[WBEL-users] solved : ADSL via DHCP, IP adress and Firewall

[Jean LEE]

Hello,

Thanks for your answer : that was the right file to modify. I just execute
my Firewall script by adding four lines in /sbin/dhclient-script :

if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] ||
[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
    ifconfig $interface inet $new_ip_address $new_subnet_arg
$new_broadcast_arg
    # Add a network route to the computed network address.
    if [ $relmajor -lt 2 ] || ( [ $relmajor -eq 2 ] && [ $relminor -eq
0 ] ); then
        route add -net $new_network_number $new_subnet_arg dev $interface
    fi
    for router in $new_routers; do
        route add default gw $router
    done

    # added lines #
    echo '############################' >> /var/log/DHCLIENT-SCRIPT.log
    echo 'new ip address' >> /var/log/DHCLIENT-SCRIPT.log
    echo 'Start Firewall' >> /var/log/DHCLIENT-SCRIPT.log
    /etc/rc.firewall >> /var/log/DHCLIENT-SCRIPT.log
fi

If someone needs more informations....

Jean
----- Original Message ----- 
From: "bishop" <bishop@platypus.bc.ca>
Cc: "Mailing List - White Box" <whitebox-users@beau.org>
Sent: Friday, September 10, 2004 11:09 PM
Subject: Re: [WBEL-users] ADSL via DHCP, IP adress and Firewall


> Salut Jean,
>
> DHClient apparently runs a script (dhclient-script) on IP changes.
>
> 'man dhclient-script' brings up something, and I think it may be what
> you need.
>
> Good luck, and please report back if you win.
>
>   - bish
>
> Jean LEE wrote:
> > Hello Paul,
> >
> > I do not use PPoE, just DHCP. Even if I could use ip-up, I have to
> > restart it manually.
> > As the IP change are automatic with DHCP (no reconnection or something
> > else), I thought I have to start this script in my DHCP client to make
> > the launch of this firewall script automatic. Perhaps it is not
feasible....
> >
> > Thanks a lot for your answer.... Any other idea ?
> >
> > Jean
> >
> >     ----- Original Message -----
> >     *From:* Paul Voccio <mailto:pvoccio@proficient.com>
> >     *To:* Jean LEE <mailto:jean_lee_3@hotmail.com> ; Mailing List -
> >     White Box <mailto:whitebox-users@beau.org>
> >     *Sent:* Friday, September 10, 2004 3:20 PM
> >     *Subject:* RE: [WBEL-users] ADSL via DHCP, IP adress and Firewall
> >
> >     If you have a pppoe connection, which ADSL sometimes uses here in
> >     the states, ip-up and ip-down get called when the connection goes up
> >     and down.  You should then edit /etc/ppp/ip-up.local and have it
> >     re-run your firewall script that will run with the new ip.
> >
> >     Paul
> >
> >         -----Original Message-----
> >         *From:* whitebox-users-admin@beau.org
> >         <mailto:whitebox-users-admin@beau.org>
> >         [mailto:whitebox-users-admin@beau.org]*On Behalf Of *Jean LEE
> >         *Sent:* Friday, September 10, 2004 3:16 AM
> >         *To:* Mailing List - White Box
> >         *Subject:* [WBEL-users] ADSL via DHCP, IP adress and Firewall
> >
> >         Hello all,
> >
> >         I have an ADSL connection via an Ethernet router (Freebox in
> >         France). My server has an Ethernet card which is connected to
> >         this bridge and obtain its IP adress via DHCP.
> >         I am also using a firewall script which detects automatically
> >         this IP adress. I call this script in my rc.local file.
> >         Well, at startup my ethernet card is first brought up and the ip
> >         adress is detected via DHCP and then, a few moment later my
> >         firewall script is launched and detect this IP adress.
> >
> >         My problem is that my provider often changes my IP adress. Then,
> >         I have to reexecute manually my firewallscript to take this new
> >         ip adress into account. How can I do to make the execution of
> >         this firewall script automatic after each change in my IP adress
?
> >
> >         Thanks for any help,
> >
> >         Jean Lee
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