You need to turn on IP forwarding.
If you get 0 for:
then you should:
echo 1 > /proc/sys/net/ipv4/ip_forward
and then it can forward stuff from your internal LAN to the internet and back.
If you have your old IPtables firewall rules file from RH9 you should be able to use it in FC2 (I do).
I have what I think is a pretty good script along with a tutorial available that works with all recent versions of Linux... I use it with my RH9 and FC2 based firewalls. Will post a link for that later (seems power is out at the site).
G'day. Just upgraded my RH9 (host PC, Internet Gateway) to FC2. Everything seems to be ok excepts that all my client PCs cannot access the net anymore. The host itself can access the net with no problem. Am connecting with an ADSL modem. I can ping the host from the client & vice versa. I was wondering whether it's the iptables that's the cause? Iptables that we use in RH9, can it be used in FC2 as well? Is there any extra rule(s) that we have to set in FC2.
I thank you in advance for your help.