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Re: closing unwanted ports - and what is 1720/tcp filtered H.323/Q.931

* Noah Meyerhans:

>> what is 
>> 1720/tcp filtered H.323/Q.931
>> ?
>> and how do i turn it off if it is uneccessary.
> It may be nothing.  The fact that it showed up as filterd in the nmap
> output indicates that nmap didn't received a TCP RST packet back when it
> tried to contact that port.  That may mean you have iptables configured
> to DROP packets to that port.

It could also mean that the the ISP filters 1720/TCP, in order to
prevent its customers from using VoIP.

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