Chapter 10 PPP

10.1. ppp ¤¬Æ°¤­¤Þ¤»¤ó¡£¤É¤³¤ò´Ö°ã¤¨¤Æ¤¤¤ë¤Î¤Ç¤·¤ç¤¦?
10.2. ppp ¤ò¼Â¹Ô¤¹¤ë¤È¥Ï¥ó¥°¤·¤Þ¤¹
10.3. ppp ¤¬ -auto ¥â¡¼¥É¤Ç¥À¥¤¥¢¥ë¤·¤Æ¤¯¤ì¤Ê¤¤
10.4. No route to host ¤È¤Ï¤É¤¦¤¤¤¦°ÕÌ£¤Ç¤¹¤«?
10.5. 3 ʬ¤Û¤É·Ð¤Ä¤ÈÀܳ¤¬ÀÚ¤ì¤Æ¤·¤Þ¤¦
10.6. Éé²Ù¤¬¹â¤¤¤ÈÀܳ¤¬ÀÚ¤ì¤Æ¤·¤Þ¤¦
10.7. Àܳ¤¬¥é¥ó¥À¥à¤ËÀÚ¤ì¤Æ¤·¤Þ¤¦
10.8. Àܳ¤¬ÉÔµ¬Â§¤Ë¥Ï¥ó¥°¥¢¥Ã¥×¤·¤Æ¤·¤Þ¤¦
10.9. ²óÀþ¤Î¸þ¤³¤¦Â¦¤Ç¤ÎÈ¿±þ¤¬¤Ê¤¤
10.10. ppp ¤¬¥Ï¥ó¥°¥¢¥Ã¥×¤¹¤ë
10.11. Login OK! ¤Î¥á¥Ã¥»¡¼¥¸¤¬½Ð¤¿¸å¡¢²¿¤âµ¯¤³¤é¤Ê¤¤
10.12. ¤Ç¤â¤Þ¤À magic is the same ¤È¤¤¤¦¥¨¥é¡¼¤¬½Ð¤ë
10.13. Àܳ¤¬ÀÚ¤ì¤ë¤Þ¤Ç LCP ¤Î¥Í¥´¥·¥¨¡¼¥·¥ç¥ó¤¬Â³¤¯¤Î¤Ç¤¹¤¬¡£
10.14. ppp ¤¬Àܳľ¸å¤Ë¸Ç¤Þ¤Ã¤Æ¤·¤Þ¤¦
10.15. ppp ¤ÎÆâÉô¤Ç¥·¥§¥ë¤òµ¯Æ°¤·¤è¤¦¤È¤¹¤ë¤È¸Ç¤Þ¤Ã¤Æ¤·¤Þ¤¦
10.16. ¥Ì¥ë¥â¥Ç¥à¥±¡¼¥Ö¥ë¤ò»ÈÍѤ·¤Æ¤¤¤ë¤È¤­¡¢ ppp ¤¬½ªÎ»¤·¤Ê¤¤
10.17. ppp ¤ò -auto ¥â¡¼¥É¤Çư¤«¤¹¤È¡¢ ¾¡¼ê¤Ë¥À¥¤¥¢¥ë¤¹¤ë¤³¤È¤¬¤¢¤ë
10.18. CCP ¥¨¥é¡¼¤È¤Ï¤É¤¦¤¤¤¦°ÕÌ£¤Ç¤¹¤«
10.19. ¥Õ¥¡¥¤¥ëžÁ÷¤ÎÅÓÃæ¤Ç¡¢ppp ¤¬ IO ¥¨¥é¡¼¤ò½Ð¤·¤Æ¸Ç¤Þ¤Ã¤Æ¤·¤Þ¤¦
10.20. ¤É¤¦¤·¤Æ ppp ¤ÏÀܳ®ÅÙ¤ò¥í¥°¤Ë»Ä¤µ¤Ê¤¤¤ó¤Ç¤·¤ç¤¦?
10.21. »ä¤Î chat ¥¹¥¯¥ê¥×¥È¤Ç¤Ï \ ¤È¤¤¤¦Ê¸»ú¤ò PPP ¤¬²ò¼á¤·¤Æ¤¯¤ì¤Þ¤»¤ó¡£
10.22. ppp ¤¬ segmentation fault ¤Ë¤Ê¤ë¤Î¤Ç¤¹¤¬¡¢ ppp.core ¥Õ¥¡¥¤¥ë¤¬¤¢¤ê¤Þ¤»¤ó
10.23. auto ¥â¡¼¥É¤Ç¥À¥¤¥¢¥ë¤ò¤¹¤ë¤è¤¦¤Ê¥×¥í¥»¥¹¤¬Àܳ¤µ¤ì¤Ê¤¤¡£
10.24. ²¿¸Î¤Û¤È¤ó¤É¤Î¥²¡¼¥à¤¬ -nat ¥¹¥¤¥Ã¥ÁÉÕ¤­¤À¤Èư¤«¤Ê¤¤¤ó¤Ç¤¹¤«?
10.25. Í­ÍѤʥݡ¼¥ÈÈÖ¹æ¤Î¥ê¥¹¥È¤Ï¤¢¤ê¤Þ¤»¤ó¤«?
10.26. FCS ¥¨¥é¡¼¤Ã¤Æ²¿?
10.27. ¥²¡¼¥È¥¦¥§¥¤¤Ç PPPoE ¤ò¼Â¹Ô¤¹¤ë¤È MacOS ¤ä Windows 98 ¤È¤ÎÀܳ¤¬¥Õ¥ê¡¼¥º¤·¤Æ¤·¤Þ¤¦¤Î¤Ç¤¹¤¬¡¢ ¤³¤ì¤Ï¤Ê¤¼¤Ê¤Î¤Ç¤·¤ç¤¦¤«?
10.28. ¤É¤ì¤Ë¤âÅö¤Æ¤Ï¤Þ¤é¤Ê¤¤! ¤É¤¦¤·¤¿¤é¤¤¤¤¤Î?

10.1. ppp ¤¬Æ°¤­¤Þ¤»¤ó¡£¤É¤³¤ò´Ö°ã¤¨¤Æ¤¤¤ë¤Î¤Ç¤·¤ç¤¦?

¤Þ¤º ppp(8) ¤Î¥Þ¥Ë¥å¥¢¥ë¤È¡¢ FreeBSD ¥Ï¥ó¥É¥Ö¥Ã¥¯¤Î¡ÖPPP¡×¤òÆÉ¤ó¤Ç¤ß¤Þ¤·¤ç¤¦¡£ ¼¡¤Ë¡¢

set log Phase Chat Connect Carrier lcp ipcp ccp command

¤È¤¤¤¦Ì¿Îá¤ò ppp ¤Î¥³¥Þ¥ó¥É¥×¥í¥ó¥×¥È¤ËÂФ·¤ÆÂǤÁ¹þ¤à¤«¡¢ ÀßÄê¥Õ¥¡¥¤¥ë /etc/ppp/ppp.conf ¤Ë²Ã¤¨¤Æ (default ¥»¥¯¥·¥ç¥ó¤ÎÀèÆ¬¤Ë²Ã¤¨¤ë¤Î¤¬°ìÈÖÎɤ¤¤Ç¤·¤ç¤¦) ¥í¥°¤òÍ­¸ú¤Ë¤·¤Æ¤ß¤Æ¤¯¤À¤µ¤¤¡£ ¤½¤ÎºÝ¡¢ /etc/syslog.conf (syslog.conf(5) »²¾È) ¤Ë

!ppp
*.*              /var/log/ppp.log

¤È½ñ¤«¤ì¤¿¹Ô¤¬´Þ¤Þ¤ì¤Æ¤¤¤ë¤«¡¢¤Þ¤¿¡¢ /var/log/ppp.log ¤¬Â¸ºß¤·¤Æ¤¤¤ë¤«¤É¤¦¤«³Î¤«¤á¤Æ¤ª¤¤¤Æ¤¯¤À¤µ¤¤¡£ ¤µ¤Æ¡¢¤³¤ì¤Ç²¿¤¬µ¯¤­¤Æ¤¤¤ë¤Î¤«ÆÍ¤­»ß¤á¤ë¤¿¤á¤Ë¡¢ ¥í¥°¥Õ¥¡¥¤¥ë¤«¤é¤¿¤¯¤µ¤ó¤Î¾ðÊó¤òÆÀ¤é¤ì¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤·¤¿¡£ ¥í¥°¤ËÌõ¤Îʬ¤é¤Ê¤¤Éôʬ¤¬¤¢¤Ã¤Æ¤â¿´ÇÛ¤´ÌµÍÑ¡£ ¤¢¤Ê¤¿¤¬½õ¤±¤òµá¤á¤¿Ã¯¤«¤Ë¤È¤Ã¤Æ¤Ï¡¢ ¤½¤ÎÉôʬ¤¬°ÕÌ£¤ò¤Ê¤¹¾ì¹ç¤¬¤¢¤ë¤Î¤Ç¤¹¡£

ÌõÃí: ¥í¥°¤Î¼èÆÀ¤Ë syslog ¤ò»ÈÍѤ¹¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿¤Î¤Ï 2.2.5 °Ê¹ß¤«¤é¤Ç¤¹¡£

»ÈÍÑÃæ¤Î ppp ¤Î¥Ð¡¼¥¸¥ç¥ó¤Ç set log Ì¿Îá¤ò²ò¼á¤·¤Ê¤¤¾ì¹ç¤Ï¡¢ºÇ¿·ÈǤò¥À¥¦¥ó¥í¡¼¥É¤¹¤Ù¤­¤Ç¤¹¡£ FreeBSD ¤Î 2.1.5 °Ê¹ß¤Ç¥Ó¥ë¥É¤Ç¤­¤Þ¤¹¡£

10.2. ppp ¤ò¼Â¹Ô¤¹¤ë¤È¥Ï¥ó¥°¤·¤Þ¤¹

¥Û¥¹¥È̾¤Î²ò·è¤¬¤¦¤Þ¤¯¤¤¤Ã¤Æ¤¤¤Ê¤¤¤Î¤Ç¤·¤ç¤¦¡£¤Þ¤º¡¢ ¥ê¥¾¥ë¥Ð (resolver) ¤¬ /etc/hosts¤ò»²¾È¤¹¤ë¤è¤¦¤Ë¡¢ /etc/host.conf ¤ÎºÇ½é¤Î¹Ô¤Ë host ¤È½ñ¤­¹þ¤ó¤Ç¤¯¤À¤µ¤¤¡£ ¤Ä¤®¤Ë¡¢/etc/hosts ¤Ë»ÈÍѤ·¤Æ¤¤¤ë¥Þ¥·¥ó¤Î¥¨¥ó¥È¥ê¤ò½ñ¤­²Ã¤¨¤Þ¤¹¡£ ¥í¡¼¥«¥ë¤Ç¥Í¥Ã¥È¥ï¡¼¥¯¤ò»ÈÍѤ·¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ï¡¢ localhost ¤Î¹Ô¤ò°Ê²¼¤Î¤è¤¦¤ËÊѹ¹¤·¤Æ¤¯¤À¤µ¤¤¡£

127.0.0.1      foo.bar.com foo localhost

»ÈÍѤ·¤Æ¤¤¤ë¥Û¥¹¥È¤Î¥¨¥ó¥È¥ê¤òÄɲ䷤Ƥ⤫¤Þ¤¤¤Þ¤»¤ó¡£ ¾ÜºÙ¤Ï´ØÏ¢¤¹¤ë¥Þ¥ó¥Ú¡¼¥¸¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡£

10.3. ppp ¤¬ -auto ¥â¡¼¥É¤Ç¥À¥¤¥¢¥ë¤·¤Æ¤¯¤ì¤Ê¤¤

¤Þ¤ººÇ½é¤Ë¡¢¥Ç¥Õ¥©¥ë¥È¥ë¡¼¥È¤¬³ÎΩ¤·¤Æ¤¤¤ë¤«¤É¤¦¤«¥Á¥§¥Ã¥¯¤·¤Æ¤¯¤À¤µ¤¤¡£ netstat -rn (netstat(1) »²¾È) ¤ò¼Â¹Ô¤¹¤ë¤È¡¢°Ê²¼¤Î¤è¤¦¤Ê¾ðÊó¤¬É½¼¨¤µ¤ì¤ë¤Ï¤º¤Ç¤¹¡£

Destination        Gateway            Flags     Refs     Use     Netif Expire
default            10.0.0.2           UGSc        0        0      tun0
10.0.0.2           10.0.0.1           UH          0        0      tun0

¤³¤ì¤Ï¤¢¤Ê¤¿¤¬¥Ï¥ó¥É¥Ö¥Ã¥¯¤ä¥Þ¥Ë¥å¥¢¥ë¡¢ ppp.conf.sample ¤ÎÃæ¤Ç½Ð¤Æ¤¯¤ë¥¢¥É¥ì¥¹¤ò»ÈÍѤ·¤Æ¤¤¤ë¤È²¾Äꤷ¤¿¾ì¹ç¤ÎÎã¤Ç¤¹¡£ ¥Ç¥Õ¥©¥ë¥È¥ë¡¼¥È¤¬³ÎΩ¤·¤Æ¤¤¤Ê¤¤¾ì¹ç¡¢ ppp.conf ¤ÎÃæ¤Î HISADDR ¤¬Íý²ò¤Ç¤­¤Ê¤¤¡¢ ¸Å¤¤¥Ð¡¼¥¸¥ç¥ó¤Î ppp(8) ¤¬Áö¤Ã¤Æ¤¤¤ë²ÄǽÀ­¤¬¤¢¤ê¤Þ¤¹¡£ FreeBSD 2.2.5 ¤è¤êÁ°¤Î¥Ð¡¼¥¸¥ç¥ó¤ËÉÕ°¤·¤Æ¤¤¤¿ ppp ¤ò»ÈÍѤ·¤Æ¤¤¤ë¾ì¹ç¡¢

add 0 0 HISADDR

¤È½ñ¤«¤ì¤¿¹Ô¤ò°Ê²¼¤Î¤è¤¦¤Ë½¤Àµ¤·¤Æ¤¯¤À¤µ¤¤¡£

add 0 0 10.0.0.2

netstat -rn ¤Ç¥Ç¥Õ¥©¥ë¥È¥ë¡¼¥È¤Î¾ðÊó¤¬É½¼¨¤µ¤ì¤Ê¤¤¾ì¹ç¡¢¤â¤¦°ì¤Ä¡¢ /etc/rc.conf (rc.conf(5) »²¾È) (2.2.2 ¤è¤êÁ°¤Î¥ê¥ê¡¼¥¹¤Ç¤Ï /etc/sysconfig ¤È¸Æ¤Ð¤ì¤Æ¤¤¤Þ¤·¤¿) ¤ÎÃæ¤Ç¥Ç¥Õ¥©¥ë¥È¤Î¥ë¡¼¥¿¤ò¸í¤Ã¤ÆÀßÄꤷ¡¢ ppp.conf ¤«¤é

delete ALL

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10.4. No route to host ¤È¤Ï¤É¤¦¤¤¤¦°ÕÌ£¤Ç¤¹¤«?

¤³¤Î¥¨¥é¡¼¤ÏÄ̾ /etc/ppp/ppp.linkup ¤Ë°Ê²¼¤Î¤è¤¦¤Ê¥»¥¯¥·¥ç¥ó¤¬Ìµ¤¤¾ì¹ç¤Ëµ¯¤³¤ê¤Þ¤¹¡£

MYADDR:
  delete ALL
  add 0 0 HISADDR

¤³¤ì¤ÏưŪ IP ¥¢¥É¥ì¥¹¤ò»ÈÍѤ·¤Æ¤¤¤ë¾ì¹ç¡¢ ¤Þ¤¿¤Ï¥²¡¼¥È¥¦¥§¥¤¤Î¥¢¥É¥ì¥¹¤òÃΤé¤Ê¤¤¾ì¹ç¤Ë¤Î¤ßɬÍפÊÀßÄê¤Ç¤¹¡£ ¥¤¥ó¥¿¥é¥¯¥Æ¥£¥Ö¥â¡¼¥É¤ò»ÈÍѤ·¤Æ¤¤¤ë¾ì¹ç¡¢ ¥Ñ¥±¥Ã¥È¥â¡¼¥É¤ËÆþ¤Ã¤¿¸å¤Ç (¥×¥í¥ó¥×¥È¤¬ PPP ¤ÈÂçʸ»ú¤ËÊѤï¤Ã¤¿¤é¥Ñ¥±¥Ã¥È¥â¡¼¥É¤ËÆþ¤Ã¤¿¤·¤ë¤·¤Ç¤¹)¡¢ °Ê²¼¤ÎÌ¿Îá¤òÆþÎϤ·¤Æ¤¯¤À¤µ¤¤¡£

delete ALL
add 0 0 HISADDR

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10.5. 3 ʬ¤Û¤É·Ð¤Ä¤ÈÀܳ¤¬ÀÚ¤ì¤Æ¤·¤Þ¤¦

ppp ¤Î¥¿¥¤¥à¥¢¥¦¥È¤Ï ¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï 3 ʬ¤Ç¤¹¡£ ¤³¤ì¤Ï

set timeout NNN

¤È¤¤¤¦Ì¿Îá¤Ë¤è¤Ã¤ÆÄ´À°¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ NNN ¤Ë¤Ï¡¢ Àܳ¤¬ÀÚ¤ì¤ë¤Þ¤Ç¤Î¥¢¥¤¥É¥ë»þ´Ö¤¬Éÿô¤ÇÆþ¤ê¤Þ¤¹¡£ NNN ¤¬ 0 ¤Î¾ì¹ç¡¢ ¥¿¥¤¥à¥¢¥¦¥È¤Ë¤è¤ëÀÚÃǤϵ¯¤³¤ê¤Þ¤»¤ó¡£ ¤³¤Î¥³¥Þ¥ó¥É¤Ï ppp.conf ¤ËÆþ¤ì¤ë¤³¤È¤â¡¢ ¥¤¥ó¥¿¥é¥¯¥Æ¥£¥Ö¥â¡¼¥É¤Ç¥×¥í¥ó¥×¥È¤«¤éÆþÎϤ¹¤ë¤³¤È¤â ¤Ç¤­¤Þ¤¹¡£ ¥½¥±¥Ã¥È¤òÍѤ¤¤ë telnet(1) ¤« pppctl(8) ¤ò»ÈÍѤ·¡¢ ppp ¥µ¡¼¥Ð¤ËÀܳ¤¹¤ë¤³¤È¤Ë¤è¤Ã¤Æ¡¢ ²óÀþ¤¬¥¢¥¯¥Æ¥£¥Ö¤Ê´Ö¤Ë¸ÂÄꤷ¤Æ¥¿¥¤¥à¥¢¥¦¥È¤Î»þ´Ö¤òÄ´À°¤¹¤ë¤³¤È¤â²Äǽ¤Ç¤¹¡£

ÌõÃí: pppctl ¤Ï 2.2.5R ¤«¤é¤Ç¤¹¡£

¾Ü¤·¤¤¾ðÊó¤Ï ppp(8) ¤Î¥Þ¥Ë¥å¥¢¥ë¥Ú¡¼¥¸¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡£

10.6. Éé²Ù¤¬¹â¤¤¤ÈÀܳ¤¬ÀÚ¤ì¤Æ¤·¤Þ¤¦

Link Quality Reporting (LQR) ¤ÎÀßÄê¤ò¹Ô¤Ã¤Æ¤¤¤ë¾ì¹ç¡¢ ¥Þ¥·¥ó¤ÈÀܳÀè¤Î´Ö¤ÇÈó¾ï¤Ë¤¿¤¯¤µ¤ó¤Î LQR ¥Ñ¥±¥Ã¥È¤¬¼º¤ï¤ì¤Æ¤¤¤ë²ÄǽÀ­¤¬¤¢¤ê¤Þ¤¹¡£·ë²Ì¤È¤·¤Æ ppp ¤Ï²óÀþ¤Î¶ñ¹ç¤¤¤¬°­¤¤¤È¹Í¤¨¡¢ ²óÀþ¤òÀÚÃǤ¹¤ë¤Î¤Ç¤¹¡£2.2.5 ¤è¤êÁ°¤Î¥Ð¡¼¥¸¥ç¥ó¤Î FreeBSD ¤Ç¤Ï LQR ¤Ï¥Ç¥Õ¥©¥ë¥È¤ÇÍ­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡£ ¸½ºß¤Ç¤Ï¥Ç¥Õ¥©¥ë¥È¤Î¾õÂÖ¤Ç̵¸ú¤Ç¤¹¡£ LQR ¤Ï°Ê²¼¤ÎÌ¿Îá¤Ç̵¸ú¤Ë¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

disable lqr

10.7. Àܳ¤¬¥é¥ó¥À¥à¤ËÀÚ¤ì¤Æ¤·¤Þ¤¦

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Âç¿¿ô¤Î¥â¥Ç¥à¤Ç¤Ï¡¢ °ì»þŪ¤Ê¥­¥ã¥ê¥¢¤ÎÁÓ¼º¤ò¤É¤ì¤¯¤é¤¤¤Î»þ´Ö¤Ç¸¡½Ð¤¹¤ë¤«¤ò¡¢ ÀßÄê¤Ç·è¤á¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¤¿¤È¤¨¤Ð USR Sportster ¤Ç¤Ï¡¢S10 ¥ì¥¸¥¹¥¿ ¤ÎÃͤò 10 Çܤ·¤¿Éÿô¤¬¤½¤ÎÃͤˤʤê¤Þ¤¹¡£ ¤³¤Î¾ì¹ç¡¢¥â¥Ç¥à¤ò¤â¤Ã¤È¤Î¤ó¤Ó¤ê²°¤µ¤ó¤Ë¤¹¤ë¤Ë¤Ï¡¢ dial ¹Ô¤Ë¼¡¤Î¤è¤¦¤Êʸ»úÎó¤ò²Ã¤¨¤ë¤ÈÎɤ¤¤Ç¤·¤ç¤¦¡£

set dial "...... ATS10=10 OK ......"

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10.8. Àܳ¤¬ÉÔµ¬Â§¤Ë¥Ï¥ó¥°¥¢¥Ã¥×¤·¤Æ¤·¤Þ¤¦

¤¿¤¯¤µ¤ó¤Î¿Í¤¬¡¢¸¶°øÉÔÌÀ¤Î¥Ï¥ó¥°¥¢¥Ã¥×¤ò·Ð¸³¤·¤Æ¤¤¤Þ¤¹¡£ ¸¡¾Ú¤Î¤¿¤á¤ËɬÍפʤΤϡ¢¤Þ¤º¤É¤Á¤é¦¤Î¥ê¥ó¥¯¤Ç¤½¤ì¤¬µ¯¤³¤Ã¤Æ¤¤¤ë¤«¡¢ ¤È¤¤¤¦¤³¤È¤Ç¤¹¡£

³°ÉôÀܳ·¿¥â¥Ç¥à¤òÍøÍѤ·¤Æ¤¤¤ë¤Ê¤é¡¢ ñ¤Ë ping ¤ò»È¤¦¤³¤È¤Ç¡¢ ¥Ç¡¼¥¿¤òÁ÷¿®¤¹¤ë¤È¤­¤Ë TD ¥é¥ó¥×¤¬ÅÀÅô¤¹¤ë¤«¤É¤¦¤«¤ò³Îǧ¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¤â¤·¡¢TD ¥é¥ó¥×¤¬ÅÀÅô¤·¤Æ¡¢ RD ¥é¥ó¥×¤¬ÅÀÅô¤·¤Ê¤±¤ì¤Ð¡¢ ÌäÂê¤Ï²óÀþ¤Î¸þ¤³¤¦Â¦¤Ë¤¢¤ê¤Þ¤¹¡£TD ¤¬ÅÀÅô¤·¤Ê¤±¤ì¤Ð¡¢ ÌäÂê¤Ï²óÀþ¤Î¤³¤Á¤é¦¤Ç¤¹¡£Æâ¢·¿¥â¥Ç¥à¤Î¾ì¹ç¡¢ ppp.conf ¥Õ¥¡¥¤¥ë¤Ë set server ¥³¥Þ¥ó¥É¤òÆþ¤ì¤ëɬÍפ¬¤¢¤ë¤Ç¤·¤ç¤¦¡£ ²óÀþ¤¬ÀÚÃǤµ¤ì¤¿¤È¤­¡¢pppctl ¤ò»È¤Ã¤Æ ppp ¤ËÀܳ¤·¤Æ¤¯¤À¤µ¤¤¡£ ¤½¤Î¤È¤­¡¢ ¥Í¥Ã¥È¥ï¡¼¥¯Àܳ¤¬µÞ¤ËÉüµì (¿ÇÃÇ¥½¥±¥Ã¥È¤Ø¤Î¥¢¥¯¥»¥¹¤Ç¡¢ ppp ¤¬Éü³è¤·¤Þ¤¹) ¤¹¤ë¤«¡¢ ¤â¤·¤¯¤ÏÀܳ¼«ÂΤ¬Á´¤¯¤Ç¤­¤Ê¤¤ (¤¿¤À¤·¡¢ ppp µ¯Æ°»þ¤Ë set socket ¥³¥Þ¥ó¥É¤¬¤Á¤ã¤ó¤È¼Â¹Ô¤µ¤ì¤Æ¤¤¤ë¤È¤·¤Þ¤¹) ¤È¤·¤¿¤é¡¢ ÌäÂê¤Ï²óÀþ¤Î¤³¤Á¤é¦¤Ç¤¹¡£ ¤â¤·¡¢Àܳ²Äǽ¤Ç¡¢¤«¤Ä¾õ¶·¤¬ÊѲ½¤·¤Ê¤±¤ì¤Ð¡¢ set log local async ¤ò»È¤Ã¤Æ¥í¡¼¥«¥ëÈ󯱴ü¥í¥° (async logging) ¤òÍ­¸ú¤Ë¤·¡¢ ping ¤ò¾¤Î¥¦¥£¥ó¥É¥¦¤«¥¿¡¼¥ß¥Ê¥ë¤«¤é»È¤Ã¤Æ¤¯¤À¤µ¤¤¡£ È󯱴ü¥í¥°¤Ë¤Ï¡¢¤³¤Á¤é¦¤Î¥ê¥ó¥¯¤ÎÁ÷¼õ¿®¥Ç¡¼¥¿¤¬µ­Ï¿¤µ¤ì¤Þ¤¹¡£ ¤â¤·¡¢¥Ç¡¼¥¿¤¬Á÷¿®¤µ¤ì¤¿¤Ë¤â¤«¤«¤ï¤é¤ºÊ֤äÆÍè¤Æ¤¤¤Ê¤±¤ì¤Ð¡¢ ÌäÂê¤Ï²óÀþ¤Î¸þ¤³¤¦Â¦¤Ë¤¢¤ë¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡£

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10.9. ²óÀþ¤Î¸þ¤³¤¦Â¦¤Ç¤ÎÈ¿±þ¤¬¤Ê¤¤

¤³¤ì¤ËÂнè¤Ç¤­¤ë¤³¤È¤Ï¤Û¤È¤ó¤É¤¢¤ê¤Þ¤»¤ó¡£ÂçÉôʬ¤Î ISP ¤Ï¡¢Microsoft ¼ÒÀ½ OS °Ê³°¤ÎÍøÍѼԤËÂФ·¤Æ¤Î¥µ¥Ý¡¼¥È¤òµñÈݤ¹¤ë¤Ç¤·¤ç¤¦¡£ ppp.conf ¥Õ¥¡¥¤¥ë¤ÎÃæ¤Ë enable lqr ¤òµ­½Ò¤¹¤ë¤³¤È¤Ç ppp ¤¬²óÀþ¤Î¸þ¤³¤¦Â¦¤ÇȯÀ¸¤¹¤ëÀÚÃǤò¸¡½Ð¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¤¬¡¢ ¤³¤Î¸¡½Ð¤ÏÈæ³ÓŪÃÙ¤¤¤¿¤á¡¢¤¢¤Þ¤êÌò¤ËΩ¤Á¤Þ¤»¤ó¡£¤Þ¤¿¡¢¤¢¤Ê¤¿¤Ï user-ppp ¤òÍøÍѤ·¤Æ¤¤¤ë¤³¤È¤ò ISP ¤ËÃΤé¤ì¤¿¤¯¤Ê¤¤¤È»×¤¦¤«¤âÃΤì¤Þ¤»¤ó¤Í¡£

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disable pred1 deflate deflate24 protocomp acfcomp shortseq vj
deny pred1 deflate deflate24 protocomp acfcomp shortseq vj

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10.14. ppp ¤¬Àܳľ¸å¤Ë¸Ç¤Þ¤Ã¤Æ¤·¤Þ¤¦

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10.17. ppp ¤ò -auto ¥â¡¼¥É¤Çư¤«¤¹¤È¡¢ ¾¡¼ê¤Ë¥À¥¤¥¢¥ë¤¹¤ë¤³¤È¤¬¤¢¤ë

ppp ¤¬»×¤¤¤â¤·¤Ê¤¤¤È¤­¤Ë¥À¥¤¥¢¥ë¤ò»Ï¤á¤ë¾ì¹ç¡¢¤½¤Î¸¶°ø¤òÆÍ¤­»ß¤á¡¢ ËɻߤΤ¿¤á¤Ë¥À¥¤¥ä¥ë¥Õ¥£¥ë¥¿ (dfilters) ¤ò¤«¤±¤Æ¤ä¤ë ɬÍפ¬¤¢¤ê¤Þ¤¹¡£

¸¶°ø¤òÆÍ¤­»ß¤á¤ë¤¿¤á¤Ë¤Ï¡¢°Ê²¼¤ÎÌ¿Îá¤ò»ÈÍѤ·¤Æ¤¯¤À¤µ¤¤¡£

set log +tcp/ip

¤³¤ì¤ÇÀܳ¤òÄ̲᤹¤ë¤¹¤Ù¤Æ¤Î¥È¥é¥Õ¥£¥Ã¥¯¤ò¥í¥°¤Ë»Ä¤¹¤³¤È¤¬¤Ç¤­¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤·¤¿¡£ ¼¡¤ËÆÍÁ³²óÀþ¤¬¤Ä¤Ê¤¬¤Ã¤¿¤È¤­¤Î¥í¥°¤Î¥¿¥¤¥à¥¹¥¿¥ó¥×¤ò¤¿¤É¤ì¤Ð¡¢ ¸¶°ø¤òÆÍ¤­»ß¤á¤ë¤³¤È¤¬¤Ç¤­¤ë¤Ï¤º¤Ç¤¹¡£

¸¶°ø¤¬¤ï¤«¤Ã¤¿¤é¡¢¼¡¤Ë¡¢¤³¤Î¤è¤¦¤Ê¾õ¶·¤Ç¤Ï¥À¥¤¥ä¥ë¤¬µ¯¤³¤é¤Ê¤¤¤è¤¦¤Ë¤·¤Þ¤·¤ç¤¦¡£ Ä̾¤³¤Î¼ê¤ÎÌäÂê¤Ï¡¢DNS ¤Ç̾Á°¤Î²ò·è¤ò¤·¤è¤¦¤È¤·¤¿¤¿¤á¤Ëµ¯¤³¤ê¤Þ¤¹¡£ DNS ¤Ë¤è¤ë̾Á°¤Î²ò·è¤Ë¤è¤Ã¤Æ¡¢ Àܳ¤¬¹Ô¤ï¤ì¤ë¤Î¤òËɻߤ¹¤ë¤Ë¤Ï¡¢ ¼¡¤Î¤è¤¦¤Ê¼êÃʤòÍѤ¤¤Þ¤¹ (¤³¤ì¤Ï ppp ¤Î´û¤Ë³ÎΩ¤·¤¿Àܳ¤Ë´Ø¤·¤Æ¥Ñ¥±¥Ã¥È¤Î¥Õ¥£¥ë¥¿¥ê¥ó¥°¤ò¤¹¤ë¤â¤Î¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó)¡£

set dfilter 1 deny udp src eq 53
set dfilter 2 deny udp dst eq 53
set dfilter 3 permit 0/0 0/0

¤³¤ì¤Ï¥Ç¥Þ¥ó¥É¥À¥¤¥ä¥ëµ¡Ç½¤ËÌäÂê¤òÀ¸¤¸¤µ¤»¤ë¤¿¤á¡¢ ¾ï¤ËŬÀڤǤ¢¤ë¤È¤Ï¤«¤®¤ê¤Þ¤»¤ó¡£ ¤Û¤È¤ó¤É¤Î¥×¥í¥°¥é¥à¤Ï¾¤Î¥Í¥Ã¥È¥ï¡¼¥¯´ØÏ¢¤Î½èÍý¤ò¹Ô¤Ê¤¦Á°¤Ë DNS ¤Ø¤ÎÌ䤤¹ç¤ï¤»¤¬É¬Íפˤʤê¤Þ¤¹¡£

DNS ¤Î¾ì¹ç¤Ï¡¢ ²¿¤¬¼ÂºÝ¤Ë¥Û¥¹¥È̾¤ò¸¡º÷¤·¤è¤¦¤È¤·¤Æ¤¤¤ë¤Î¤«¤òÆÍ¤­»ß¤á¤ë¤Ù¤­¤Ç¤·¤ç¤¦¡£ ÂçÄñ¤Î¾ì¹ç¤Ï¡¢ sendmail(8) ¤¬ÈȿͤǤ¹¡£ ÀßÄê¥Õ¥¡¥¤¥ë¤Ç sendmail ¤¬ DNS ¤ËÌ䤤¹ç¤ï¤»¤Ê¤¤¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤«³Îǧ¤¹¤Ù¤­¤Ç¤¹¡£ ¼«Ê¬ÍѤÎÀßÄê¥Õ¥¡¥¤¥ë¤òºîÀ®¤¹¤ë¤¿¤á¤Î¾Ü¤·¤¤ÊýË¡¤Ï¡¢ ¥á¡¼¥ë¤ÎÀßÄê ¤Î¹à¤ò¤´Í÷¤¯¤À¤µ¤¤¡£ ¤Þ¤¿¤Ï¡¢ .mc ¥Õ¥¡¥¤¥ë¤Ë¼¡¤Î¤è¤¦¤Ê¹Ô¤òÄɲ䷤Ƥâ¤è¤¤¤Ç¤·¤ç¤¦¡£

define(`confDELIVERY_MODE', `d')dnl

¤³¤Î¹Ô¤òÄɲ乤ë¤È¡¢sendmail ¤Ï¥á¡¼¥ë¥­¥å¡¼¤ò½èÍý¤¹¤ë (Ä̾ï sendmail ¤Ï 30 ʬ¤´¤È¤Ë¥­¥å¡¼¤ò½èÍý¤¹¤ë¤è¤¦¡¢ -bd -q30m ¤È¤¤¤¦¥ª¥×¥·¥ç¥ó¤òÉÕ¤±¤Æµ¯Æ°¤µ¤ì¤Þ¤¹) ¤Þ¤Ç¤«¡¢ ¤Þ¤¿¤Ï (¿ʬ ppp.linkup ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤ÎÃæ¤Ç) sendmail -q ¤È¤¤¤¦¥³¥Þ¥ó¥É¤¬¼Â¹Ô¤µ¤ì¤ë¤Þ¤Ç¡¢ ¤¹¤Ù¤Æ¤Î¥á¡¼¥ë¤ò¥­¥å¡¼¤Ëί¤á¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£

ÌõÃí: sendmail -q ¤Ï¤½¤Î»þÅÀ¤Î¥á¡¼¥ë¥­¥å¡¼¤ÎÆâÍÆ¤ò½èÍý¤·¤Æ½ªÎ»¤·¤Þ¤¹¡£

10.18. CCP ¥¨¥é¡¼¤È¤Ï¤É¤¦¤¤¤¦°ÕÌ£¤Ç¤¹¤«

¥í¥°¥Õ¥¡¥¤¥ëÃæ¤Î°Ê²¼¤Î¥¨¥é¡¼¤Ï¡¢

CCP: CcpSendConfigReq
CCP: Received Terminate Ack (1) state = Req-Sent (6)

¤Î¥Í¥´¥·¥¨¡¼¥·¥ç¥ó¤Ë¤ª¤¤¤Æ ppp ¤Ï Predictor1 °µ½Ì¤òÍѤ¤¤ë¤Ù¤¯¼çÄ¥¤·¤¿¤Î¤ËÂФ·¤Æ¡¢ ÀܳÀè¤Ï°µ½Ì¤ò»ÈÍѤ·¤Ê¤¤¤³¤È¤ò¼çÄ¥¤·¤¿¾ì¹ç¤Ëµ¯¤³¤ê¤Þ¤¹¡£ ¤³¤Î¥á¥Ã¥»¡¼¥¸¤Ë¤Ï²¿¤Î³²¤â¤¢¤ê¤Þ¤»¤ó¤¬¡¢ ½Ð¤ë¤Î¤¬·ù¤Ê¤é¡¢°Ê²¼¤ÎÌ¿Îá¤òÍѤ¤¤Æ¤³¤Á¤é¦¤Ç¤â Predictor1 °µ½Ì¤ò̵¸ú¤Ë¤¹¤ë¤³¤È¤ÇÂбþ¤Ç¤­¤Þ¤¹¡£

disable pred1

10.19. ¥Õ¥¡¥¤¥ëžÁ÷¤ÎÅÓÃæ¤Ç¡¢ppp ¤¬ IO ¥¨¥é¡¼¤ò½Ð¤·¤Æ¸Ç¤Þ¤Ã¤Æ¤·¤Þ¤¦

FreeBSD 2.2.2 °ÊÁ°¤Î¥Ð¡¼¥¸¥ç¥ó¤Î tun ¥É¥é¥¤¥Ð¤Ë¤Ï¡¢tun ¥¤¥ó¥¿¥Õ¥§¡¼¥¹¤Î MTU ¤Î¥µ¥¤¥º¤è¤êÂ礭¤Ê¥Ñ¥±¥Ã¥È¤ò¼õ¤±¼è¤ë¤³¤È¤¬¤Ç¤­¤Ê¤¤¤È¤¤¤¦¥Ð¥°¤¬¤¢¤ê¤Þ¤·¤¿¡£ MTU ¤Î¥µ¥¤¥º¤è¤êÂ礭¤Ê¥Ñ¥±¥Ã¥È¤ò¼õ¤±ÉÕ¤±¤ë¤È IO ¥¨¥é¡¼¤¬µ¯¤³¤ê¡¢ syslogd ·Ðͳ¤Çµ­Ï¿¤µ¤ì¤ë¤Î¤Ç¤¹¡£

ppp ¤Î»ÅÍͤǤϡ¢ LCP ¤Î¥Í¥´¥·¥¨¡¼¥·¥ç¥ó¤ò¹Ô¤¦¾ì¹ç¤ò´Þ¤à¤É¤Î¤è¤¦¤Ê¾ì¹ç¤Ç¤âºÇÄã 1500 ¥ª¥¯¥Æ¥Ã¥È¤Î Maximum Receive Unit (MRU) ¤ò¼õ¤±Æþ¤ì¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡£ ¤Ç¤¹¤«¤é¡¢MTU ¤ò 1500 °Ê²¼¤ËÀßÄꤷ¤¿¾ì¹ç¤Ç¤â¡¢ISP ¤Ï¤½¤ì¤Ë´Ø·¸¤Ê¤¯ 1500 ¤ÎÂ礭¤µ¤Î¥Ñ¥±¥Ã¥È¤òÁ÷¤Ã¤Æ¤¯¤ë¤Ç¤·¤ç¤¦¡£ ¤½¤·¤Æ¤³¤Î¥¤¥±¤Æ¤Ê¤¤µ¡Ç½¤Ë¤Ö¤Á¤¢¤¿¤Ã¤Æ¡¢ ¥ê¥ó¥¯¤¬¸Ç¤Þ¤ë¤Î¤òÌܤˤ¹¤ë¤³¤È¤Ë¤Ê¤ë¤Î¤Ç¤¹¡£

FreeBSD 2.2.2 °ÊÁ°¤Î¥Ð¡¼¥¸¥ç¥ó¤Ç¤Ï¡¢MTU ¤ò·è¤·¤Æ 1500 ¤è¤ê¾®¤µ¤¯¤·¤Ê¤¤¤³¤È¤Ç¡¢ ¤³¤ÎÌäÂê¤ò²óÈò¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

10.20. ¤É¤¦¤·¤Æ ppp ¤ÏÀܳ®ÅÙ¤ò¥í¥°¤Ë»Ä¤µ¤Ê¤¤¤ó¤Ç¤·¤ç¤¦?

¥â¥Ç¥à¤È¤Î¡Ö¤ä¤ê¼è¤ê¡×¤¹¤Ù¤Æ¤Î¹Ô¤ò¥í¥°¤Ë»Ä¤¹¤Ë¤Ï¡¢ °Ê²¼¤Î¤è¤¦¤Ë¤·¤ÆÀܳ®ÅÙ¤Î¥í¥°¤ÎÍ­¸ú²½¤ò¹Ô¤Ã¤Æ¤¯¤À¤µ¤¤¡£

set log +connect

¤³¤ì¤Ï ppp(8) ¤ËºÇ¸å¤Ë¤¯¤ë¤³¤È¤¬Í׵ᤵ¤ì¤Æ¤¤¤ë expect ¤È¤¤¤¦Ê¸»úÎ󤬤¯¤ë¤Þ¤Ç¤Î¤¹¤Ù¤Æ¤Î¤â¤Î¤ò¥í¥°¤Ëµ­Ï¿¤µ¤»¤Þ¤¹¡£

Àܳ®ÅÙ¤Ï¥í¥°¤Ë¤È¤ê¤¿¤¤¤±¤ì¤É¡¢PAP ¤ä CHAP ¤ò»È¤Ã¤Æ¤¤¤ë (¤½¤Î·ë²Ì¡¢¥À¥¤¥ä¥ë¥¹¥¯¥ê¥×¥ÈÃæ¤Î CONNECT °Ê¹ß¤ËÁ´¤¯¡Ö¤ä¤ê¤È¤ê¡×¤ò¹Ô¤ï¤Ê¤¤ - set login ¥¹¥¯¥ê¥×¥È¤Ë¤Ï²¿¤â½ñ¤«¤Ê¤¤) ¤Î¤Ç¤¢¤ì¤Ð¡¢ ppp ¤Ë expect ¤ò´Þ¤ó¤À CONNECT ¹Ô¤¹¤Ù¤Æ¤¬¤¯¤ë¤Þ¤ÇÂÔ¤¿¤»¤ë¤è¤¦¤Ë¤·¤Ê¤¤¤È¤¤¤±¤Þ¤»¤ó¡¢ °Ê²¼¤Î¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£

set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 4 \"\" ATZ OK-ATZ-OK ATDT\\T TIMEOUT 60 CONNECT \\c \\n"

¤³¤³¤Ç¡¢CONNECT ¤ò¼õ¿®¤·¤Æ¤«¤é¡¢ ²¿¤âÁ÷¤é¤º¡¢Éüµ¢²þ¹Ô (linefeed) ¤òÂԤäƤ¤¤Þ¤¹¡¢ ppp ¤Ë CONNECT ¤Î±þÅú¤¹¤Ù¤Æ¤òÆÉ¤ß¹þ¤Þ¤»¤Æ¤¤¤ë¤ï¤±¤Ç¤¹¡£

10.21. »ä¤Î chat ¥¹¥¯¥ê¥×¥È¤Ç¤Ï \ ¤È¤¤¤¦Ê¸»ú¤ò PPP ¤¬²ò¼á¤·¤Æ¤¯¤ì¤Þ¤»¤ó¡£

PPP ¤ÏÀßÄê¥Õ¥¡¥¤¥ë¤òÆÉ¤ß¹þ¤à¤È¤­¤Ë¡¢ set phone "123 456 789" ¤Î¤è¤¦¤Êʸ»úÎó¤òÀµ¤·¤¯²ò¼á¤·¡¢ Èֹ椬¼ÂºÝ¤Ë1 ¤Ä¤Î°ú¿ô¤Ç¤¢¤ë¤ÈÍý²ò¤·¤Þ¤¹¡£ " ¤È¤¤¤¦Ê¸»ú¤ò»ØÄꤹ¤ë¤Ë¤Ï¡¢¥Ð¥Ã¥¯¥¹¥é¥Ã¥·¥å (backslash; \) ¤Ç¥¨¥¹¥±¡¼¥×¤·¤Ê¤±¤ì¤Ð¤Ê¤ê¤Þ¤»¤ó¡£

chat ¤Î³Æ°ú¿ô¤¬²ò¼á¤µ¤ì¤ë¤È¤­¤Ë¤Ï¡¢ \P ¤ä \T ¤Î¤è¤¦¤ÊÆÃÊ̤ʥ¨¥¹¥±¡¼¥×¥·¡¼¥±¥ó¥¹ (¥Þ¥Ë¥å¥¢¥ë¥Ú¡¼¥¸»²¾È¤Î¤³¤È) ¤ò¸«ÉÕ¤±¤ë¤¿¤á¤Ë¡¢ ¤â¤¦ 1 ²ó¡¢»ú¶ç²òÀϤò¹Ô¤¤¤Þ¤¹¡£ ¤³¤Î¤è¤¦¤Ë»ú¶ç²òÀÏ¤Ï 2 ²ó·«¤êÊÖ¤µ¤ì¤Þ¤¹¤Î¤Ç¡¢ Àµ¤·¤¤²ó¿ô¤À¤±¥¨¥¹¥±¡¼¥×½èÍý¤ò¹Ô¤ï¤Ê¤¤¤È¤¤¤±¤Þ¤»¤ó¡£

¥â¥Ç¥à¤Ë¤¿¤È¤¨¤Ð \ ¤Î¤è¤¦¤Êʸ»ú¤òÁ÷¤ê¤¿¤¤¾ì¹ç¤Ë¤Ï¡¢ ¼¡¤Î¤è¤¦¤Ë¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡£

set dial "\"\" ATZ OK-ATZ-OK AT\\\\X OK"

¼ÂºÝ¤Ë¥â¥Ç¥à¤ËÁ÷¤é¤ì¤ëʸ»úÎó¤Ï¼¡¤Î¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£

ATZ
OK
AT\X
OK

¾¤ÎÎã¤Ç¤¹¤È

set phone 1234567
              set dial "\"\" ATZ OK ATDT\\T"

¤Ï¼¡¤Î¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£

ATZ
OK
ATDT1234567

10.22. ppp ¤¬ segmentation fault ¤Ë¤Ê¤ë¤Î¤Ç¤¹¤¬¡¢ ppp.core ¥Õ¥¡¥¤¥ë¤¬¤¢¤ê¤Þ¤»¤ó

ppp (¤ä¾¤Î¥×¥í¥°¥é¥à) ¤Ï·è¤·¤Æ core ¤òÅǤ¤¤Æ¤Ï¤¤¤±¤Þ¤»¤ó¡£ ppp ¤Ï¼Â¸ú uid ¤¬ 0 ¤Çư¤¤¤Æ¤¤¤Þ¤¹¤Î¤Ç¡¢ ¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤Ï ppp ¤ò½ªÎ»¤µ¤»¤ëÁ°¤Ë¥Ç¥£¥¹¥¯¤Ë core ¥¤¥á¡¼¥¸¤ò½ñ¤­¹þ¤ß¤Þ¤»¤ó¡£ ¤·¤«¤· ppp ¤Ï¼ÂºÝ¤Ë¤Ï¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó°ãÈ¿¤ä¡¢ ¾¤Î core ¤òÅǤ¯¸¶°ø¤È¤Ê¤ë¤è¤¦¤Ê¥·¥°¥Ê¥ë¤Ë¤è¤Ã¤Æ½ªÎ»¤·¤Æ¤ª¤ê¡¢ ¤µ¤é¤ËºÇ¿·¤Î¥Ð¡¼¥¸¥ç¥ó (¤³¤Î¥»¥¯¥·¥ç¥ó¤Î»Ï¤á¤ò¸«¤Æ¤¯¤À¤µ¤¤) ¤ò»ÈÍѤ·¤Æ¤¤¤ë¤Ê¤é¤Ð¡¢¼¡¤Î¤è¤¦¤Ë¤·¤Æ¤¯¤À¤µ¤¤¡£

% tar xfz ppp-*.src.tar.gz
% cd ppp*/ppp
% echo STRIP= >>Makefile
% echo CFLAGS+=-g >>Makefile
% make clean all
% su
# make install
# chmod 555 /usr/sbin/ppp

¤³¤ì¤Ç¥Ç¥Ð¥Ã¥°²Äǽ¤Ê¥Ð¡¼¥¸¥ç¥ó¤Î ppp ¤¬¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Þ¤¹¡£ root ¤Ç ppp ¤ò¼Â¹Ô¤·¡¢ ¤¹¤Ù¤Æ¤ÎÆÃ¸¢¤¬Ìµ¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤è¤¦¤Ë¤¹¤ëɬÍפ¬¤¢¤ë¤Ç¤·¤ç¤¦¡£ ppp ¤ò¼Â¹Ô¤¹¤ë»þ¤Ë¤Ï¡¢ ¥«¥ì¥ó¥È¥Ç¥£¥ì¥¯¥È¥ê¤¬ make ¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤¢¤ë¤è¤¦¤Ë¤·¤Æ¤¯¤À¤µ¤¤¡£

¤³¤ì¤Ç¡¢ppp ¤¬¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥óÎã³°¤ò¼õ¤±¼è¤Ã¤¿¤È¤­¤Ë¤Ï ppp.core ¤È¤¤¤¦Ì¾Á°¤Î core ¥Õ¥¡¥¤¥ë¤òÅǤ¯¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£core ¤¬ ÅǤ«¤ì¤¿¤é¼¡¤Î¤è¤¦¤Ë¤·¤Æ¤¯¤À¤µ¤¤¡£

% su
# gdb /usr/sbin/ppp ppp.core
(gdb) bt
.....
(gdb) f 0
....
(gdb) i args
....
(gdb) l
.....

¼ÁÌ䤹¤ëºÝ¤Ë¤Ï¡¢¤³¤ì¤é¤¹¤Ù¤Æ¤Î¾ðÊó¤òÄ󶡤·¤Æ¡¢ ÌäÂêÅÀ¤ÎʬÀϤ¬¤Ç¤­¤ë¤è¤¦¤Ë¤·¤Æ¤¯¤À¤µ¤¤¡£

gdb ¤Î»È¤¤Êý¤Ë´·¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Ï¡¢¼ÂºÝ¤Ë dump ¤Î¸¶°ø¤È¤Ê¤Ã¤¿Íýͳ¤ä¤½¤Î¥¢¥É¥ì¥¹¡¢ ´ØÏ¢¤·¤¿ÊÑ¿ô¤ÎÃͤʤɤâÄ´¤Ù¤ë»ö¤¬¤Ç¤­¤ë¤Ç¤·¤ç¤¦¡£

10.23. auto ¥â¡¼¥É¤Ç¥À¥¤¥¢¥ë¤ò¤¹¤ë¤è¤¦¤Ê¥×¥í¥»¥¹¤¬Àܳ¤µ¤ì¤Ê¤¤¡£

¤³¤ì¤Ï ppp ¤¬¥í¡¼¥«¥ë¦¤Î IP ¥¢¥É¥ì¥¹¤ò¡¢ ưŪ¤ËÄÌ¿®Áê¼ê¤È¸ò¾Ä¤¹¤ë¤è¤¦¤ËÀßÄꤵ¤ì¤Æ¤¤¤ë»þ¤ËȯÀ¸¤¹¤ëÎɤ¯ÃΤé¤ì¤¿¾ã³²¤Ç¤·¤¿¡£ ºÇ¿·¤Î¥Ð¡¼¥¸¥ç¥ó¤Ç¤Ï¡¢ ¤³¤ÎÌäÂê¤Ï½¤Àµ¤µ¤ì¤Æ¤¤¤Þ¤¹¡£ iface ¤ò¥Þ¥Ë¥å¥¢¥ë¥Ú¡¼¥¸¤«¤é¸¡º÷¤·¤Æ¤ß¤Æ¤¯¤À¤µ¤¤¡£

¤³¤ì¤Ï¡¢ºÇ½é¤Î¥×¥í¥°¥é¥à¤¬ connect(2) ¤ò¸Æ¤Ó½Ð¤·¤¿»þ¡¢tun ¥¤¥ó¥¿¡¼¥Õ¥§¥¤¥¹¤Î IP ¥¢¥É¥ì¥¹¤¬¡¢ ¥½¥±¥Ã¥È¤Î½ªÃ¼¤Ë³ä¤êÅö¤Æ¤é¤ì¤Æ¤·¤Þ¤¦¤È¤¤¤¦ÌäÂê¤Ç¤¹¡£ ¥«¡¼¥Í¥ë¤Ï¡¢ ³°¤Ø½Ð¤Æ¤¤¤¯ºÇ½é¤Î¥Ñ¥±¥Ã¥È¤òºî¤ê¡¢¤½¤ì¤ò tun ¥Ç¥Ð¥¤¥¹¤Ø½ñ¤­¹þ¤ß¤Þ¤¹¡£ ¤½¤·¤Æ ppp ¤Ï¡¢ ¤½¤Î¥Ñ¥±¥Ã¥È¤òÆÉ¤ß¹þ¤ó¤ÇÀܳ¤ò³ÎΩ¤·¤Þ¤¹¡£ ppp ¤ÏưŪ¤Ë IP ¥¢¥É¥ì¥¹¤ò³ä¤êÅö¤Æ¤ë¤¿¤á¡¢ ¤â¤·¥¤¥ó¥¿¡¼¥Õ¥§¥¤¥¹¤Î¥¢¥É¥ì¥¹¤¬ÊѲ½¤·¤Æ¤·¤Þ¤¦¤È¡¢ ºÇ½é¤Ë³ä¤êÅö¤Æ¤é¤ì¤¿¥½¥±¥Ã¥È½ªÃ¼¤Î IP ¥¢¥É¥ì¥¹¤Ï̵¸ú¤Ë¤Ê¤Ã¤Æ¤·¤Þ¤¤¤Þ¤¹¡£ ¤½¤Î¤¿¤á¡¢¤½¤ì°Ê¹ßÁê¼ê¤ËÁ÷¤é¤ì¤ë¤¹¤Ù¤Æ¤Î¥Ñ¥±¥Ã¥È¤ÏÄ̾ Áê¼ê¤ËÆÏ¤¯¤³¤È¤Ï¤Ê¤¤¤Ç¤·¤ç¤¦¡£¤â¤·²¾¤ËÆÏ¤¤¤¿¤È¤·¤Æ¤â¡¢ ´û¤Ë¤³¤Á¤é¤Î IP ¥¢¥É¥ì¥¹¤ÏÊѹ¹¤µ¤ì¤Æ¤¤¤ë¤Î¤Ç¡¢ ¤É¤ó¤ÊÈ¿±þ¤âºÇ½é¤Î¥Þ¥·¥ó¤Ë¤ÏÌá¤Ã¤Æ¤­¤Þ¤»¤ó¡£

¤³¤ÎÌäÂê¤ËÂн褹¤ëÍýÏÀŪ¤ÊÊýË¡¤¬¤¤¤¯¤Ä¤«¤¢¤ê¤Þ¤¹¡£¤â¤·²Äǽ¤Ê¤é¡¢ Áê¼ê¤¬ºÆÅÙ¡¢Æ±¤¸ IP ¥¢¥É¥ì¥¹¤ò³ä¤êÅö¤Æ¤Æ¤¯¤ì¤ë¤³¤È¤¬°ìÈ֤Ǥ¹ :-) ppp ¤Î¸½ºß¤Î¥Ð¡¼¥¸¥ç¥ó¤Ï¤³¤ì¤ò¹Ô¤Ê¤¤¤Þ¤¹¤¬¡¢ ¾¤Î¤Û¤È¤ó¤É¤Î¼ÂÁõ¤Ï¤½¤¦¤¤¤Ã¤¿Æ°ºî¤ò¤·¤Þ¤»¤ó¡£

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