On Fri, Oct 06, 2006 at 09:20:36AM +0100, Ted Harding wrote:
On 06-Oct-06 cl@isbd.net wrote:
On Thu, Oct 05, 2006 at 10:58:50PM +0100, Jonathan McDowell wrote:
Are you tracerouting/pinging an IP or a hostname?
A hostname. E.g. I can 'traceroute shell.x-1.net' and I can 'ping shell.x-1.net' but I can't 'ssh shell.x-1.net'. The ssh just hangs for ever.
If an IP, can you ssh to an IP address?
No, I tried that anyway, ssh to an IP address just fails too.
It looks as though it's not a routing/DNS problem at all.
I'm wondering if it may have to do with ssh -- maybe the host you're trying to ssh to doesn't like being accosted with ssh (may even not have it available) and so simpy refuses to respond, and therefore hangs. Or maybe your connection is coming in from an IP address that it doesn't want to respond to.
It's not just ssh not working and I can ssh to the same place from another Linux box on the same network/subnet as the one that doesn't work.
HTTP doesn't work either, just sits with the thingy going round and round but no connection.
Have you tried simple telnet?
Chris, I'll drop you a private mail with an IP address that will certainly respond to telnet with a login prompt, provided you can connect to it at all.
I have tried a telnet to the same place and it appears to connect but doesn't produce a prompt. I also tried turning the verbosity of ssh up somewhat and it too appears to connect but nothing gets returned.
It's as if the system is blocking *all* incoming packets, even those that are coming back down the same TCP stream.
I can ssh *in* to the system in question and (just tried it) I can ssh *from* the system into the other Linux box on the same subnet. What I can't do is ssh to the outside world - wierd!!
Wow - I just tried running yast2 on the system in question having logged into it from here at work via two ssh connections. It's popped up the GUI YaST control centre on my Sun X desktop here at work! Most things *must* be working pretty well then!