[afnog] Skype Port

[Carlos Martinez-Cagnazzo]

What I find strange is why people would want to block Skype.

I use it all the time for work-related purposes, it provides an
extremely cheap way to make international phone calls which, at least
for me (I live in Uruguay) would be extremely expensive, and provides
a chat system that beats MSN hands down.

On Mon, Jan 24, 2011 at 11:28 AM, Graham Beneke <graham at neology.co.za> wrote:
> On 24/01/2011 15:09, Bope Christian wrote:
>>
>> someone know the Skype Port , i need to block this port in my firewall.
>
> Skype unfortunately does not use a single port. It uses almost any port that
> it can to get past NAT and firewall configurations. In a similar way to
> other peer-to-peer applications like bittorrent.
>
> You would need to do layer 7 filtering with a suitably capable firewall. You
> also need to do layer 7 inspection on port 80 & 443 traffic as Skype is even
> capable of proxying via HTTP.
>
> --
> Graham Beneke
> Systems Engineer      | Neology (PTY) Ltd.
> graham at neology.co.za  | http://www.neology.co.za/
> Cel: +27-82-432-1873  | Suite 301, Block B, Eva Park
> Tel: +27-11-476-1933  | Cresta, Johannesburg
> Skype: grbeneke       | MSN: graham at neology.co.za
>
>
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-- 
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Carlos M. Martinez-Cagnazzo
http://www.labs.lacnic.net
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