possible routing problem

[Michael Hipp]

Steve & Michael wrote:
> I'm attempting to get my WinXP box to actually work with Internet Connection
> Sharing and my linux box.  Trust me, I have to use the WinXP box.  The
> configuration is:
> router 192.168.1.1
> winxp cabled ethernet 192.168.1.100
> winxp avaya 802.11 192.168.0.1
> linux orinoco 802.11 dhcp
> 
> the linux box gets it's ip address via dhcp 192.168.0.81 in this case but a
> ping from linux to 192.168.0.1 fails

To get these things to work I usually have to do a couple of things:

- De-activate and re-activate Internet Connection Sharing on the *WAN* 
port of the XP box. Make sure ICS is *not* enabled on the *LAN* port.

- Disable the XP firewall on the LAN port. (You can just disable it 
altogether since you have a router that presumably is doing NAT and 
therefore acts as a front line firewall against the wide Internet.

The ping should work once the firewall is disabled.

Caveat: Internet Connection Sharing and the XP firewall are notoriously 
fickle things, they often don't work as advertised so some application 
of "lather, rinse, repeat" is often called for. And don't forget to 
reboot after doing the above as things that are supposed to take 
immediate effect often don't and you want to make sure your settings 
will survive a reboot while it's fresh on your mind.

Hope this helps,
Michael