Thanks you. 

The traffic will go to router which is handled by the Network dept. The fear  
that may router can crash   if we  start enabling the packet capture since it 
is layer 7. 

Is advisable,  if we  deny outbound UDP port 0  from the DNS servers, after 
enabling firewall.


Ejaz 

-----Original Message-----
From: S Carr [mailto:sjc...@gmail.com] 
Sent: Wednesday, July 27, 2016 10:51 AM
To: Ejaz <me...@cyberia.net.sa>
Cc: bind-users <bind-users@lists.isc.org>
Subject: Re: outgoing-traffic

On 27 July 2016 at 08:41, Ejaz <me...@cyberia.net.sa> wrote:
> Thanks for all.
>
> But the strange thing is that if the request comes on 53 port then it 
> should go only from 53 is it?? Why goes out from 0, any clue would be 
> highly appreciate.
>
> Regards
> Ejaz

Where's the packet capture to review?

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