US Robotics USR2410 Manuale di Installazione Scaricare il pdf (Pagina 62)

58 6. Manual System Conﬁguration

Diverting the boot scripts from init:

#!/bin/sh

mkdir /etc/network/init.d

PACKAGES="dns−clean fetchmail ippl lprng ntp ntpdate ppp scandetd ssh xinetd"

for p in $PACKAGES; do

dpkg−divert −−rename −−divert /etc/network/init.d/$p /etc/init.d/$p

update−rc.d $p remove

done

Nowwegotothe rc.d directories and create the newsymlinks by hand.

Creating the new startup/shutdown symlinks (example):

#> cd /etc/network/proﬁles

#> mkdir −p XXXX/rc.d YYYY/rc.d ZZZZ/rc.d

#> cd XXXX/rc.d

#> ln −s ../../../init.d/ssh S20ssh

#> ln −s ../../../init.d/ssh K20ssh

To integrate the VPN tunnel into this network proﬁle management, we deﬁne a special network proﬁle vpn,

which is not mapped to a scheme but can simply replace the current proﬁle on a givenscheme.

To initialise the VPN tunnel and to switch to the corresponding proﬁle, we use a simple script:

/usr/local/bin/vpn:

#!/bin/sh

prog=‘basename $0‘

test "X$SUPERCMD" = "X$prog" || exec /usr/bin/super $prog ${1+"$@"}

PATH="/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin"

ADDRESS=""

export DISPLAY=":0.0"

case "$1" in

up|start)

/usr/local/bin/xterm −geometry 156x26−0−0 −e vpnclient connect XXXX &

while [ "$ADDRESS" == "" ]; do

ADDRESS=‘vpnclient stat tunnel | grep "Client address" | awk ’{print $3}’‘

sleep 1

done

/usr/local/packages/network/bin/vpn−select

;;

down|stop)

kill ‘pidof vpnclient‘ &> /dev/null

kill ‘pidof vpn‘ &> /dev/null

/usr/local/packages/network/bin/vpn−deselect

;;

echo "Usage: vpn [up|start|down|stop]"

;;

esac

Note: This script sets DISPLAY=:0.0" and assumes that root has access to this display.Note also: XXXX is the

name of the conﬁgured VPN proﬁle,

We hav e to register this script with the super package by adding the following stanza to the conﬁguration ﬁle:

/usr/local/bin/vpn:

vpn /usr/local/bin/vpn uid=root info="start/stop VPN" \

<user>

The twoscripts vpn-select and vpn-deselect have a similar functionality to proﬁle-select and proﬁle-deselect

whith the only exception that we don’thav e to map a proﬁle but select the special proﬁle vpn after the VPN tun-

nel has been established and revert to the previously active proﬁle after the VPN tunnel has been closed.

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US Robotics USR2410 Manuale di Installazione Pagina 62

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