NEWBIE: which port and protocol to open

[Barry Margolin]

In article <acisfu$e77i$1 at isrv4.isc.org>, Wout Tankink  <wout at gmx.net> wrote:
>I'm setting up a nameserver on my home LAN (which has one public
>IP-address). The name server is authorative for some public domains,
>so it should be visible from the outside. I'm also running a slave
>nameserver on the LAN at my office, that is authorative for these
>domains, so zone transfer should be possible.
>What port on my firewall (53?) should I open and for what protocol
>(TCP?) should I open it, so that it will work?

You need to open TCP and UDP port 53.  Regular queries usually use UDP, but
they can also use TCP.  Zone transfers always use TCP.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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