On Tue, 2002-05-28 at 15:17, Murray Butler wrote: > I can see and exchange between the two linux boxes and everyone else > on the GLAN, I can talk to the router (a VM TCPIP stack that owns an > external card).
That tells you that the routing from your host to the VM is correct and the routing from the VM to you is correct. What normally gets people with IP is that routing needs to be correct in both directions and when you can't reach a site there is a natural assumption that your end is wrong. It might be true for telephones but for IP its very often the case the reply is what is getting lost. Do a traceroute -n from the linux instance out and see what the last node it shows is. That is the last thing which knows how to route back to you (assuming you threw the packets at the right gateway which is probably true and easy to check with your sysadmin) Do the same from the outside to the last point you saw on your traceroute. If that also works then you know the network is complete. If both halves can reach reach the same node but not each other then you know roughly where things are going astray. The chances are a route isnt being advertised or isnt know to everyone it should be, so that your linux instance sends data out to the target correctly but its packet coming back the other way gets lost or misdirected Alan
