IP ɥ쥹ꤹ뤳ȤǽǤ)
  #
  #noipdefault

  # LCP  "passive" ץǽˤޤΥץꤹ
  # Сpppd ϼưŪ³򳫻Ϥ褦ȤޤΥץꤷ
  # ³褫ʤä pppd ϽλޤΥץ
  # ꤹмưŪͭ LCP ѥåȤϤޤԤĤȤˤʤޤ
  #
  #passive

  # ΥץꤹС³褫 LCP ѥåȤϤޤ
  # pppd ³򳫻Ϥ뤿 LCP ѥåȤȯޤ(ŤС
  #  pppd  "passive" ץ󤬤ưꤷޤ)
  #
  #silent

  # LCP  IPCP ̤ΥץȤޤ(ǥեȤΤΤΤߤȤ
  # ޤ)
  #
  #-all

  # Address/Control ̤˴ؤͥ򤷤ޤ(ǥեȡ
  # ʤaddress/contro եɤϻȤʤˤʤޤ)
  #
  #-ac

  # asyncmap Υͥ򤷤ޤ(ǥեȤ asyncmap, ʤ
  # ƤΥȥ륭饯򥨥פˤʤޤ)
  #
  #-am

  # fork ƥХå饦ɥץˤʤޤ(Υץꤷ
  # ȡꥢǥХꤷƤ pppd ϥХå饦ɤޤ)
  #
  #-detach

  # IP ɥ쥹Υͥ򤷤ޤ(Υץꤹ硢
  # ³ IP ɥ쥹ϥޥɥ饤󤫥ץեǻꤷʤ
  # Фޤ)
  #
  #-ip

  # ޥåʥСΥͥ򤷤ޤ󡣤Υץꤹ
  # ȡpppd ϲ롼ץХå֤ˤʤäƤƤ⸡ФǤޤ
  #
  #-mn

  # MRU[Maximum Receive Unit]Υͥ򤷤ޤ(ǥեͤǤ
  #  1500 Ȥޤ)
  #
  #-mru

  # ץȥեɤ򰵽̤뤫ɤΥͥ򤷤ޤ(
  # եȤǤϥץȥեɤϰ̤ޤ)
  #
  #-pc

  # ³ PAP ǧڤȤ褦˻ꤷޤ
  #
  #+pap

  # PAP ǧڤȤȤƱդޤ
  #
  #-pap

  # ³ CHAP[Cryptographic Handshake Authentication Protocol]Ȥ
  # 褦׵ᤷޤ
  #
  #+chap

  # CHAP ȤȤƱդޤ
  #
  #-chap

  # Van Jacobson  IP إåΰ̤ˤĤƤΥͥ򤷤ޤ
  # (ǥեȤǤϰ̤ʤˤʤäƤޤ)
  #
  #-vj

  # ǥХå٥夲ޤ(-d Ʊ)Υץ󤬻ꤵȡpppd
  # ƤѥѥåȤƤʹ֤ɤǵϿޤ
  # ξϥե˥쥯Ȥꡢ/etc/syslog.conf Ūˤɤ
  # ե뤫ꤷޤ(ܺ٤ syslog.conf(5))(pppd ܺ٤
  # ǥХåǤ褦˥ѥꤵƤ硢 daemon
  # ǤϤʤ local2 εǽȤäƵϿޤ
  #
  #debug

  # ǧڤΤΥΥۥ̾ <d> Ȥɥᥤ̾ˤޤ
  # gethostname()  porsche Ȥۥ֤̾ºݤΥɥᥤ̾
  # porsche.Quotron.COM ξ硢Quotron.COM ꤹ뤿ˤΥץ
  # ꤷޤ
  #
  #domain <d>

  # ͥȤߤޤ줿 PPP ɥ饤ФΥǥХå٥ <n> ˤޤn
  # ϰʲͤ­碌̤ˤʤޤ1 ŪʥǥХåå
  # 2: ȤäѥåȤȤΤץȲǽʤΤϿ4: 
  # ѥåȤΤȤΥץȥȤǽʤΤϿ
  #
  #kdebug n

  # MTUͤ <n> ˤޤ³褫 MRU ͤȤƤ꾮ͤꤵ
  # ʤ¤ꡢͰʲΥѥåȤ PPP ͥåȥΥ󥿡ե
  # ʤ褦ͥΥͥåȥɤ˻ꤷޤ
  #
  #mtu <n>

  # ǧѤ˼ʬΥƥ̾ <n> ˤޤ
  #
  #name <n>

  # PAP ǧڤ³Ѥˡ긵ΥޥȤäƤ桼̾ <u>
  # ˤޤ
  #
  #user <u>
  # ǧѤ˥륷ƥ̾Τۥ̾ˤޤ(name ץ̵
  # ˤޤ)
  #
  #usehostname

  # ǧѤ˥⡼ȤΥƥ̾ <n> ˤޤ
  #
  #remotename <n>

  # 륷ƥ ARP[Address Resolution Protocol]ơ֥³
  # IP ɥ쥹ȤΥƥΥͥåȥɥ쥹ɲäޤ
  #
  #proxyarp

  # PAP ǧѤ˥ƥΥѥɥǡ١Ȥޤ
  #
  #login

  #  n äȤˡ³ LCP echo-request Υե졼ޤLinux
  # ξ硢³褫 n ô֥ѥåȤϤʤ echo-request 
  # ޤ̾³ echo-request Ϥ echo-reply ֤ޤ
  # ץ lcp-echo-failure ץȤߤ碌ơ³ڤƤ
  # 뤳ȤǧǤޤ
  #
  #lcp-echo-interval <n>

  # LCP echo-request  n äƤ̵ä硢³ڤƤ
  # Τȸʤ pppd ³λޤΥץȤ硢
  # lcp-echo-interval  0 ʳͤꤷƤɬפޤΥ
  # ȤСǥĴ٤ʤǤʪŪ³ڤ
  # (ǥबϥ󥰥åפ) PPP ³λ뤳ȤǤޤ
  #
  #lcp-echo-failure <n>

  # LCP κֳ֤ n äˤޤ(ǥեȤ 3 äǤ)
  #
  #lcp-restart <n>

  # LCP terminate-request  n 褦ˤޤ(ǥեȤǤ 3)
  #
  #lcp-max-terminate <n>

  # LCP configure-request  n 褦ˤޤ(ǥեȤǤ 10)
  #
  #lcp-max-configure <n>

  # LCP configure-NAK  n ļȤ configure-Reject 褦ˤ
  # (ǥեȤǤ 10)
  #
  #lcp-max-failure <n>

  # IPCP κֳ֤ n äˤޤ(ǥեȤǤ 3)
  #
  #ipcp-restart <n>

  # IPCP teriminate-request  n 褦ˤޤ(ǥեȤǤ 3)
  #
  #ipcp-max-terminate <n>

  # IPCP configure-request  n 褦ˤޤ(ǥեȤǤ 10)
  #
  #ipcp-max-configure <n>

  # IPCP configure-NAK  n ĤޤǼȤ configure-Rejects 褦
  # ˤޤ(ǥեȤǤ 10)
  #
  #ipcp-max-failure <n>

  # PAP ǧڤƳޤǤλ֤ n äˤޤ(ǥեȤǤ 3)
  #
  #pap-restart <n>

  # PAP autenticate-request п n Ĥˤޤ(ǥեȤǤ 10)
  #
  #pap-max-authreq <n>

  # CHAP ǧڤƳޤǤλ֤ n äˤޤ(ǥեȤǤ 3)
  #
  #chap-restart <n>

  # CHAP ǧڤ n ߤޤ(ǥեȤǤ 10)
  #
  #chap-max-challenge

  # Υץꤷ硢³ n äȤ CHAP ǧڤ򷫤
  # ޤ
  #
  #chap-interval <n>

  # Υץꤹȡ IP ɥ쥹򥪥ץꤷ
  # Ƥ³褬Ƥ IP ɥ쥹 IP ɥ쥹ˤޤ
  #
  #ipcp-accept-local

  # Υץꤹȡ⡼Ȥ IP ɥ쥹򥪥ץꤷ
  # Ƥ³褬ꤷ IP ɥ쥹⡼Ȥ IP ɥ쥹ˤޤ
  3
  #ipcp-accept-remote
  ______________________________________________________________________

  14.2.  ɤΥץꤹ٤

  󡢤Ͼˤޤ

  ʲ˼ΤϡŪΤۤȤɤ򥫥СǤ 2 ĤδŪʥ
  ΥץեǤ

  ʤ顢ưʤä硢ҥʷե (/etc/ppp/options.tpl)
   pppd Υޥ˥奢ɤߤޤ礦碌ơ³ΥФ
  륷ƥԤ桼ݡȷ䤤碌ƤߤΤ⤤Ǥ
  

  14.2.1.  /etc/ppp/options(PAP/CHAP Ȥʤ)

  ʲ PAP/CHAP ǧڤɬפȤʤѤǤ

  ______________________________________________________________________
  # /etc/ppp/options (NO PAP/CHAP)
  #
  # pppd Хåɤʤ褦ˤޤ
  -detach

  # ⤷ IP ɥ쥹ʤ 0.0.0.0  IP ɥ쥹˽񤭤
  # 
  0.0.0.0:

  # ǥȤޤ
  modem

  # ꥢǥХʣΥץȤʤ褦˥åݤ uucp
  # ΥåȤޤ
  lock

  # ϡɥեȥȤޤ
  crtscts

  # PPP ³ǥեȤηϩˤޤ
  defaultroute

  # ȥ륭饯ڥפޤ
  asyncmap 0

  # ФѥåȤ礭 552 ХȤˤޤ
  mtu 552

  # ȤѥåȤ礭 552 ХȤˤޤ
  mru 552
  #
  #-------END OF SAMPLE /etc/ppp/options (no PAP/CHAP)
  ______________________________________________________________________

  14.2.2.  /etc/ppp/options (PAP/CHAPȤ)

  Ф PAP  CHAP ǧڤ硢嵭Υץե˰ʲ
  ιԤդäƤ

  ______________________________________________________________________
  #
  # ǧڤκݤ ISP ǤΥ桼̾ۥ̾ȤƻȤޤ
  name <your ISP username>        # ιԤ˺줺ѹ뤳

  # PAP  CHAP ǧڤŪ˹Ԥɬפ硢ʲŬڤʹԤΥ
  # 򳰤

  #+chap
  #+pap
  #
  # /etc/ppp/pap-secrets ե뤬Ź沽Ƥ硢ʲιԤΥ
  # Ȥ򳰤

  #+papcrypt
  ______________________________________________________________________

  15.  /etc/resolv.conf ե

  ʹ֤̾դΤǤԥ塼ϿդǤ
  TCP/IP ͥåȥ(ʤ󥿡ͥåȤ)Ǥϡ䤿ϥޥ
  򤽤̾ΤǻꤷƤΥޥ"ɥᥤ"°Ƥޤ㤨
  С䤬ȤäƤ Linux ơ archenland Ȥ̾
  ǡhedland.edu.au ɥᥤ°ƤޤΥޥοʹָΥ
  쥹 archenland.hedland.edu.au Ǥ¾Υ󥿡ͥåȤ³
  줿ޥ󤫤餳Υޥ򸫤Ĥ뤿ˤ IP ֹȤޤ

  Τ褦ˡޥ(ȥɥᥤ)̾Τ IP ֹѴ()뤿˥
  󥿡ͥåȾѰդƤΤ Domain Name Service(DNS)Ǥ

  PPP ³ξ硢긵 Linux ޥˡɤǥۥ̾ IP ֹѴ
  (ɥ쥹β)ǽˤʤ뤫ꤷơʤޥ̾ȤäƤ⡢
  ԥ塼ɬפ IP ֹѴǤ褦ˤƤɬפޤ

  Ĥˡ³ƤΥۥ̾ /etc/hosts ե˽񤭤ळ
  Ǥ(󥿡ͥåȤ³硢ŪˤԲǽǤ)̾ǤϤ
  줾Υޥ IP ɥ쥹ľܻȤΤĤˡǤ (
   LAN ʳǤϤȤƤ⵭ǤʤǤ礦)

  ˡϡɤǥۥ̾ IP ֹѴưŪ˹Ԥ뤫򶵤
  ȤǤDomain Name Server ΥӥԤʤäƤΤǡɬפ
  Ȥ DNS  IP ֹ /etc/resolv.conf ե˻ꤹ뤳ȤǤ

  PPP ФΥƥ/桼ݡȤ̾ 2 Ĥ DNS  IP ֹ
  򶵤ƤϤǤ( 1 ĤнʬǤΥȥ֥
  ƤƤ 2  DNS ꤷƤޤ)

  ξ硢/etc/resolv.conf ϰʲΤ褦ˤʤǤ礦

  ______________________________________________________________________
  domain your.isp.domain.name
  nameserver 10.25.0.1
  nameserver 10.25.1.2
  ______________________________________________________________________

  /etc/resolv.conf (ɬפʤк)³ ISP ξ
  ȿǤޤΥեΥѡߥåϤΤ褦ˤ٤Ǥ

        -rw-r--r--   1 root     root           73 Feb 19 01:46 /etc/resolv.conf

  LAN ³Ƥơ /etc/resolv.conf  PPP ³ DNS
  ФΥɥ쥹դ廊Ǥޤޤ

  16.  PAP/CHAP ǧڥե

  pap  chap ѤǧˡȤ硢Τǧڥե(secrets
  file)ɬפǤϡ
  ______________________________________________________________________
  /etc/ppp/pap-secrets
  /etc/ppp/chap-secrets
  ______________________________________________________________________

  Ǥ

  ǽդƤޤPAP  CHAP 桼ǤϤʤԥ塼
  ƥǧڤ褦˥ǥ󤵤Ƥ뤳Ȥ򵭲ƤƤ
  

  Ȥȡ֤ɤ㤦ΡפȤ䤬ʹǤ͡

  ñ˸äƤޤȡä󤢤ʤΥԥ塼Ф PPP ³
  ĥȡʤǤʤʤΥԥ塼ƥΤɤʥ桼
  Ǥ⤽³ȤȤǤ櫓Ǥ餳PPP Ȥä 2 
   LAN(Local Area Network)ӤĤ WAN(Wide Area Network)ΩƤ
  ȤǤ櫓Ǥ

  ³ ISP ϡISP ³ƥ󥿡ͥåȤȤΥ桼̾
  ȥѥɤäƤϤǤISP ˤȤäơʤΥԥ塼
  ̾ϤɤǤ⤤Τǡԥ塼̾Ȥ ISP ϿƤ뤢
  ʤΥ桼̾ȤȤˤʤޤ

  ̾ pppd  name username ץǻꤷޤǤ顢ISP
  ä桼̾Ȥ硢/etc/ppp/options ե˰ʲΰԤ
  äޤ

  ______________________________________________________________________
  name your_username_at_your_ISP
  ______________________________________________________________________

  Ū˸̩˸ȡPAP ξ user our_username_at_your_ISP 
  Ȥ٤Ǥpppd PAP Ȥ硢ưŪ name  user
  Ȳᤷޤ name ץȤϡΥץ CHAP ˤ
  ͭʤȤǤ

  PAP/CHAP ϥԥ塼ǧڤ뤿Ǥ顢Ūˤϥ⡼
  üΥԥ塼̾ꤷƤɬפޤƤο
  ϰĤ ISP ȤʤᡢեΥ⡼ȥۥˤϥ磻
  ɥ(*)λ򤷤ƤнʬǤ

  ¿ ISP ǤϡĤֹʣΥǥ³줾ۤʤ
  ̾Υߥʥ륵Ф³ƤޤΤ褦ʾ⡼ȤΥ
  ԥ塼̾³˷ꤹ뤳ȤԲǽʤΤǡեΥ
  ȥۥˤϥ磻ɥɤλ򤷤Ƥ٤Ǥ

  16.1.  PAP ǧڥե

  /etc/ppp/pap-secrets եϤΤ褦ʷ򤷤Ƥޤ

  ______________________________________________________________________
  # Secrets for authentication using PAP
  # client        server       secret     acceptable local IP addresses
  ______________________________________________________________________

  4 Ĥ󤬥ڡ饯ǶڤƤޤ

  ISP ä桼̾ fredѥɤ flintstone Ȥޤ
  硢 /etc/ppp/options.ttySx եname fred ץ
  /etc/ppp/pap-secrets եˤ

  ______________________________________________________________________
  # Secrets for authentication using PAP
  # client        server  secret          acceptable local IP addresses
  fred            *       flintstone
  ______________________________________________________________________

  Τ褦ꤷޤ

  ϡޥ̾ fred(ºݤΥʥޥ̾
  ȤϰäƤ pppd ̾Ȥޤ)ơƤΥФ³
  flintstoneȤѥɤȤȤˤʤޤ

  餫Ū IP ɥ쥹äƤʳ IP 
  쥹ꤹɬפϤʤȤ˸դ

  PAP ȤäʣΥޥ³褦ʾ硢줾³褴Ȥ˰
  ʤ桼̾Ȥ³Υޥ̾Ĵ٤ɬפޤ
  pap-secrets եɬפʹԤդäơ³Υޥ󤴤Ȥname
  ץꤷޤ

  16.2.  CHAP ǧڥե

  ߤΥС pppd ǤǧɬפǤʤʤ
  ޥ³ǧڤƱ³Υޥ򤢤ʤΥޥǧڤ
  ɬפޤ

  ʤΥޥ fred ǥ⡼ȤΥޥ barney ξ硢ʤΥޥ
   /etc/ppp/options.ttySxˤname fred remotename barney ץ
  򡢥⡼ȥޥ /etc/ppp/options.ttySx եˤ name barney
  remotename fred ץ򤽤줾ꤷƤɬפޤ

  fred /etc/chap-secretsեϤΤ褦ˤʤޤ

  ______________________________________________________________________
  # Secrets for authentication using CHAP
  # client        server  secret            acceptable local IP addresses
  fred            barney  flintstone
  ______________________________________________________________________

  barney ΤϤǤ

  ______________________________________________________________________
  # Secrets for authentication using CHAP
  # client        server  secret            acceptable local IP addresses
  barney          fred    flintstone
  ______________________________________________________________________

  17.  PPP ³ưǵư

  ơ/etc/ppp/options /etc/resolv.conf եޤ(ɬ
  ʤ /etc/ppp/pap|chap-secretsե) PPP ³ޤ
  ɤưǻƤߤޤ礦(ưǤޤȤǧǤƤ
  ưŪ³ˡޤ)

  ư³ΤˤϡǥꥻåȤ˽λǤ̿եȤɬפ
  Minicom ʤ ALT Q ǲǽǤ(ŤС minicom ʤ
  CTRL A Q Ǥ)

  롼ȤȤƥ󤷤Ƥ뤳ȤǧƤ

  minicom Τ褦̿եȤư̤ PPP Ф³ޤPPP
  ³Τ˲ޥɤɬפʤСΥޥɤ¹ԤƤ
  ˥å褦

        ~y}#.!}!}!} }8}!}$}%U}"}&} } } } }%}& ...}'}"}(}"} .~~y}

  ȤäǡƤϤǤ

  pap/chap ȤäƤ硢Хޥ³ǼưŪ ppp 
  ư졢󤷤ʤƤ嵭Τ褦ʥǡƤޤ(
  ˤäƤϤʤʤ⤢ޤ)

  ǥǥꥻåȤ̿եȤλ(minicom Ǥ ALT Q 
  CTRL A Q Ϥޤ)Linux (롼Ȥ)ץץȤФ

        pppd -d -detach /dev/cuaX &

  Ϥޤ

  -d ץϥǥХåϤλǡΥץȤ ppp ³
  ϤޤȤȤˡֲáƤƥΥե˵Ͽޤȥ
  ֥κݤˤϤΥեĴ٤ޤ礦

  ºݤϤ٤ cuaX ǤϤʤ̾ cua0  cua1 Ȥäºݤ˥
  ǥब³Ƥݡֹꤹ뤳Ȥ˺ʤ
  PPP ³ΩХǥΥ饤ȤǤϤǤPPP ³Ω
  ˤ¿λ֤ޤ

  

        ifconfig

  ޥɤȤä PPP 󥿡եξ֤Ĵ٤ޤ

  ͥåȤ롼ץХåǥХʳˡΤ褦 ppp ǥХɽ
  ϤǤ

  ______________________________________________________________________
    ppp0     Link encap:Point-Point Protocol
             inet addr:10.144.153.104  P-t-P:10.144.153.51 Mask:255.255.255.0
             UP POINTOPOINT RUNNING  MTU:552  Metric:1
             RX packets:0 errors:0 dropped:0 overruns:0
             TX packets:0 errors:0 dropped:0 overruns:0
  ______________________________________________________________________

  ǡ

  o  inet addr:10.144.153.104 Ϥʤ¦ IP ֹǡ

  o  P-t-P:10.144.153.51 ϥ¦ IP ֹǤ

  (ifconfig Ϥʤ PPP ФǻȤäƤ IP ֹʳ𤷤ʤ
  Τޤ)

  աifconfig ³ UP  RUNNING ֤ˤʤäƤ뤳Ȥ⼨Ƥ
  

  ⤷Τ褦ɽ줿硢

  ______________________________________________________________________
    ppp0     Link encap:Point-Point Protocol
             inet addr:0.0.0.0  P-t-P:0.0.0.0  Mask:0.0.0.0
             POINTOPOINT  MTU:1500  Metric:1
             RX packets:0 errors:0 dropped:0 overruns:0
             TX packets:0 errors:0 dropped:0 overruns:0
  ______________________________________________________________________

  PPP ³ޤΩƤޤ󡣸ҤǥХåˤĤƤξϤ
  

  Ʊˡ⡼ȥۥ(Ȥ)ؤηϩΩƤ뤫å
  礦Τˤϡ

        route -n

  ޥɤȤޤȡʲΤ褦ʽϤϤǤ

  ______________________________________________________________________
  Kernel routing table
  Destination     Gateway         Genmask         Flags MSS    Window Use Iface
  10.144.153.3    *               255.255.255.255 UH    1500   0        1 ppp0
  127.0.0.0       *               255.0.0.0       U     3584   0       11 lo
  10.0.0.0        *               255.0.0.0       U     1500   0       35 eth0
  default         10.144.153.3    *               UG    1500   0        5 ppp0
  ______________________________________________________________________

   ppp 󥿡ե2 ĤΥȥ꤬ǤƤ뤳Ȥä
  Ƥ

  ǽΤΤϥۥȤؤηϩ(H ե饰Ƥޤ)ǡ³ IP 
  쥹򼨤ƤޤؤηϩϤޤ

  2 ĤΤΤǥեȤηϩ(default route)ǡLinux PC Ϥηϩ
  ΥͥåȰƤǤϤʤƤΥѥåȤĤޤΥ
  եȤηϩͥåȥؤηϩȤ PPP мȤؤƤ
  PPP Фϲ桹ΥѥåȤ򥤥󥿡ͥåȤѥå
  桹ΤȤäƤʤФʤޤ

  롼ƥ󥰥ơ֥ 2 ĤΥȥ꤬Ĥʤ硢ְä
  ޤ(ǥХåˤĤƤξϤ򸫤Ƥ)

   'ping' Ȥä³ƥȤޤΤˤϡifconfig ɽ
  ³ IP ֹꤷơ

        ping 10.144.153.51

  ȤޤȡΤ褦ʽϤϤǤ

        PING 10.144.153.51 (10.144.153.51): 56 data bytes
        64 bytes from 10.144.153.51: icmp_seq=0 ttl=255 time=328.3 ms
        64 bytes from 10.144.153.51: icmp_seq=1 ttl=255 time=190.5 ms
        64 bytes from 10.144.153.51: icmp_seq=2 ttl=255 time=187.5 ms
        64 bytes from 10.144.153.51: icmp_seq=3 ttl=255 time=170.7 ms

  ɽϤĤޤǤ³ΤǡŬʤȤ CTRL C 򲡤ƽλ
  礦ȡ

        --- 10.144.153.51 ping statistics ---
        4 packets transmitted, 4 packets received, 0% packet loss
        round-trip min/avg/max = 170.7/219.2/328.3 ms

  ȤäɽϤǤ

  ˡۥ̾ ping ΥƥȤ򤷤Ƥߤޤ礦ꤹۥ̾ PPP
  ФǤϤʤ̤ΥȤˤۥȤǡưƤ뤳Ȥμ¤ʥۥ
  Ӥޤ㤨С

        ping sunsite.unc.edu

  Ȥޤ

  ϡꤷۥ̾ /etc/resolv.conf ǻꤷ DNS ؿҤͤ IP
  ֹѴƤ뤿¿֤ޤۤʤ(Ǥ⤽δ֤
  ǥΥ饤ȤǤƤϤǤ)Ƥ顢ʲΤ褦ʽ
  ɽϤǤ

         PING sunsite.unc.edu (152.2.254.81): 56 data bytes
        64 bytes from 152.2.254.81: icmp_seq=0 ttl=254 time=190.1 ms
        64 bytes from 152.2.254.81: icmp_seq=1 ttl=254 time=180.6 ms
        64 bytes from 152.2.254.81: icmp_seq=2 ttl=254 time=169.8 ms
        64 bytes from 152.2.254.81: icmp_seq=3 ttl=254 time=170.6 ms
        64 bytes from 152.2.254.81: icmp_seq=4 ttl=254 time=170.6 ms

  ŬʤȤ CTRL C 򲡤ߤ׾򸫤ޤ礦

        --- sunsite.unc.edu ping statistics ---
        5 packets transmitted, 5 packets received, 0% packet loss
        round-trip min/avg/max = 169.8/176.3/190.1 ms

  ȿäƤʤФʸΥǥХå˴ؤϤɤǤ

  ٤ƤޤԤС

        ppp-off

  ޥɤ³λޤ

  Ф餯θ˥ǥϥ󥰥åפϤǤ

  ޤϥ󥰥åפʤ硢ǥŸڤ뤫̿եȤΩ
   +++ ϤƥǥΥޥɥ⡼ɤꡢATH0 ޥɤ³
  ꡢǥफ OK ץץȤ뤳ȤǧƤ

  pppd äåեäƤޤ礦

  ______________________________________________________________________
  rm -f /var/lock/LCK..cuaX
  ______________________________________________________________________

  18.  ³ưˤ - ³ѥץȤκ

  chat Ȥä³ѤΥץȤСchat 󤷤 PPP 
  ưޤǼưŪ˹ԤΤǡɬפʺȤ(롼ȡ뤤 ppp 롼
  ΥСˤʤä)³ΤΥޥɤϤˤʤޤ

  18.1.  桼̾ȥѥɤĤäǧڤξ

  ³ ISP  PAP/CHAP ǧڤɬפȤʤʲΥץȤȤ
  Ǥ礦

  ppp ѥå󥹥ȡ뤵Ƥ 2 ĤΥե뤬餫
  ᥵ץȤѰդƤϤǤPPP 2.1.2 ξ硢Υե
   /usr/sbinˡPPP 2.2 ξ /etc/ppp/sciripts ǥ쥯ȥ
  äƤޤΥե

  PPP-2.1.2 ξ硢

        ppp-on
        ppp-off

  PPP-2.2 ξ

        ppp-off
        ppp-on
        ppp-on-dialer

  ȤʤäƤޤ

  ơPPP 2.1.2 ȤäƤ硢嵭ΥץեϺƤ
  Ȥ򶯤ᤷޤΥץեˤŪ꤬
  ޤ - ֤Ǥưסȸʤ - ⡢Υե
  ĹֻȤäƤޤ( HOWTO κǽΥСǤϿ
  ƤΤǤ)

  PPP 2.1.2 Υ桼Τˡʲ PPP 2.2 ΥѥåäƤ
  褤ץեҲ𤷤ޤʲΥץե򥳥ԡ
  ơPPP-2.1.2 °ΥץȤ˻Ȥ褦ˤᤷޤ
  18.2.  ppp-on ץ

   PPP ³򳫻Ϥ뤿 2 ܤΥץȤΤȾΤΤǤ

  ______________________________________________________________________
  #!/bin/sh
  #
  # PPP ³򳫻Ϥ뤿Υץȡ2 ĤΥץȤΤ 1 Ĥᡣ
  # Υɤ 'ps' ޥɤɽƤޤΤǤޤǤϤʤ
  # ñ

  #
  # Υѥ᡼ϼºݤͤѹ뤳
  TELEPHONE=555-1212      # ³Τֹ
  ACCOUNT=george          # 󡦥('George Burns')
  PASSWORD=gracie         # 嵭ȤΥѥ('Gracie Allen')
  LOCAL_IP=0.0.0.0        #  IP ֹ档ưŪꤢƤξ 0.0.0.0
  REMOTE_IP=0.0.0.0       # ³ IP ֹ档 0.0.0.0
  NETMASK=255.255.255.0   # ɬפʤХͥåȥޥλ
  #
  # ppp-on-dialer Ȥ褦ѿ export
  export TELEPHONE ACCOUNT PASSWORD
  #
  # ä򤫤ƥ򤹤륹ץȤΰ֡$PATH ѿ connect
  # ץǤϻȤʤΤХѥꤹ뤳(롼ȸ¤Ǥ
  # ȥƥۡˤʤΤǡηˤĤƤϼ䤷ʤ)
  #
  DIALER_SCRIPT=/etc/ppp/ppp-on-dialer
  #
  # ³γ
  #
  exec /usr/sbin/pppd debug /dev/ttySx 38400 \
          $LOCAL_IP:$REMOTE_IP \
          connect $DIALER_SCRIPT
  ______________________________________________________________________

  ppp-on-dialer ץȤϤΤ褦ˤʤޤ

  ______________________________________________________________________
  #!/bin/sh
  #
  # ppp-on ץȤθȾºݤ³ץȥʬ
  #
  chat -v                                                 \
          TIMEOUT         3                               \
          ABORT           '\nBUSY\r'                      \
          ABORT           '\nNO ANSWER\r'                 \
          ABORT           '\nRINGING\r\n\r\nRINGING\r'    \
          ''              \rAT                            \
          'OK-+++\c-OK'   ATH0                            \
          TIMEOUT         30                              \
          OK              ATDT$TELEPHONE                  \
          CONNECT         ''                              \
          ogin:--ogin:    $ACCOUNT                        \
          assword:        $PASSWORD
  ______________________________________________________________________

  18.3.  PPP ưץȤν

  ץȤ 2 ĤʬƤΤǡ˽Ƥߤޤ礦

  18.3.1.  ppp-on ץ

  ץȤơISP ä桼̾ȥѥɤϿޤ
  ISP ֹ˺줺ѹƤ

  TELEPHONE= ʲγƹԤϼºݤˤϥѿ '=' α¦ͤꤷƤ
  Τ(󥳥Ȥϴޤߤޤ)ƹԤơºݤ ISP 
  ΤꤷƤ

  ޤIP ֹ꤬ɬפʾ硢/etc/ppp/options եꤷ

  ______________________________________________________________________
   $LOCAL_IP:$REMOTE_IP \
  ______________________________________________________________________

  Ʊ DIALER_SCRIPT ѿºݤ˥뤹뤿ΥץȤ
  ХѥꤷƤ뤳ȤǧƤ⤷ΤΥ
  ץȤư̾Ѥppp-on ץȤ뤳
  ⤪˺ʤ

  ppp-on ץȤꤷ³ PPP Ф桼̾/ѥ
  ɷǧڤ򤷤Ƥ硢ppp-on-dialer ץȤѹɬפ
  ޤ

  ư /etc/rc.serial ǥꥢסȤϽƤ뤫Τޤ
  󤬡ppp-on ץȤŪ˥ꥢݡȤꤹΤ⤤
  ǥǤƤСǥ(ꥢݡȤꥻå
  뤫Τʤ)¾Υץǰ¿ƻȤȤǤޤ

  Τˤϼºݤ pppd 򳫻ϤԤľ˰ʲΰԤäޤ

  ______________________________________________________________________
  /bin/setserial /dev/cuaX spd_vhi
  ______________________________________________________________________

  spd_vhi ץꤷƤС38,400 ܡǻȤȤˡ
  ݤˤ 115,200 ܡ³뤳Ȥˤʤޤ28.8k(ʾ)®ǥ
  硢Τ褦ꤷƤΤǤ礦ʤ顢¿
  14,400 ܡΥǥϥԥ塼ȥǡȤꤹ륷ꥢ
  Τ褦ʥԡɤǤϽǤʤ褦Ǥ

  ǥΥޥ˥奢åơǥΥꥢκǹ®
  38,400 ξ硢ʲΤ褦ꤷޤ

  ______________________________________________________________________
  /bin/setserial /dev/cuaX spd_normal
  ______________________________________________________________________

  18.3.2.  ¦Ǥ PPP γ

  ppp-on-dialer ץȤϡ󤹤 pppd ưŪ˵ư륵
  ФͭǤ󤷤ƤŪ PPP ưʤФʤʤ
  Ф⤢ޤ

  Ф PPP ưΤ˲餫Υޥɤɬפʾ硢ppp-on-dialer
  ץȤɬפޤ

  ץȤκǸ(ѥɤιԤ)ˡФ PPP ư뤿
   ɬפʸ  PPPưޥ ФɲäƤPPP ư
  ɤ¹ԤݤʸϥץץȤˤޤ(Bourne 
  ̤ʰ̣ʸ - 㤨 $ [ ] դƤ)

  ƤСchat ΥץץȤȤСISP  PPP 
  ư뤿Υޥɤ¹Ԥޤ

  ξ硢PPP ФɸŪ Bash Υץץ

  ______________________________________________________________________
  [hartr@kepler hartr]$
  ______________________________________________________________________

  äƤΤǡʸ

  ______________________________________________________________________
  ppp
  ______________________________________________________________________

  ϤơФ PPP ưޤ

  ʸХƤǧǤ褦ˤƤΤǡξ
  硢ʲΤ褦<ʸ  ޥ>Ȥ߹碌Ӥޤ

  ______________________________________________________________________
          hartr--hartr    ppp
  ______________________________________________________________________

  Ǥϰλ˥ץץȤȤʤä硢å
  äơ٥ץץȤԤޤ

  ץץȤȤС'ppp' Ȥʸޤ

  ադäԤιԤι \ դ chat ץΤ
  ԤȤߤʤ褦ˤƤȤ˺ʤ褦ˡ

  ԹʤȤˡ³ΤӤȤ˰ۤʤץץȤ֤Ƥ륵Ф⤤
  ĤޤΤ褦ʾ硢minicom ʤɤȤäƲ٤Ф˥
  󤷤ơɤΤ褦ʸ󤬥ץץȤ˻Ȥ졢ΤΤɤʬ
   PPP ư뤿ʸѤǤ뤫Ĵ٤Ƥɬפ
  

  18.3.3.  ppp-on-dialer ץ

   ppp ³򳫻Ϥ뤿ΥץȤθȾǤ

  աchat ץȤ̾ԤǤˤĤƤХåå
  (\)(ʹ֤˸䤹褦)ʣԤʬƤԤԤ˸뤿
  ȤƤꡢץȤΰǤϤޤ

  Υޥɤܺ٤˸Ƥмºݤ˲ԤƤ뤫(ԤϤ)
  ǤϤǤ

  18.4.  chat ץȤΰ̣

  chat ΥץȤ "Ȥäʸ  ʸ"Ȥ߹碌Ϣ
  ͤΤǤʤʸˤϲʸ
  ʤФʤޤ

  ʸȤʤƤ⡢餫鲿뤿ˤϡʸ
  ("")Ȥʸ˻ꤹɬפޤƱͤˡʸ
  ȤäƤ⤳餫ʤʸ˶ʸꤷ
  ޤʸʣθξ(㤨 NO CARRIER)ʸ򥯥
  ưĤʸȸʤ褦ˤʤФʤޤ

  Ǥ chat ץȤ :-

  o  exec chat -v
     chat ưޤ-v ץꤹȡchat ιԤƤ
     Ϥ򥷥ƥΥե(̾ /var/log/messages)˽񤭤ߤޤ
     chat ץȤư褦ˤʤ -v ץ򳰤
     ʥʤ褦ˤޤ礦

  o  TIMEOUT         3
     ʸȤޤǤΥॢȤλ֤ 3 äˤޤ٤ǥ
     ȤäƤ硢λ֤ 5 ä 10 äˤΤФƤɬפ뤫
     Τޤ

  o  ABORT           '\nBUSY\r'
     BUSY Ȥʸнߤޤ

  o  ABORT           '\nNO ANSWER\r'
     NO ANSWER Ȥʸнߤޤ

  o  ABORT           '\nRINGING\r\n\r\nRINGING\r'
     RINGING Ȥʸ(֤)Ȥнߤޤ
     ïǥä򤫤ƤƤޤ

  o  ""              \rAT
     ǥफʸʤƤ AT ʸޤ

  o  "OK-+++\c-OK";   ATH0
      chat Υ顼쵡ǽȤäƤΤǾʣǤΥ
     ɤΰ̣ϡ
     OK ԤäƤơ⤷ OK ʤ(ξϤäȥǥब
     ɥ⡼ɤˤʤäƤʤΤǤ礦) +++ (ɸŪ Hayes ߴ
     Υǥǥޥɥ⡼ɤˤ뤿̿) OK ԤOK 
      ATH0(ǥϥ󥰥åץޥ)ޤ
     ƤСǥब饤ˤʤäƤǤ⤦ޤ
     Ǥ

  o  TIMEOUT         30
     ʸΥץȤǥॢȤλ֤ 30 äˤޤchat 
     ץȤॢȤǽλƤޤ硢λ֤ 45 äȤ
     ĹƤߤƤ

  o  OK              ATDT$TELEPHONE
     OK Ԥ(ATH0 ޥɤǥ OK ֤ޤ)ä򤫤
     ֹ뤷ޤ

  o  CONNECT         ''
     CONNECT Ԥ(긵Υǥब³ΥǥˤĤʤ CONNECT 
     ֤ޤ)ޤֻϲޤ

  o  ogin:--ogin:    $ACCOUNT
     Ǥ¿Υ顼λȤƤޤ󡦥ץץ
     Ԥޤ(..ogin:)⤷ॢȻ˼Ȥʤä
     硢꥿äƺ٥󡦥ץץȤԤޤץץ
     ȤС桼̾ޤ(桼̾$ACCOUNTȤѿ
     äƤޤ)

  o  assword:        $PASSWORD
     ѥɥץץȤԤѥɤޤ(ѥɤ⥷
     ѿäƤޤ)

   chat ץȤˤϤʤΥ顼쵡ǽȤߤޤƤޤ
   chat ˤϤʾˤ⤤ʵǽޤΤǡܺ
  ˤĤƤϥޥ˥奢(man 8 chat)

  18.5.  PAP/CHAP ǧڤȤΥץ

  ³ ISP  PAP/CHAP ǧڤȤ硢chat ץȤϤäȴñ
  ʤޤξ硢chat ä򤫤ƤĤʤޤԤĤǡθ
   login  pppd ˤޤޤ

  ______________________________________________________________________
  #!/bin/sh
  #
  # ppp-on ץȤθȾ

  exec chat -v                                            \
          TIMEOUT         3                               \
          ABORT           '\nBUSY\r'                      \
          ABORT           '\nNO ANSWER\r'                 \
          ABORT           '\nRINGING\r\n\r\nRINGING\r'    \
          ''              \rAT                            \
          'OK-+++\c-OK'   ATH0                            \
          TIMEOUT         30                              \
          OK              ATDT$TELEPHONE                  \
          CONNECT         ''
  ______________________________________________________________________

  18.6.  pppd ΥǥХå -f ǻꤹ륪ץե

  Ǥ˸褦ˡpppd  -d ץդХǥХå󤬽Ϥ
  褦ˤʤޤ'debug' Ȥץ -d ƱǤ

  ץȤ³ΥƥȤ򤹤ΤǤ顢ΤȤ debug 
  դޤޤˤƤޤ礦(աpppd Ȥꤹ login
  ϤäȤޤ syslog եˤΤǡǥζ
  褬ϥȥ֥򵯤Τޤ󡣤äȤ⡢ʤ뤿
  ˤ³˼ԤƤФ餯δ֤줳 pppd 򤳤ͤɬפ
  礦)

  ٤ƤưƤ뤳ȤǧǤǥХåץ
  ޤ礦

  ppp Υץե /etc/ppp/options  /etc/ppp/options.ttySx
  ʳ֤Ƥ硢pppd  -f ץǥե̾ꤷޤ

  ______________________________________________________________________
  exec /usr/sbin/pppd debug -f options.myserver /dev/ttySx 38400 \
  ______________________________________________________________________

  19.  ³ץȤΥƥ

  X ɥȤäƤϿ Xterm 򳫤뤤Ͽ
  󥽡򳫤ƥ롼ȤȤƥ󤷤ޤ

  ΥåǤ /var/log/messages (ƥΥե)

        tail -f /var/log/messages

  ȤƥåɽƤޤ

  ǽΥɥ(뤤ϲۥ󥽡)ǼΥޥɤ¹Ԥޤ

        ppp-on &

  (/usr/sbin/ppp-on ̾ѤƤФ̾Ǽ¹ԤƤ) 
  ɤκǸ & դƥХå饦ɤˤʤä硢(³ڤ
  )ppp λޤǥߥʥ˥ץץȤɽʤʤΤǸ
  ա

  Ǥ⤦ĤΥɥ˰ܤäƥƥξ֤Ĵ٤ޤ

  (chat  -v ץդ pppd  -d ץդƤ)
  Τ褦ʥåɽϤǤȾ chat ץȤ
  åǡȾ pppd εưåˤʤäƤޤ

  ______________________________________________________________________
  Oct 21 16:09:58 hwin chat[19868]: abort on (NO CARRIER)
  Oct 21 16:09:59 hwin chat[19868]: abort on (BUSY)
  Oct 21 16:09:59 hwin chat[19868]: send (ATZ^M)
  Oct 21 16:09:59 hwin chat[19868]: expect (OK)
  Oct 21 16:10:00 hwin chat[19868]: ATZ^M^M
  Oct 21 16:10:00 hwin chat[19868]: OK -- got it
  Oct 21 16:10:00 hwin chat[19868]: send (ATDT722298^M)
  Oct 21 16:10:00 hwin chat[19868]: expect (CONNECT)
  Oct 21 16:10:00 hwin chat[19868]: ^M
  Oct 21 16:10:22 hwin chat[19868]: ATDT722298^M^M
  Oct 21 16:10:22 hwin chat[19868]: CONNECT -- got it
  Oct 21 16:10:22 hwin chat[19868]: send (^M)
  Oct 21 16:10:22 hwin chat[19868]: expect (ogin:)
  Oct 21 16:10:22 hwin chat[19868]:  57600^M
  Oct 21 16:10:23 hwin chat[19868]: ^[[;H^[[2J^M^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I      This is node  kepler.hedland.edu.au^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I^I      at Hedland Campus^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I^I       Hedland College^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I  Authorised user ONLY are to use this system^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I For more information, contact ComputerSystems^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I^I     on +61 (0)91 72 0400^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I^I^I     or^M
  Oct 21 16:10:23 hwin chat[19868]: ^I^I       email:  help@hedunx.hedland.edu.au^M
  Oct 21 16:10:23 hwin chat[19868]: ^M
  Oct 21 16:10:23 hwin last message repeated 3 times
  Oct 21 16:10:23 hwin chat[19868]: kepler login: -- got it
  Oct 21 16:10:23 hwin chat[19868]: send (hartr^M)
  Oct 21 16:10:23 hwin chat[19868]: expect (ssword:)
  Oct 21 16:10:23 hwin chat[19868]:  hartr^M
  Oct 21 16:10:23 hwin chat[19868]: Password: -- got it
  Oct 21 16:10:23 hwin chat[19868]: send (??????^M)
  Oct 21 16:10:23 hwin chat[19868]: expect (hartr)
  Oct 21 16:10:23 hwin chat[19868]:  ^M^M
  Oct 21 16:10:24 hwin chat[19868]: Last login: Sat Oct 21 14:55:53 on  ttyC0^M
  Oct 21 16:10:24 hwin chat[19868]: ^M
  Oct 21 16:10:24 hwin last message repeated 9 times
  Oct 21 16:10:24 hwin chat[19868]: ^I^IYou have logged into node  kepler.hedland.edu.au^M
  Oct 21 16:10:24 hwin chat[19868]: ^M
  Oct 21 16:10:24 hwin chat[19868]:            This is a Compaq Prolinea 486DX2/50 running Linux 1.1.54^M
  Oct 21 16:10:24 hwin chat[19868]: ^M
  Oct 21 16:10:24 hwin chat[19868]:        This computer operates as the main Hedland Campus communications^M
  Oct 21 16:10:24 hwin chat[19868]: ^I       node, providing dial-in terminal and SLIP access,^M
  Oct 21 16:10:24 hwin chat[19868]: ^I^I      Kepler also runs the Hedland end of^M
  Oct 21 16:10:24 hwin chat[19868]: ^I^I    the Hedland/Newman inter-Campus WAN link^M
  Oct 21 16:10:24 hwin chat[19868]: ^M
  Oct 21 16:10:24 hwin chat[19868]: ^M
  Oct 21 16:10:24 hwin chat[19868]: [hartr -- got it
  Oct 21 16:10:24 hwin chat[19868]: send (ppp^M)
  Oct 21 16:10:27 hwin pppd[19872]: pppd 2.1.2 started by root, uid 0
  Oct 21 16:10:27 hwin pppd[19873]: Using interface ppp0
  Oct 21 16:10:27 hwin pppd[19873]: Connect: ppp0 <--> /dev/cua1
  Oct 21 16:10:27 hwin pppd[19873]: fsm_sdata(LCP): Sent code 1, id 1.
  Oct 21 16:10:27 hwin pppd[19873]: LCP: sending Configure-Request, id 1
  Oct 21 16:10:27 hwin pppd[19873]: fsm_rconfreq(LCP): Rcvd id 1.
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: rcvd MRU
  Oct 21 16:10:27 hwin pppd[19873]: (1500)
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: rcvd ASYNCMAP
  Oct 21 16:10:27 hwin pppd[19873]: (0)
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: rcvd MAGICNUMBER
  Oct 21 16:10:27 hwin pppd[19873]: (a098b898)
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: rcvd PCOMPRESSION
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: rcvd ACCOMPRESSION
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: lcp_reqci: returning CONFACK.
  Oct 21 16:10:27 hwin pppd[19873]: fsm_sdata(LCP): Sent code 2, id 1.
  Oct 21 16:10:27 hwin pppd[19873]: fsm_rconfack(LCP): Rcvd id 1.
  Oct 21 16:10:27 hwin pppd[19873]: fsm_sdata(IPCP): Sent code 1, id 1.
  Oct 21 16:10:27 hwin pppd[19873]: IPCP: sending Configure-Request, id 1
  Oct 21 16:10:27 hwin pppd[19873]: fsm_rconfreq(IPCP): Rcvd id 1.
  Oct 21 16:10:27 hwin pppd[19873]: ipcp: received ADDR
  Oct 21 16:10:27 hwin pppd[19873]: (10.144.153.51)
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: ipcp: received COMPRESSTYPE
  Oct 21 16:10:27 hwin pppd[19873]: (45)
  Oct 21 16:10:27 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:27 hwin pppd[19873]: ipcp: returning Configure-ACK
  Oct 21 16:10:28 hwin pppd[19873]: fsm_sdata(IPCP): Sent code 2, id 1.
  Oct 21 16:10:30 hwin pppd[19873]: fsm_sdata(IPCP): Sent code 1, id 1.
  Oct 21 16:10:30 hwin pppd[19873]: IPCP: sending Configure-Request, id 1
  Oct 21 16:10:30 hwin pppd[19873]: fsm_rconfreq(IPCP): Rcvd id 255.
  Oct 21 16:10:31 hwin pppd[19873]: ipcp: received ADDR
  Oct 21 16:10:31 hwin pppd[19873]: (10.144.153.51)
  Oct 21 16:10:31 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:31 hwin pppd[19873]: ipcp: received COMPRESSTYPE
  Oct 21 16:10:31 hwin pppd[19873]: (45)
  Oct 21 16:10:31 hwin pppd[19873]:  (ACK)
  Oct 21 16:10:31 hwin pppd[19873]: ipcp: returning Configure-ACK
  Oct 21 16:10:31 hwin pppd[19873]: fsm_sdata(IPCP): Sent code 2, id 255.
  Oct 21 16:10:31 hwin pppd[19873]: fsm_rconfack(IPCP): Rcvd id 1.
  Oct 21 16:10:31 hwin pppd[19873]: ipcp: up
  Oct 21 16:10:31 hwin pppd[19873]: local  IP address 10.144.153.104
  Oct 21 16:10:31 hwin pppd[19873]: remote IP address 10.144.153.51
  ______________________________________________________________________

  ( - ǤŪ IP ֹȤäƤꡢΥޥ󤫤餽ֹ
  PPP ФäƤޤưŪ IP ֹγƤȤäƤС
  褦ʤȤϵޤ)

  ޤԤä褦˸ޤΤǡΤ褦 IP ֹȥۥ̾Ȥä
  ping Ƥߤơ³ƯƤ뤫ǧޤ

  ǤĤʤޤweb Υ֥饦ǤⲿǤȤäƥͥåȥդƤ
  ޤ礦

  20.  PPP ³νλ

  PPP ³λ硢ppp-off ޥɤȤޤ(Υޥɤ
  Ԥ뤿ˤϥ롼ȸ¤ PPP 롼פ°ƤʤФʤʤ
  ˺ʤ)

  PPP νλˤϤΤ褦ʥϤ뤳ȤǤ礦

  ______________________________________________________________________
  Oct 21 16:10:45 hwin pppd[19873]: Interrupt received: terminating link
  Oct 21 16:10:45 hwin pppd[19873]: ipcp: down
  Oct 21 16:10:45 hwin pppd[19873]: default route ioctl(SIOCDELRT): Bad address
  Oct 21 16:10:45 hwin pppd[19873]: fsm_sdata(LCP): Sent code 5, id 2.
  Oct 21 16:10:46 hwin pppd[19873]: fsm_rtermack(LCP).
  Oct 21 16:10:46 hwin pppd[19873]: Connection terminated.
  Oct 21 16:10:46 hwin pppd[19873]: Exit.
  ______________________________________________________________________

  SIOCDELRT ȤåФƤޤñ pppd λƤ
  ȤȤ򼨤ƤʤΤ ˤɬפϤޤ

  21.  ǥХå

  ³ޤʤȤˤ̵ͳޤ - 㤨 chat 
  λʤäꡢò˥Υ¿äꡣ꤬顢ޤ
  syslog եĴ٤Ƥߤޤ礦

  äȤ褯ְ㤤ϥץȤ˲Ǥְ㤤뤳ȤǤ
  ץȤ򤢤餿ƤäȸľƤߤޤ礦 - 桹ʹ֤ϼºݤ
  Ǥޤ줿ʸǤϤʤǤäĤʸɤǤޤʤȤ
  ˺줺ˡ

  ⤦ġ褯ְ㤤ϥͥ 1.2.X  PPP-2.2 ȤäƤꡢ
  ͥ 1.3.X/2.0.X  PPP-2.1.2 ȤäƤǤͥΥС
  ˤä pppd ȤäƤ

  Ǥʾ硢PPP FAQ ܤ̤ޤ礦(PPP FAQ  PPP ˴ؤ
  򽸤᤿ΤǤ) FAQ Ϥޤޤΰ򥫥СƤꡢ
  ƤФѰդƤޤ伫Ȥ(ᤷ)и
  ȡ⤷ FAQ ̵С ppp ˴ؤΤǤϤ
  󡣻ξ ELF ǤΥͥȤʤ饫ͥ⥸塼Ŭ
  ʤΤ˥С󥢥åפƤʤȤΤǤϡ PPP
  ФȤϲȥܥ䤭ʤ 2 (Ȥۤܰ)ᤷƤޤޤ

  21.1.  PPP 򥳥ѥ뤷ΤǤLinux ǧƤޤ

  ͥ 1.3.X/2.0.X Ȥäơͥ˥⥸塼륵ݡȵǽȤ
  ǡPPP ǽ⥸塼Ȥƥѥ뤷(ƥ⥸塼Ȥߤ
  )ޤ͡

  kerneld Ȥäɬפʥ⥸塼ưɤƤʤ硢PPP 
  Ū ppp ⥸塼ɤɬפޤ(¿ʬꥢ
  饤Х⥸塼ɤɬפǤ礦)

  ưǤ뤿ˤϡ롼Ȥˤʤä

  ______________________________________________________________________
          insmod ppp
  ______________________________________________________________________

  ޤ

  ꥢɥ饤Х⥸塼ɤϡ

  ______________________________________________________________________
          insmod slhc
  ______________________________________________________________________

  ޤ

  ʤ顢ͥ⥸塼ϼưɤ褦ˤ
   kerneld mini-howto ɤǡưɤ褦ꤷޤ礦

  ⤦ĤβǽϡLinux 2.0.x  ppp-2.1.2 ȤäƤǤ(
   1.2.x Υͥɬפʥѥå򤢤Ƥ ppp-2.2 ȤäƤ
  )

  ͥ ppp ΥС⤦٥åƤ֤
  

  ͥ 2.0.x  ppp-2.2 ɬפȤޤ

  ͥ 1.2.x  ppp-2.1.2 Ȥޤppp-2.2 ȤΥѥå
  ޤ

  21.2.  ǥեȥ롼(default route)Ǥޤ

  LAN ѤΥͥå(¾ͥåȥ³)ȤäƤơǤ˥
  եȥ롼ȤꤷƤޤ󤫡

  ˡ(ñ)⤷Ƥޤ

  ϥǥեȥ롼ȤϰĤǤʤȤǤǥեȥ롼
  ȤϡηϩƤǤϤʤѥåȤϩǤ̾
  եȥ롼Ȥϥ󥿡ͥåȰƤˤʤäƤϤǤ

  ԹʤȤˡĤ Linux Υǥȥӥ塼Ǥϥ
  ͥåȤǥեȥ롼Ȥˤ褦ꤷƤޤͥå
  Ƥ륷ƥեơ롼ƥ󥰾
  ʥͥåȤˤϥǥեȥ롼ȤǤϤʤΥ롼
  ƥ󥰾ꤹ褦ˤɬפޤ

  Τˤ NET2-Howto  Linux Network Administrator Guide Ĵ٤
  

  22.  2 ĤΥͥåȥ PPP ǤĤʤˤ

  Ū˰ Linux PC  PPP Ф³ 2 Ĥ LAN 
  PPP Ȥä³㤤ϤޤPPP  аΥץȥ
  Ǥ뤳Ȥ˺ʤ

  ʤ顢2 Ĥ LAN ³硢ϩɤ٤򤭤
  򤷤ƤɬפޤNET-2 howto  Linux Network
  Adminitrator Guide(NAG)ɤߤޤ礦ޤO'Reilly and Assoc 
  Ƥ"TCP/IP Network Administration(ISBN 0-937175-82-X) ΩĤ
  Ǥ礦

  2 Ĥ LAN ³뤿ˤϡۤʤ IP ͥåȥֹꤷ(
  ƱͥåȥֹǤ⥵֥ͥåȲ)Ū IP ֹȤ
  IP masquerade ȤʤФޤIP masquerade Ȥ
  ˤĤƤ IP masquerade mini-howto 

  22.1.  IP ֹ

  ³ LAN δԤ̤PPP 󥿡եξüǻȤ IP 
  ޤŪ IP ֹȤ硢ֹȤɬפ⤢
  Ǥ礦

   /etc/ppp/options[.ttyXX] եɬפޤLAN 
  ³Ѥ˷ޤäǥȥݡȤȤ褦ˤƤΤǤ礦
  Τˤ /etc/ppp/options ե⽤ʤФʤʤΤ
  󡣹碌ơLAN ³ʳ³ΤˤŬڤ options.ttyXX
  եɬפޤ

  Ū IP ֹȤǼ褦ˡʤ¦ PPP üŬڤ IP
  ֹꤷƤ

  22.2.  ϩ

   LAN  PPP ³ͳƥѥåȤήϩꤹɬ
  ޤΤˤ 2 ĤʳɬפǤ

  ޤǽˡPPP ³򤷤Ƥޥ󤫤³Υͥåȥؤηϩ
  ꤷޤ³褬󥿡ͥåȤξ硢pppd  `defaultroute' 
  դФηϩǤޤ

  2 Ĥ LAN Ĥʤ PPP ³ȤΥͥåȥ롼
  ꤷʤФʤޤ󡣤Τˤ/etc/ppp/ip-up ץȤ
  route ޥɤäޤˡˤĤƤϡ³λƤ顢
  ξϤ

  ˡ LAN ³Ƥ¾Υԥ塼ءʤ
  Linux ޥ ppp ³Ƥͥåȥؤ 'gatway' ˤʤäƤ
  뤳ȤΤ餻ޤ

  ³ΥͥåȥδԤƱȤ򤷤ʤФޤ
  󡣤ʤ顢()ʤΥͥåȥإѥåȤäƤ
  ϥǥեȥ롼ȤǤϤʤΥͥåȥ롼ȤɬפǤ(³
   LAN ʤΥޥͳƥ󥿡ͥåȤ³Ƥ
  )

  22.3.  ͥåȥƥ

  LAN  PPP ͳǥ󥿡ͥåȤˤĤʤ "" LAN ³
  ȡƥˤդʧɬפޤե֤
  뤳Ȥޤ˹ͤ褦˶ᤷޤ

  23.  ³Ω塢

  PPP ³Ω顢pppd  /etc/ppp/ip-up åޤΥ
  ץȤ¸ߤƼ¹ԲǽˤʤäƤ PPP ǡϤΥץ
  ¹ԤޤǤ顢ΥץȤ PPP ³Ȥ˼¹Ԥ
  ̤ηϩ䤽¾ɬפ򤹤뤿Υޥɤ񤤤
  СPPP ³ΤӤ˼ưŪ˼¹ԤǤޤ

  /etc/ppp/ip-up̤Υ륹ץȤǹʤΤǡ륹ץ
  ǲǽʤȤϲǤǤޤ(ꤿȤϲǤǤޤ)

  㤨СΥ륹ץȤ sendmail Ȥä mail queue ί
  Ƥ᡼褦ʤȤǽǤ

  Ʊͤˡip-up (pop Ȥä)᡼ꤳ褦ʥޥɤꤷ
  ISP ϤƤ᡼ưŪ˼ꤳळȤǽǤ

  23.1.  ̤ηϩ

  2 Ĥ LAN ³硢'' LAN ظ̤ηϩꤷ
  Ƥɬפޤ /etc/ppp/ip-up ץȤꤹ
  ñǤ礦ˤʤΤϡʣ PPP ³ȤǤ

  /etc/ppp/ip-up Ƥ ppp ³κݤ˼¹Ԥ륹ץȤʤΤǡ³
  ˱ɬפʷϩ˴ؤ륳ޥɤ¹Ԥ褦տ
  ꤷƤɬפޤ

  Τˤ pppd ΥץȤϤѥ᡼Ȥä bash 
  'case' ʸǾʬƤΤǤ礦㤨Сʲ˼
  ϡWAN ³ȻμؤΥͥå³Ȥ櫓뤿Υץ
  Ǥ(ξԤȤƱ ppp ФȤäƤޤ)

  ______________________________________________________________________
  #!/bin/bash
  # pppd ɬפ˱ƥ롼ƥ󥰤ꤹ뤿Υץ
  # Newman campus ؤΥ󥯤ˤΤߥ롼ƥ󥰤ɬ
  #
  # ppp ³κݡΥץȤϰʲΤ褦ʰǸƤӽФ롣

  #       $1      pppd Ȥ󥿡ե̾(㡧ppp3)
  #       $2      tty ǥХ̾
  #       $3      tty ǥХ®
  #       $4      󥿡եΥ IP ɥ쥹
  #       $5      ⡼Ȥ IP ɥ쥹
  #       $6      pppd  ipparam ץǻꤹѥ᡼
  #
  case "$5" in
  # Newman Campus ΥФؤΥ롼ƥ󥰤
          202.12.126.1)
                  /sbin/route add -net 202.12.126.0 gw 202.12.126.1
  # ᡼륭塼ίäƤ᡼
                  /usr/sbin/sendmail -q &
                  ;;
          139.130.177.2)
  # 󥿡ͥå³
  # ॵФưƤʤ³˵ươλƱ롣
                  if [ ! -f /var/lock/subsys/xntpd ]; then
                          /etc/rc.d/init.d/xntpd.init start &
                  fi
  # ˥塼Фεư(ưƤʤ)
                  if [ ! -f /var/lock/subsys/news ]; then
                          /etc/rc.d/init.d/news start &
                  fi
                  ;;
          203.18.8.104)
  #
  # Υޥ˥᡼ꤳࡣΥͥåȤIP masqeurade 
  # proxy arp Υ롼ƥ󥰤ˤʤäƤΤǥ롼ƥ󥰤
                  /usr/sbin/sendmail -q &
                  ;;
          *)
  esac
  exit 0
  ______________________________________________________________________

  Newman campus ؤΥץȤ³硢ʲ˼褦ʥ롼ƥ
  󥰥ơ֥뤬ꤵޤ(Υޥϻ䤿Υ륢å PPP 
  з󥤥󥿡ͥå³ޥǤ)줾Υȥ꤬򼨤Υ
  ȤդƤޤ

  ______________________________________________________________________
  [root@kepler /root]# route -n
  Kernel routing table
  Destination     Gateway         Genmask         Flags MSS    Window Use Iface
  # 󥿡ͥåȥȥؤΥۥȥ롼
  139.130.177.2   *               255.255.255.255 UH    1500   0      134 ppp4
  # Newman campus ФؤΥۥȥ롼
  202.12.126.1    *               255.255.255.255 UH    1500   0       82 ppp5
  # μΥͥå LAN ؤΥۥȥ롼
  203.18.8.104    *               255.255.255.255 UH    1500   0       74 ppp3
  # Ƥ 2 ĤΥ륢å PPP Ѳ
  203.18.8.64     *               255.255.255.255 UH    552    0        0 ppp2
  203.18.8.62     *               255.255.255.255 UH    552    0        1 ppp1
  # Newman campus LAN ؤΥͥåȥ롼
  202.12.126.0    202.12.126.1    255.255.255.0   UG    1500   0        0 ppp5
  # ΥͥåȤؤΥ롼(2 ĤϢ³륯饹 C Υͥåȥ
  # ³Ƥޤ)
  203.18.8.0      *               255.255.254.0   U     1500   0     1683 eth0
  # loop back ǥХؤΥ롼
  127.0.0.0       *               255.0.0.0       U     3584   0      483 lo
  # 󥿡ͥåȤؤΥǥեȥ롼
  default         139.130.177.2   *               UG    1500   0     3633 ppp4
  ______________________________________________________________________

  23.2.  e-mail ν

  Ǥ³Ωñ˥᡼륭塼եå夹Ȥˡ
  ǳФ᡼ɤ뤫򼨤ޤ

  WAN ³ξ硢³ LAN ΥͥåȥԤ̤ƱȤ
  뤳ȤǽǤ㤨С桹 WAN ³Ǥ Newman Campus ¦
  /etc/ppp/ip-up ץȤϤΤ褦ˤʤäƤޤ

  ______________________________________________________________________
  #!/bin/bash
  #
  # pppd ɬפʥ롼ƥ󥰾
  # Hedlan Ƥ³ξΤߤɬ
  #
  # ppp ³κݡΥץȤϰʲΤ褦ʰǸƤӽФ롣
  #
  #       $1      pppd Ȥ󥿡ե̾(㡧ppp3)
  #       $2      tty ǥХ̾
  #       $3      tty ǥХ®
  #       $4      󥿡եΥ IP ɥ쥹
  #       $5      ⡼Ȥ IP ɥ쥹
  #       $6      pppd  ipparam ץǻꤹѥ᡼

  case "$5" in
          203.18.8.4)
                  /usr/sbin/sendmail -q
                  ;;
          *)
  esac
  exit 0
  ______________________________________________________________________

  ISP ³ IP ɥ쥹ưŪ˳ꤢƤ PPP ³ȤʤǤ
  ISP Υޥˤ뤢ʤΥ᡼ꤳߤ礬Ǥ礦
  ξ硢Ūˤ POP(Post Office Protocol)ȤޤPOP 
  'popclient' ץǰip-up ץȤꤹ뤳ȤǼư
  뤳ȤǽǤ

  Ŭڤ popclient ư륹ץȤΤߤޤ /etc/ppp/ip-up
  ѰդޤRed Hat Linux äƤåץȥå׵(ιԤɬʤ
  )ǤϡΤ褦ˤƤޤ

  ______________________________________________________________________
  popclient -3 -c -u hartr -p <password> kepler.hedland.edu.au |formail -s procmail
  ______________________________________________________________________

  ˥塼ˤĤƤƱͤΤȤ slurp ʤɤΥץȤȤǲǽ
  Ǥip-up ץȤñʤ bash ץȤʤΤ PPP ³Ω
  äȤԤ٤ɤʻŻǤ⤵뤳ȤǽǤ

  24.  󥯤νλ

  롼ȸ¤ǻȤС¸ /usr/bin/ppp-off ץȤʤ³
  λǤϤǤѹȤϡsendmail ᡼žƤ
  ϤФ餯λԤĤ褦ˤ뤰餤Ǥ礦

  ϽȤƻĤƤޤ礦

  ⤦ġ³λˤΤ߼¹Ԥ륹ץȤ뤳ȤǤ
  ޤΥץȤ /etc/ppp/ip-down ǤΥץȤ
  /etc/ppp/ip-up ץȤԤʤäѹ줵뤳ȤǽǤ

  25.  LAN Υ롼ƥ󥰤˴ؤ

  LAN ³ʤ PPP Ȥ硢(ͥåȥ󥿡ե
  ͳ³) LAN ѥåȤ³ PPP Ф餽
  ѥåȤηϩˤĤƹθɬפޤ

  ΥǤϷϩܤҲ𤹤ĤϤޤ - ñ
  (Ū)ϩľҲ𤹤αޤ

  ϩˤĤƤ褯Τʤ Linux Network Administrator
  Guide(NAG)ܤ̤褦˶ᤷޤޤO'Reilly 
  Ƥ "TCP/IP ͥåȥ"⤳ʬ䤹äƤޤ

  ŪʷϩδŪʥ롼ϡǥեȥ롼ȤۤȤɤΥͥåȥ
  ɥ쥹ؤƤ롢ȤΤǤʳΥͥåȥɥ
  ˤϤ줾˥롼ƥ󥰾Ͽޤ

  ǰͣξϥ󥿡ͥåȤ³Ƥʤ LAN ˤĤʤä
   Linux ޥ󤬤äơLAN ȤĤòͳǥ󥿡ͥå
  ĿŪѤȤǤ

  ޤͥåȤؤηϩǥեȥ롼ȤǤϤʤΥͥåȥ
  ɥ쥹ꤹ롼ƥ󥰤ˤʤäƤ뤳ȤǧƤ

   route ޥɤǥåޤroute -n ȤаʲΤ褦ʥ
  ޥɤɽޤ

        [root@hwin /root]# route -n
        Kernel routing table
        Destination     Gateway         Genmask         Flags MSS    Window Use Iface
        loopback        *               255.255.255.0   U     1936   0       50 lo
        10.0.0.0        *               255.255.255.0   U     1436   0      565 eth0

  ⤷ͥåȥ󥿡ե(eth0)ǥեȤηϩˤʤäƤ
  (eth0 ιԤκǽιԤ "default" ˤʤޤ)ͥåȤν
  ץȤơǥեȤηϩǤϤʤΥͥåȥɥ쥹
  ؤ褦˽ޤ(ܺ٤ Net2 HOWTO  NAG 򸫤Ƥ)

  ƤСpppd ³ǥեȤηϩˤ뤳ȤǽǤ

        [root@hwin /root]# route -n
        Kernel routing table

        Destination     Gateway         Genmask         Flags MSS    Window Use Iface
        10.144.153.51   *               255.255.255.255 UH    488    0        0 ppp0
        127.0.0.0       *               255.255.255.0   U     1936   0       50 lo
        10.1.0.0        *               255.255.255.0   U     1436   0      569 eth0
        default         10.144.153.51   *               UG    488    0        3 ppp0

  Τ褦 PPP (10.144.153.51)ؤ ppp0 ͳۥȥ롼
  Ͽ졢 PPP Ф򥲡ȥˤ褦˥ǥեȤηϩ
  Ƥޤ

  äʣʷϩ椬ɬפʾ硢˽Ҥ٤ɥȤɤߡʤ
  ΥȤΥѡȤ˿ҤͤƤ

  ³Ƥ LAN 롼ˤĤʤäƤ硢ΥȤΤ礭
  ͥåȥ³뤿ΥȥꤵƤϤǤ
  Ǥ⡢ǥեȥ롼Ȥ PPP 󥿡եˤơ¾ηϩ
  Ϥ줾Υͥåȥظ뤳ȤǽǤ

  25.1.  ƥˤĤƤΥ

  ¸ LAN ³Ƥ Linux ޥ PPP ͳǥ󥿡ͥåȤ
  ³硢 LAN ΤŪ˥󥿡ͥåȤزƤ뤳Ȥ
  ʤޤ - ˤϥåδޤPPP ͳǥ󥿡ͥ
  Ȥ³ޤˤϤʤȿΥͥåȥԤ̤
  ƥ˴ؤˤǧ褦˶ᤷޤ⤷ʤ PPP 
  ³ͳƤʤΥȤ⤵СƱνͥåȥ/ƥ
  ԤŪˤʤ뤳ȤǤ礦˿
  ޤ

  LAN 򥤥󥿡ͥåȤ³ˤϡưŪ IP ɥ쥹Ѥ³
  ꡢ˿줿 O'Reilly  "Building Internet Firewalls" ɤǡ
  ³ˡͤƤ

  26.  ɤ褦ʤȤˡ

  PPP ³ޤʤ硢ʸɤǡƤåľ
  ƤƱ "chat -v..." ޥɤνϤ "pppd -d" νϤ
  ƥΥե뤫Ĵ٤Ƥߤޤ礦

  PPP ˴ؤɥȤ FAQ ʤɡʸǾҲ𤷤Ƥʸˤ
  ̤ƤߤƤ

  Ǥ⤦ޤԤʤ硢comp.os.linux.misc 
  comp.os.linux.networking Υ˥塼롼פƤƤߤޤ礦
  Υ˥塼롼פ comp.protocols.ppp Ʊ͡PPP ˾ܤͤ褯
  Ǥޤ

  䰸Ƥ e-mail 򤷤ƤäƤ빽ǤˤŻ()
  ΤǡФ䤯ֻǤ뤫ݾڤθ¤ǤϤޤ(뤤
  ʤ⤷ޤ)ϻŻ٤ĿŪξ˰¸
  ޤ

  դƤޤʥǥХåϤ˥塼롼פƤ
  䤢ƤäƤʤǤ ԤϥͥåȥӰϲǤ
  Ԥ /dev/null ˤʤޤ(䤬äˤνϤ򸫤Ƥۤ
  ʳ)

  27.  ³ޤäƤ鵯䤹

  ΰĤϡ¿ΥӥץХ³Ѥοեȥѥ
  ݡȤƤʤȤǤ(ŵŪ) Microsoft
  Windows Ǹޤ :-( äơ¿ΥץХμ
  Unix(Linux)ΤȤΤޤ󡣤Ǥ顢餫νϤۤȤ
  ̵ȳи礷ƤƤ

  󡢸ĿŪʷ Linux 򶵤Ƥ뤳ȤǽǤ(ISP μ
  ôԤϥ󥿡ͥåȤΤȤˤϾܤ Linux ޥ
  äƤǽ⤢ޤ)

  27.1.  PPP Ф³Ǥޤ

  PPP ³ĤʤäơPPP Ф IP ֹꤷ ping Ǥ뤱
  (PPP Ф IP ֹ ifconfig ޥɤ ppp0  "remote" ɽ
  Ƥ IP ֹǤ)ؤϹԤʤȤǤ͡

  ޤ /etc/resolv.conf ǥ͡ॵФ˻ꤷ IP ֹ ping Ƥߤ
  줬ޤԤ褦ʤСPPP ФإѥåȤϤƤ
  (PPP Фȥ͡ॵФƱޥξϽ)˥ӥץ
  ХΥޥۥ̾(FQDN)ǻꤷ ping Ƥߤޤ礦㤨С

        ping my.provider.net.au

  Ǥϥʾ硢ۥ̾ IP ɥ쥹ؤѴޤäƤޤ
  ¿ʬ /etc/resolv.conf  typo ΤǤ礦/etc/resolv.conf
  տåơץХ鶵Ƥä̤ˤʤäƤ뤫
  åƤְ㤤դʤСץХä򤫤
  ơ񤭤Ĥ IP ֹ椬ǧƤ

  Ǥʤ(ץХΥ͡ॵФƯƤ뤳Ȥǧ
  )ɤ̤ΤȤ꤬ΤǤ礦ƥ꤬
  ܤåƤߤ뤳Ȥ򤪴ᤷޤ(ä˥եѡߥå
  )

  ǤץХΥ͡ॵФ IP ֹǤ ping Ǥʤ硢͡
  ॵФߤޤäƤ뤫(äݤƳǧƤߤޤ)ץХ¦η
  ϩ꤬ΤΤޤ󡣤ˤĤƥץХ˺ٳǧ
  Ƥߤޤ礦

  ĤβǽȤƤϡ³ Linux Ȥä PPP Ф IP
  forwarding ץ󤬥ͥȤߤޤƤʤΤΤޤ

  ŪʥƥȤƤϡäȤ褯ȤƤ Microsoft Windows
  ѤΥեȥȤäƻƤߤ뤳ȤǤƱȤǡ̤ OS
  ʤФޤ³Ǥ褦ʾ硢Ϥʤ Linux ˤäơ
  ӥץХ¦ǤϤޤ

  27.2.  e-mail ФǤȤޤ

  ưŪ IP ɥ쥹γƤƤ硢줬̤Ǥ˿
  ֳƼ掠ӥפ

  27.3.  ʤ¾οͤ finger  WWW, gophertalk ǻΥޥ³Ǥ
  ʤΤǤ礦

  ưŪ IP ɥ쥹γƤƤ硢줬̤Ǥ˿
  ֳƼ掠ӥפ

  28.  ưŪ IP ֹǥ󥿡ͥåȤγƼ掠ӥȤˤ

  IP ֹ³٤ưŪ˳ꤢƤƤäƤ(̤ʧ
  ¤ꡢ¿ΥӥץХưŪ IP ɥ쥹γƤ
  ޤ)¿¤뤳Ȥи礷ʤФޤ

  ξǤ⳰ظƤΥꥯȤʤưޤʤ
  sendmail ͳǥ᡼ޤftp ǥեäƤꡢ¾
  ޥΥ桼 finger ꡢweb 򸫤ꤹ뤳ȤʤɤϲǽǤ

  ³Ƥʤ֤ǡʬΥޥ˼ꤳǤ e-mail ֻ
  ȤǽǤξ硢Ф᡼ϼ ISP ³ޤǥ᡼
  륭塼ίäƤޤ

  ʤΥޥ 24 ֥󥿡ͥåȤ³Ƥ櫓ǤϤ
  ³٤Ʊ IP ֹ餦櫓Ǥ⤢ޤ󡣤Ǥ顢ľܤ
  ʤΥޥ e-mail Ȥ뤳ȤԲǽǡweb  ftp ΥФ
  Ѱդͧã˥Ƥ餦褦ʤȤ⺤ǤʤΥޥ
  ϥˡ IP ֹ椬դƤʤᡢ󥿡ͥåȤ¦鸫
  ꡢʤΥޥϤĤ¸ߤƤΤȤϸʤޤ(̤Υޥ
  Ʊ IP ɥ쥹ꤢƤƤ뤳Ȥ˺ʤ)

  WWW (䤽¾Υ)ꤷȤƤ⡢ʤΥޥ󤬥
  ͥåȤ³ƤꡢλǳꤢƤƤ IP ֹ椬ʬ
  ʤ¤ꡢï⤢ʤΥޥΤ뤳ȤǤޤͧͤˤʤΥޥ
  󤬤ɤ IP ֹ³Ƥ뤫Τ餻뤿ˤϡä򤫤뤳
  Ȥ e-mail(ץХ륢ȤѰդƤ)ץ
  Х֤Ƥ ".plan" եΤ餻뤳Ȥޤǡޤޤˡ
  ޤ

  ۤȤɤΥ桼ˤϤäˤϤʤʤǤ礦̤οͤɬ
  ȤΤ e-mail (ץХΥȤǲǽǤ)WWW 
  ftp Ȥä󥿡ͥåȾγƼ掠ӥѤ뤳ȤǤ顣
  ʤΥФ³ɬפ硢ꤷ IP ֹꤢ
  ƤƤ餦ɬפޤ뤤ϡǼˡҥȤˤơʬ
  ǤȯƤ

  28.1.  e-mail 

  ưŪ IP ɥ쥹γƤȤǤꤷƤХ
  ˺ e-mail ͳ˽ФȤϲǽǤsendmail Ϥä
  ݤʺȤǤǤ顢ʸǤ sendmail ˡˤĤƤ
  줺ˡ³ ISP Υ᡼륵Ф򤢤ʤΥ᡼Υ졼ۥ
  (sendmail.cf  DS ץ)ȤƻȤˡΤޤ(sendmail
  ξܺ٤ˤĤƤ sendmail ʸ sendmail ȶۤƤ
   m4 꽸ɤǤɬפʾϳμ¤ˤˤϤ
  )

  Sendmail ˤĤƤͥ줿ܤǤƤޤ(O'Reilly and
  Associates ΥХ֥뤬ͭ̾Ǥ)ۤȤɤΥ桼ˤȤäƤϾܤ
  Ǥ礦

  sendmail ꤹСФ塼ίä᡼ PPP ³
  ΩȤ褦ꤷʤǤ礦Τˤ
  /etc/ppp/ip-up ץȤ

        sendmail -q &

  Ȥޥɤɲäޤ

  ưŪ IP ƤǤƤ᡼ȤݤȤʤޤ
  褹ˤϡ

  o  ᡼ץ(MUA)ꤷơֿ᡼ "reply to" إå
     ǻꤷ ISP Υɥ쥹褦ˤˡ
     ǽʤСFROM ԤΥɥ쥹 ISP Υɥ쥹ˤƤ
     礦

  o  Ƥơpopclient ץȤäƥӥץХ
     ᡼ꤳߤޤ

  popclient Ȥäƥ᡼ꤳॳޥɤɬפʤ
  /etc/ppp/ip-upץȤȤߤ³Ω˼ưŪ˹Ԥʤ
  ȤǽǤ

  28.2.  ʥ͡ॵФ

  ͡ॵФ³ ISP ꤷΤȤϤޤ󤬡
  ˥å嵡ǽΤߤä()͡ॵФ ip-up
  ץȤΩ뤳ȤǽǤ(å嵡ǽ
  ߤä)͡ॵФΩϡĹ³֤δ֤˲٤ⷫ
  ֤ƱȤ˥褦ʾ˻(Ӱ)ˤʤ뤳
  Ǥ

  å嵡ǽΤߤȤ͡ॵФ DNS ϤñǤ
  (named.boot ե "forwarders"Ԥ ISP  DNS ꤹ
  )O'Reilly  "DNS and Bind"ɬפʤƤ⤷Ƥޤ

  ޤDNS-HOWTO ΩĤǤ礦

  ͥåȤˤĤưå嵡ǽΤߤȤΥ͡ॻ
  ФΩˤ ISP ϢƵĤ餦褦ˤƤ
  ꤵС DNS 夲Ȥ ISP ˤϲαƶ
  ܤޤ󤬡ְä硢ȥ֥뤬뤳Ȥ⤢ޤ

  29.  PPP Ф

  ˽Ҥ٤Ƥ褦ˡPPP ФꤹˡϤĤ⤢ޤ
  ǾҲ𤹤Τ(Cyclades Υޥݡȥꥢ륫ɤȤä)䤬Ȥ
  ƤˡǡòϰĤֹʣβ³꡼
  뼰ˤʤäƤޤ

  ǾҲ𤷤ˡ˾ʤСҼʬήˡǤäƤߤƤ
   HOWTO ξΥСǤϤˡҲ𤷤
  ȻפäƤΤǡȤˡˤĤƶƤ

  Τ Linux  PPP ФȤꤹäΤߤǡ̤ʥ
  ߥʥ륵ФˤĤƤʤɤ()ĤϤޤ

  ޤ shadow password Ȥޤ(ĤäƤߤ
  ΤǤ)Ǥ顢ʲä shadow password ĶˤĤƤ
  ڤƤϤޤޤ

  29.1.  ͥΥѥ

  ޤǤ˽Ҥ٤ƤͥΥѥ䥫ͥΥС pppd 
  СƤƤϤޤޤξϤǤϺޤǤ˽Ҥ٤Ƥ
  Ƥܤ̤줿ΤȤäʤޤ

  PPP Ѥˤϥͥ IP forwardǽȤߤळȤɬܤǤɬ
  פʤФ¾εǽ(㤨 IP ե IP ƥ
  ʤ)ȤߤǤ

  ޥݡȥꥢ륫ɤȤ硢ɬפʥɥ饤ФȤߤΤ˺
  ʤ褦ˡ

  29.2.  Хƥγ

  òͳ PPP( SLIP)³Ƥ桼Ѥ˥桼
  Ȥȥ륢Ȥ桼̾/ѥɤΥڥȤä󶡤ޤ
  Ƥ(桹ˤȤäͭʤȤ)桼ɬפˤʤΤϰĤΥ
  ȤΤߤǡΥȤƤ³ԤȤˤʤޤ

  䤿϶鵡ؤοʹ֤ǡåդΥ˲ݶ⤷ޤ󡣤Ǥ
  顢³֤δ³ˤѤ蘆ʤȤˤޤ

  󥿡ͥåȤȻ䤿ΥȤδ֤ˤϥեߤե
  òͳǥƤ桼إ
  Τ¤ޤ(ºݤˤˤ⤤Ĥե뤬ΤǤ
  ˤĤƤɬפʤΤǿޤ)

  桼 PPP ³ƤȤƤ(ͭʥȤ
  桼Ǥ)

  o  ꡼ˤʤäƤֹä򤫤(ϰĤֹʣ
     ΥǥबĤʤäƤꡢäƤäϺǽζƤ
     ³ޤ)

  o  桼̾ȥѥɤȤäƥ

  o  ץץȤ ppp ޥɤȤäƥФ PPP ư

  o  PC ¦ PPP ư(桼¦ Windows Ǥ DOS Ǥ⡢Linux Ǥ MAC
     OS Ǥ⡢Ǥ⹽ޤ)

  ФϤ줾/etc/ppp/options.ttyXX եȤäơ줾
  ݡȤȤ˰ۤʤ IP ֹ³˥åȤޤ(³¦餹
  ưŪ IP ꤢƤˤʤޤ)Ф³Ƥ륯饤Ȥ
  proxyarp 롼ƥ󥰤ȤäƷϩޤ(pppd Υץǻꤷ
  ޤ)Ƥ routed  gated פˤʤޤ

  桼³ڤä硢pppd ³Ǥǧƥǥ˲ڤ
  ̿Ʊ PPP ³⽪λ褦ˤޤ

  29.3.  եȥ򽸤

  ʲΤ褦ʥեȥɬפǤ

  o  LinuxɬפʵǽȤߤǤȡ

  o  ͥΥС˹ä pppd

  o  ǥȤ³򤭤Ƚ 'getty' ץࡣ

     䤿 getty_ps2.0.7h ȤäƤޤmgetty 褦˻
     ޤʹȤˤ mgetty  pap/chap Ȥä³
     ǧ(pap  Windows95 ɸˤʤäƤޤ) pppd ưŪ˵
     ư뤽ʤΤǤޤȤϤޤ

  o  òͳ³Ƥ桼Ȥ DNS С
     ǽʤм DNS ФΩޤ礦

  29.4.  ɸŪ(ͳ)³

  PPP Фꤹ Linux ä뤳Ȥǧ
  Ƥ

   HOWTO ǤϤʬϰޤ getty ΥɥȤ
  serial HOWTO  

  29.5.  PPP Υץե

  /etc/ppp/options ˤƤΥݡȤ˶̤륪ץꤷޤ
  ȤäƤ륪ץϡ

  ______________________________________________________________________
  asyncmap 0
  netmask 255.255.254.0
  proxyarp
  lock
  crtscts
  modem
  ______________________________________________________________________

   - 䤿(Ū)ϩꤷƤޤ - äƥǥեȥ롼
  ȥץꤷƤޤ󡣤ʤʤ顢(PPP ФˤȤä)ɬפʵ
  ǽ ppp 饤ȤΥѥåȤ LAN/Internet 
  LAN/Internet ΥѥåȤ򥯥饤ȤȤ
  

  ΤɬפʤΤϥ饢ȥޥؤΥۥȤȤƤηϩpppd Ϳ
   'proxyarp' ץǤ

  proxyarp ץꤹ(ä٤Ȥ) PPP Ф arp ơ
  ֥ˡPPP 饤ȰƤΥѥåȤƻäơפȤ̣ˤ
  륨ȥ꤬ޤ줬 PPP 饤Ȥؤηϩ
  äȤñˡǤʤ顢ˡǤ 2 Ĥ LAN Ӥ
  뤳ȤϤǤޤ󡣤Τˤ proxy arp ǤϤʤͥåȥ
  롼ȤƤɬפޤ

  òͳ³Ƥ桼ưŪ IP ɥ쥹ꤢƤ뤿
  ϡݡȤȤ IP ֹꤢƤƤޤΤˤ
  /etc/ppp/options.ttyXX ݡȤȤ˺äƤޤ

  Υեˤϥ(¦) IP ֹȤΥݡȤ˳ꤢƤ
  IP ֹ򵭽ҤƤޤ㤨С

  ______________________________________________________________________
  kepler:slip01
  ______________________________________________________________________

  Υեˤͭʥۥ̾Ǥ뤳ȤդƤ(
  Ƥ IP ֹ˳ˤȤʤޥȥͥåȥǥХΤߤǤ
  ۥ̾Ͽ̣Τǵ䤹Ǥ礦)

  29.6.  pppd 桼(ޤ)ư褦ꤹ

  ppp ³򳫻ϤݤˤϥͥΥǥХ(ͥåȥ󥿡ե
  )ꤷͥΥ롼ƥ󥰥ơ֥ʤФޤ
  Τǡ롼ȸ¤ɬפˤʤޤ
  ʤȤˡpppd  uid  root ˤƤְפʤ褦˥ǥ󤵤
  ƤΤǡ

  ______________________________________________________________________
  chmod u+s /usr/sbin/pppd
  ______________________________________________________________________

  Ƥޤ

  Υե ls -l ȼΤ褦ɽޤ

  ______________________________________________________________________
  -rwsr-xr-x   1 root     root        74224 Apr 28 07:17 /usr/sbin/pppd
  ______________________________________________________________________

  ʤäƤʤȥ桼 ppp ³򳫻Ϥ뤳ȤǤޤ

  29.7.  pppd ѤΥꥢ

  ³Ƥ桼ʬ䤹褦ˡ/etc/bashrc ˥ꥢꤷ
  ơ󤹤аĤΥޥɤ ppp ưǤ褦ˤƤ
  ޤ礦

  䤿ϤꥢäƤޤ

  ______________________________________________________________________
  alias ppp="exec /usr/sbin/pppd -detach"
  ______________________________________________________________________

  Υꥢΰ̣

  o  exec : ưƤץ(Ǥϥ)ؤơꤷ
     ץư

  o  pppd -detach : pppd  fork ƥХå饦ɤʤ褦ˤ
     ƵưƤ pppd λ(PPP ³˵ư)
     ƽλޤ

     桼󤷤ƤС'w' ޥɤǰʲΤ褦ɽ
     

  ______________________________________________________________________
    6:24pm  up 3 days,  7:00,  4 users,  load average: 0.05, 0.03, 0.00
  User     tty       login@  idle   JCPU   PCPU  what
  hartr    ttyC0     3:05am  9:14                -
  ______________________________________________________________________

  Ǥ˸ä̤ꡢñǴŪ PPP Хƥब
  夬ޤ

  30.  PPP ̥ǥ(ꥢľ)ǻȤˤ

  ϴ֤˥ǥब̵ʬäȴñǤ

  ޤ''ȤʤޥӡꥢݡȤ getty 
  ơ minicom ʤɤ̿եȤȤäƥꥢݡȤ'饤'
  ³Ǥ뤫ƥȤޤ

  ǽ뤳ȤǧǤ getty ϺƤޤäƹޤ󡣤ä
  ⡢òξΤ褦ˡ桼̾ȥѥɤȤä³ǧڤ
   getty ĤƤޤꥢľ뤹褦ʾ硢
  ΥޥȤܤϤϰϤˤϤʤΤǡ̤äǧڤɬפ
  ʤǤ礦

  ˡ¦ getty 򳰤ƱˡΥޥΥꥢݡȤ
  setserial ꤵƤ뤫ǧƤ

  Υޥ pppd ưǤ㤨 /dev/cua4 ³
  Ƥ硢ΥޥǰʲΥޥɤ¹Ԥޤ

  ______________________________________________________________________
  pppd -detach crtscts lock <local IP>:<remote IP> /dev/cua4 38400 &
  ______________________________________________________________________

  ³Ωޤ - ǤϷϩꤵƤ
  Υޥ ping ³Ƥ뤳Ȥǧפʤ褦ʤ
  ö pppd ץ kill ³λޤ

  ɬפȤʤϩϲ򤷤ˤäưۤʤޤΤ
  ʷ֤³򤹤硢ŪΤΥޥ󤬥ͥå(Ȥ
  )³ƤϤʤΤǡPPP Фȥ饤Ȥηηϩ
  ɬפˤʤǤ礦

  Ǥ顢ͥåȤ³줿ޥǤ pppd 򤳤Τ褦˵ư
  

  ______________________________________________________________________
  pppd -detach crtscts lock proxyarp <local IP>:<remote IP> /dev/cua4 38400 &
  ______________________________________________________________________

  ⤦ΥޥǤ

  ______________________________________________________________________
  pppd -detach crtscts lock defaultroute <local IP>:<remote IP> /dev/cua4 38400 &
  ______________________________________________________________________

  ȤޤʣΥͥåȥ(ꥢ³Ȥäơ)Ĥʤ䡢
  ʣʷϩ椬ɬפʾ硢Ҥ褦 /etc/ppp/ip-up Ȥä
  ꤷƤ

  Robert Hart
  Port Hedland, Western Australia
  August 1996

