DEMAND-PPP

Ū
pppdѤdemand dial-up ppp wrapperǤ
ΥץѤ뤳Ȥǡdemand dial-up ppp
ʲƼ¹Խޤ

1) pppddemand modeˤ롢dynamic address褷ޤ
2) idleꤷƤ⡢pppdΥХˤäơҤäޤ
   ĤޤǤǤʤ礬򤷤ޤ


1) kernel config file
	pseudo-device	ppp	?
	pseudo-device	tun	?
ξƤkernelɬפǤ
Υץϡ
	³γϤȯ٤ˡtun device
	ºݤpppΥǡ̿ˡ ppp devcie
Ѥޤtun device³λϻѤޤ

2) Υץ򥳥ѥ뤷ƥ󥹥ȡ뤷ޤ
	make
	make install

demand-ppp/sbin/
scripts/etc/ppp/
configuration file /etc/ppp/peers/
ʲ˥󥹥ȡ뤵ޤ

פա
A)/etc/pppip-upip-downץȤˤ
  scriptʲˤip-upip-downϥ󥹥ȡ뤵ޤ
  ξ硢ɬscriptʲˤip-upip-downƤ
  ¸ΥեɲäƤ
B)scriptˤɬ¹Ը¤ղäƤǧƲ
  ip-up, ip-down, demand-ppp.up, demand-ppp.ip-up, demand-ppp.ip-down
 
3) demand-pppΥե졼ե¹ԴĶ˹碌
   editޤ

  A)ɸǤ
	/etc/ppp/peers/demand-ppp.conf.default
  Ȥޤ
  demand-ppp -c <call option>
  ǵưϡ
	/etc/ppp/peers/demand-ppp.conf.<call option>
  Ȥޤޤξ硢pppdˤ
	call <call option>
  ϤΤǡpppd/etc/ppp/peersʲ
	<call option>
  򻲾Ȥ褦ˤʤޤ
 
   /etc/ppp/peers/demand-ppp.conf.XXX fileʲεҤ˽ä
  ꤷޤ

REMOTE_NETWORK="default"
     ppp³оݥͥåȥꤷޤŪˤ
	route add $REMOTE_NETWORK <ppp interface dst addr>
     Ȥʤޤ

TUNNEL_SRCADDR="193.1.1.1"
TUNNEL_DSTADDR="193.1.1.2"
     tunnel deviceꥢɥ쥹ǤΥɥ쥹ϡ
     ¸ΤɤΥץ饤١ȥͥåȥˤ°ʤɥ쥹
     ˤĤƤ
     㤨СʤΥץ饤١ȥͥåȥ
	192.50.98.0/24
     ʤСΥͥåȥ°ʤǤդΥɥ쥹㤨
	193.1.1.1193.1.1.2
     Ѥޤ
NET_ENABLE="YES"
     ppp³NAT table˼ưŪɬפʥǡɲä
     ³λˤޤ
     ɲäNATΥ롼demand-ppp.ip-upץȤ˵
     Ƥޤɬפ˱ѹǽǤ
     rc.confipfilteripnatͭˤƤƤ
     ޤ1.4.2Ǥipfilterͭˤˡnatꤹ
     panic򵯤ޤդƤ
NAT_LOCAL="192.50.98.0/24"
     IP ޥ졼ɤ뤢ʤΥץ饤١ȥͥåȥ
     ꤷޤ


  B) pppdΥץեꤷޤ
     pppdISP³̾񤭤ޤ
     â
     pppdΥץե(/etc/ppp/options/etc/ppp/peers/XXX)
     ˤϼΥץʤǤ
	call persist nopersist detach nodetach demand 
        nodefaultroute defaultroute ipparm
     ޤclientremoteΥɥ쥹λϤƤ
     demand-ppppppdnodetach,nopersistǵưޤ

4) demand-pppưޤ
     ץ
	-c  <call option>  demand-ppp/etc/ppp/peers/<call option>
			   򻲾Ȥpppdˤ call <call option>
			   Ϥޤ
			   Υץˤäơ³˱
			   ưѹǽǤ
	-p "<pppd option>"   pppdϤץǤ 
			   ""ǰϤǲ
        -f <tunnel device> tun0, tun1 ..ꤷޤ
	-v 		   ͡ʿǥåФޤ

