Re: [GnomeMeeting-list] Help troubleshooting Gnomemeeting

[Erik Reuter <ereuter erikreuter com>]

On Fri, Jan 11, 2002 at 02:20:36PM +0100, Damien Sandras wrote:

> Probably not, but the problem is not from you to the other end, but
> from the other end to you. It means that you would have to communicate
> with somebody who is using a port below 2000, for example.

Can anyone suggest a good way to test which ports are blocked on my
machine? I'm not much of a programmer, nor am I an expert on routers and
TCP. Any help is appreciated.

For a specific example, how can I check if packets bound to my computer
on port 5000 are getting through? I used nmap to portscan all ports from
1-6000, but the highest port it detected open was 1720 (GM was running
at the time). I think that no program was listening on port 5000 at the
time. How can I tell the difference between no program listening on a
port, and the port being blocked?



-- 
"Erik Reuter" <ereuter erikreuter net>       http://www.erikreuter.com/