Re: [webmin-l] [1.260] Sporadic loss of contact between two webmins

[Jamie C. <jca...@we...>]

On 18/May/2006 17:09 Joaquim Homrighausen wrote ..
> 
> >So you have multiple remote monitors for the teacher server, but only
> one is failing 
> >like this? If so, is there any firewall between the two machines that
> could be
> >blocking ports 10000-10100 ?
> 
> I've changed the port to 1080, and it's being allowed through the firewall.
> I'm also using an IP Access Control list in Webmin on the teacher server,
> and have set the firewall's IP-address and the "webmin master" machine's
> IP-address as allowed addresses.

Make sure you allow a few TCP ports above 1080 (like up to 1100) as well, as
Webmin uses them for server-to-server communication .. and blocking them could cause
just this kind of periodic failures.

> What's annoying is that I don't get "complete failures" and I don't get
> them "all the time". That's the part that's driving me nuts :-)

Yeah, that is the worst kind of problem to debug!

 - Jamie