My Router Isn't

[Patrick Fleming EA]

I once had overly complex routing tables set up which caused me great pain 
and confusing problems such as you are describing. What are your routing 
tables? eg route -n from all 3 machines.


> George Gambill wrote:
> > 
> > Trying to set up a router (RH8) between a 192.168.100.0/255.255.255.0 subnet
> > and a 10.1.0.0/255.255.0.0 subnet.
> > 
> > Hosts involved are
> > 
> >    winslow              192.168.100,253
> > 
> >    gwg          192.168.100.252 (eth0)
> >    gwg          10.1.1.68               (eth1)
> > 
> >    nowhere              10.1.1.66
> > 
> > >From winslow (aka 192.168.100.253) I can ping:
> >         gwg                     (aka itself)
> >         192.168.100.252 (aka GWG eth0)
> >         10.1.1.68               (aka GWG eth1)
> > 
> > but not:
> >         nowhere         (aka 10.1.1.66)
> >         10.1.1.66               (aka nowhere)
> > 
> > >From GWG (the router) I can ping:
> >         winslow                 (aka 192.168.100.253)
> >         192.168.100.253 (aka winslow eth0)
> > 
> >         gwg                     (aka itself)
> >         192.168.100.252 (aka itself eth0)
> >         10.1.1.68               (aka itself eth1)
> > 
> >         nowhere         (aka 10.1.1.66)
> >         10.1.1.66               (aka nowhere)
> > 
> > from nowhere (aka 10.1.1.66) I can ping:
> > 
> >         gwg
> >         10.1.1.68
> >         192.168.100.252
> > 
> > but not:
> >         winslow
> >         192.168.100.253
> > 
> > Using Webmin on the router (gwg) and looking at the firewall, it shows under
> > "packet filtering":
> >         "FORWARD" default "Accept" with no other rules
> >         "INPUT" default "Accept" with no other rules
> >         "OUTPUT" default "Accept" with no other rules
> > 
> > Any ideas why I can't ping nowhere (10.1.1.66) from winslow
> > (192.168.100.253)?
> > 
> > George
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> 
> 
> Hi George,
> 
> What is the status of IP Forwarding on the router (gwg)?  cat
> /proc/sys/net/ipv4/ip_forward
> 
> George
> 

-- 
Patrick Fleming, EA
Licensed to represent taxpayers
before Exam, Appeals, and Conference 
divisions of the IRS