Setting up a FC3 gateway

[Neil Dugan]

On Wed, 2005-03-30 at 20:19 -0300, Thiago Guzella wrote:
> Greetings,
> 
> I am running FC3 x86_64 on a DSL-connected pc, which works great by
> itself; I have another machine running windoze XP, and would like to
> use the first pc as a gateway, so that windoze can have access to the
> network.
> 
> In the linux machine, with 2 ethernet devices, eth0-> connected to
> windoze, eth1-> connected to the ADSL modem (under ppp0), eth0 is set
> with ip address 192.168.1.1, netmask 255.255.255.0, and eth1 is set by
> adsl-setup... The windoze pc has an ip address 192.168.1.2, netmask
> 255.255.255.0, gateway 192.168.1.1 ( = the FC3 ip address).
> 
> Using this setup, windoze can ping linux, but linux can't ping windoze
> (no response). I even tried running ping with -I eth0 with no luck :(
> 
> Well, i started doing the usual stuff in order to set the gateway under fedora:
> 1) enabling ip_forwarding on /etc/sysctl.conf
> 2) modprobing iptables_nat
> 3) adding iptables masquerading rules to table nat (iptables -t nat -A
> POSTROUTING -o ppp0 -j MASQUERADE)
> 
> needless to say that windoze remains unconnected... what am I missing???? 
> Thanks in advance
> 

Have you tried with the iptables stuff turned off (i.e. no firewall no
gateway).

It might help to see you iptables file.

Is it possible that the windows machine has its own firewall.

Regards Neil