NSlookup issues

Michael Kjorling michael at kjorling.com
Thu Apr 12 15:18:16 UTC 2001


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Patrick,

DNS uses port 53 over TCP and UDP, so you will have to allow traffic
destined to that port. If you do, DNS should work fine.

There was also some mentioning about two high ports being used - I
could not find that post again when I looked but maybe someone else
knows? They had something to do with ZXFRs IIRC.


Michael Kjörling


On Wed, 11 Apr 2001, Patrick wrote:

> Hello I'm currently in the process of setting up an access-list on
> one of my routers. When I apply this access-list to incoming
> traffic I lose the ability to do an nslookup from my machine.
> I've checked to make sure that port 43 is open and traffic is
> allowed from any place to come in onport 43. I wanted to find out
> if there are any other ports that Name Servers use to send the
> lookup back to me.  Thanx for any help in advance.
>
> Patrick Laidlaw

- -- 
Michael Kjörling - michael at kjorling.com - PGP: 8A70E33E
"We must be the change we wish to see" (Mahatma Gandhi)

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