[plug] Skype

[Simon Duff]

If you set up your firwall  rules to log dropped or blocked packets, 
then run the program and watch the traffic.

You'll probably find, though, that you already have imcoming ports 
opened to established and related connections, so it will allow incoming 
traffic on the same port that matches the previous traffic. Unless of 
course the traffic comes back on a different port.

I assume you're using iptables.
For example, my firewall has these rules at the bottom:
 $IPT -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT
 $IPT -A OUTPUT  -m state --state ESTABLISHED,RELATED -j ACCEPT
 $IPT -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT

But as I said, watch the firewall logs and see whats there.

Simon

garry wrote:

> Anyone here using Skype?
>
> Do you have to open any INcoming ports on the firewall? The 
> http://www.skype.com/help/guides/firewall.html says to open OUTgoing 
> ports, but says nothing about incoming...
>
> To receive a call, it'd be logical that at least one incoming port 
> would need to be open..
>
> (Having said that, I'm hoping I don't have to - it'd save me working 
> out the syntax for iptables to forward it!)
>
> Thanks in advance..
>
> Garry
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