Re: Setting up a FC3 gateway

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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

Are you directly connecting the Windows XP box to the Linux host, or do
you have a switch or a hub in between them?  If direct, are you certain
that you are cabled correctly?  I would think you'd want a crossover
cable instead of a regular cable.

What are the results of the following commands on the Linux host:

route -n
ifconfig eth0
service iptables status
ping -c 4 192.168.1.2
arp -a

And what are the results of these commands on the XP box:

route print
ipconfig
ping -n 4 192.168.1.1
arp -a

Thanks,
Thomas


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