[Bind-users] Re: Ports

Remko Lodder remko at elvandar.org
Tue Jan 27 20:53:19 UTC 2004

UDP 53 normally is sufficient,

TCP 53 is used for very large queries and transfering zones.

I only open up port 53 on TCP level for zone transfers,

think of that before you open up it wide open :)


Kind regards,

Remko Lodder
www.mostly-harmless.nl Dutch community for helping newcomers on the

-----Oorspronkelijk bericht-----
Van: bind-users-bounces at lists.elvandar.org
[mailto:bind-users-bounces at lists.elvandar.org]Namens bill
Verzonden: dinsdag 27 januari 2004 20:39
Aan: Pete Walker
CC: bind-users at isc.org
Onderwerp: [Bind-users] Re: Ports


> I know I should know this but I don't.
> Can someone let me know which TCP and UDP port numbers I need to keep open
> to enable DNS to work properly?
> I'm using BIND 9.2.3 on Linux.
> Thanks in advance,
> Pete Walker.

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