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Re: networking problem



Ury Segal wrote:
> 
> Sagi Bashari wrote:
> 
> > On Wed, 8 Nov 2000, Noam Ben Haim wrote:
> >
> > > hello all.
> > > I have a home network, consists of 2 Win2000 computers, and a linux (RH6.2)
> > > one.
> > > I can ping to any machine from any machine, but since the modem is on one of
> > > the windows machines, I want to use it as a gateway, with dial-on-demand. I
> > > managed to do this for the other win2000 machine, but for some reason, I
> > > cant make the linux machine do the same. when I try to ping to a an address
> > > outside my network, I get "network is unreachable". what should I do next?
> >
> > You need to define your windows ip as your gateway.
> >
> > Try to run:
> > /sbin/route add -net windowsip netmask 0.0.0.0
> 
> I suspect it will not work, unless the man have real IP address
> on his linux box, and the windows machine knows how to route
> back.

As far as I understand the situation not the route command above nor Ury's
remark is relevant. AFAIK, since Sagi already have an internal network
*functioning*, his Linux box, which can use the internal network, will already
have routing to the local network, unrelated to the IPs used, be it legal (?),
or non-routable IP (much more likely). If the windows gateway does masquarading
which *works* for the other winblows machine, then all Sagi needs to do on his
Linux box is to define a default GW:

/sbin/route add default gw <win.dow.s.ip>

If the M$ gateway somehow enables others share it's internet connection in
another way, than Linux should utilize that way to speak to the M$ gateway.

Obviously, I recommend using Masquarading on your local Linux box, but this
requires quite amount of spare time to learn, if you dont control those
networking subjects. But, doing so will enable you to use some all the other
free benefits coming with Linux - Firewalling, Service monitoring (tcpd),
extensive logging, etc' etc' etc' . These do not come free on Winblows... .

Anyway, some more info will surely help debug your problem (IPs used, routing
table on Linux...)

boaz.
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