Firewall breaks internet connection on suse 9.1

Does anyone know the specific patch required to fix this problem. When I
switch on firewall on suse 9.1 my internet connection is lost. I
understand there may be a relevant patch to sysconfig however updating
sysconfig didn't resolve it. A relevant posting in another forum -

sysconfig - The sysconfig scheme

This update fix the restart of the firewall after a dialup connection is
established. Without this restart, all ports are closed on the dialup
interface and the connection seems to be not working.

I am attempting to switch on masquerading to share internet port.

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> Does anyone know the specific patch required to fix this problem. When I
> switch on firewall on suse 9.1 my internet connection is lost. .....

i remember vaguely that SuSEfirewall2 in SuSE 9.1 had some bugs and
irregular behaviour. it didn't disable 'personal-firewall' when configured
by yast, couldn't masquerade icmp pakets selectively (only if you masq all!
protocols and ports for a host or network icmp was masqued too) and other
confusing stuff.

feel free to try the versions from SuSE 9.2 to 10.0, they work better and
more reliable, you can download from ftp.suse.com somewhere under pub/suse
...., i'm currently on version 3.3-18.4, can be downloaded from
ftp.suse.com/pub/suse/i386/update/93./rpm/noarch, file
SuSEfirewall2-3.3-18.4.noarch.rpm.

do rpm -Uhv ..., grab the new configuration sample from the dir with the
documentation, put it in /etc/sysconfig, work through it, and see. in case
of problem get your old Version back with rpm -Uhv --force ...

maybe you still have to disable 'personal' manually, check
/etc/sysconfig/personal-firewall, 'REJECT_ALL_INCOMING_CONNECTIONS' there
must be set to "no" or "", otherwise all your configuration in the file
/etc/sysconfig/SuSEfirewall2 renders useless.

could also be your configuration is 'insufficient', especially if you'd
choose the wrong devices for internal and/or external interface, and
normally you don't 'switch on' the firewall - it is startet in several
stages automatically with the runlevel you enter, check yast2 - runlevel
editor.

if you like to learn about these things do 'iptables -nL >>somefile' before
and after starting the firewall and check through the results.

when the firewall is up and running and you want to try configuration
changes it is sufficient to enter 'SuSEfirewall2 start' to read and enable
the new configuration - as far as i have tested.

hope this helps,

helpless user,