release/src/router/pppd/scripts/ppp-on-ssh

   1 #!/bin/sh
   2 #
   3 # A sample script to establish PPP session(s) via SSH 1.x
   4 #
   5 # Adi Masputra <adi.masputra@sun.com>
   6 # Jan 24, 2000
   7 #
   8
   9 #
  10 # You'd definitely want to change the following addresses to suit
  11 # your network configuration
  12 #
  13 LOC_IP=10.0.0.1
  14 REM_IP=10.0.0.2
  15 NETMASK=255.255.0.0
  16
  17 export LOC_IP REM_IP
  18
  19 #
  20 # This is the remote peer where sshd is running, either
  21 # its hostname or IP address
  22 #
  23 PPPD_RHOST=myremotehost
  24
  25 #
  26 # For this example, we assume that pppd on both local and remote
  27 # machines reside in the same place, /usr/local/bin/pppd
  28 #
  29 PPPD_LOC=/usr/local/bin/pppd
  30
  31 #
  32 # The location of local options file (where ssh client is running).
  33 # Note that the sample options file included in the distribution
  34 # may need further customizations, depending on your needs. The 'noauth'
  35 # option specified in the file is there to simplify the example, although
  36 # some may choose to have it there and rely on ssh authentication
  37 # instead.
  38 #
  39 PPPD_LOC_OPT=/etc/ppp/options-ssh-loc
  40
  41 #
  42 # The location of remote options file (where sshd daemon is running)
  43 # Note that the sample options file included in the distribution
  44 # may need further customizations, depending on your needs. The 'noauth'
  45 # option specified in the file is there to simplify the example, although
  46 # some may choose to have it there and rely on ssh authentication
  47 # instead. Also note that the remote options file need to include the 'notty'
  48 # options for this to work.
  49 #
  50 PPPD_REM_OPT=/etc/ppp/options-ssh-rem
  51
  52 #
  53 # The location of ssh client on the local machine
  54 #
  55 SSH_LOC=/usr/local/bin/ssh
  56
  57 export PPPD_LOC PPPD_LOC_OPT PPPD_REM_OPT PPPD_RHOST SSH_LOC
  58
  59 #
  60 # Uncomment the following to enable IPv6, note that the IPv6 support
  61 # needs to be enabled during compilation
  62 #
  63 # PPPD_IPV6='+ipv6 ipv6cp-use-ipaddr'
  64 export PPPD_IPV6
  65
  66 #
  67 # And execute pppd with the pty option, specifying ssh client as the
  68 # slave side of the pseudo-tty master/slave pair. Note that on this example,
  69 # ssh has been compiled to allow NULL encryption (thus the '-c none' option),
  70 # but in reality, you'd probably want to specify the encryption algorithm.
  71 # See the man page of ssh(1) for details.
  72 #
  73 exec $PPPD_LOC \
  74         pty '$SSH_LOC -c none $PPPD_RHOST $PPPD_LOC $REM_IP:$LOC_IP $PPPD_IPV6 file $PPPD_REM_OPT' \
  75         $LOC_IP:$REM_IP netmask $NETMASK $PPPD_IPV6 file $PPPD_LOC_OPT
  76