[sclug] Strange networking problem

[Paul Weaver]

On Sat, Oct 08, 2005 at 03:05:46PM +0100, Derek M Jones wrote:
> All,
> 
> I installed Suse 10.0 on my laptop without problem,
> including downloading the latest patched.
> 
> Installing Suse 10.0 on my new server box (more packages
> installed) brings up some odd networking problems.
> 
> I can ping other boxed from it and it can be ping'ed from
> other boxes.
> 
> I can telnet and ftp from it to other boxes.  However,
> attempting an mget, or get, from ftp results in a long delay
> and no files being transfered.
> 
> firefox has no luck obtaining an address for any url I type in.
> 
> Most interesting of all.  I installed a program, working under
> Suse 9.3 and get the message on the server:
> 
> _X11TransSocketINETConnect: Can't connect: errno = 111
> Epsilon: Cannot connect to C server: 127.0.0.1:0.0
> 
> Suggestions or ideas anybody (X is working fine)?
> I have done a complete reinstall.  Same problem.
> Sounds like some socket layer is not running.

I'm sure you've already checked, but have you installed a software
firewall (iptables)? I spent a good hour once trying to work out why
a box wasn't doing DNS lookups until I realised traffic to the 
secondary DNS server was blocked by ipchains!