I thought port 0 was never valid as either source or destination.
On Wed, 27 Jul 2016 11:22:06 +0300 "Ejaz" <[email protected]> wrote: > > 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:[email protected]] > Sent: Wednesday, July 27, 2016 10:51 AM > To: Ejaz <[email protected]> > Cc: bind-users <[email protected]> > Subject: Re: outgoing-traffic > > On 27 July 2016 at 08:41, Ejaz <[email protected]> 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? > > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to > unsubscribe from this list > > bind-users mailing list > [email protected] > https://lists.isc.org/mailman/listinfo/bind-users > > _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list [email protected] https://lists.isc.org/mailman/listinfo/bind-users

