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# $Id:$
# This is a working example of ppp.conf.span-isp that uses ppp connections
# to the same machine through 3 null-modem serial cables.
#
# cuaD03 <-> cuaD04
# cuaD01 <-> cuaD06
# cuaD00 <-> cuaD07
#
# with gettys running on cuaD04, cuaD06 and cuaD07. The gettytab entry
# for these devices has a pp= capability that references a script that
# says:
#
# #! /bin/sh
# tty=$(tty)
# exec /usr/sbin/pppin -direct isp-in-${tty#${tty%?}}
#
# The whole thing is brought up with these commands:
#
# ppp -b isp1
# ppp -b isp2
# ppp -b isp3
#
# Something rather strange happens here.
# If you connect to the vpn-in diagnostic socket with ``pppctl
# /var/tmp/vpn-in'' and do a ``show links'', only a single link shows up.
# If you connect to the vpn diagnostic socket (which is created in
# ppp.linkup.span-isp.working, you see three links. This is because inetd
# is told to ``wait'' for ppp to finish and the receiving ppp gets to
# handle all incoming packets on the first descriptor.
#
# This is why enabling LQR won't work - VPN-IN has magic number problems,
# fails to reply to LQRs and the VPN invocations end up shutting down.
#
# If anyone can come up with a better way of doing PPP over UDP I'd be
# interrested to hear it. Currently, the server doesn't connect() or
# bind().... but the client connect()s. Is there any other way ?
#
# Answers on a postcard please ! (to brian@Awfulhak.org)
#
default:
set speed 115200
set device /dev/cuaD00 /dev/cuaD01 /dev/cuaD03
set dial
set login
set redial 3 5
set timeout 0
enable lqr
set lqrperiod 15
isp1:
set authname isp1name
set authkey isp1key
isp2:
set authname isp2name
set authkey isp2key
isp3:
set authname isp3name
set authkey isp3key
vpn:
set enddisc LABEL
set speed sync
set mrru 1500
set authname vpnname
set authkey vpnkey
add! default HISADDR
disable deflate pred1 lqr
deny deflate pred1
vpn1:
rename 1
set device 127.0.2.7:ppp/udp
vpn2:
rename 2
set device 127.0.2.6:ppp/udp
vpn3:
rename 3
set device 127.0.2.4:ppp/udp
vpn-in:
set enddisc label
set speed sync
set mrru 1500
enable chap
disable lqr
set ifaddr 127.0.0.2 127.0.0.3
set server /var/tmp/vpn-in "" 0177
isp-in-7:
set ifaddr 127.0.2.7 127.0.3.7
isp-in-6:
set ifaddr 127.0.2.6 127.0.3.6
isp-in-4:
set ifaddr 127.0.2.4 127.0.3.4
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