NEWBIE: which port and protocol to open

[Mark Damrose]

"Wout Tankink" <wout at gmx.net> wrote in message
news:acjg49$ep30$1 at isrv4.isc.org...
>
> On 23 May 2002 11:43:00 -0700, Barry Margolin <barmar at genuity.net>
> wrote:
>
>
> >Those aren't incoming requests, they're outgoing queries; if the firewall
> >automatically allows reply traffic for anything sent out, you don't need
to
> >open a port manually for it.
>
> The name server is the master authorative for some public domains. The
> requester of the domain registry (the li-domain registry checks the
> setup of registered name servers) should be able to contact the name
> server. Also the slave name server should be able to do zone transfers
> (query-source option will do). When I'm at my office I want to use the
> name server at my private LAN as second nameserver.
> Those are incoming requests, aren't those?

Yes.
Queries from the public and transfers from your slave are incoming.  The
will have a destination port of TCP or UDP port 53.

Queries that your name server makes to other servers are outgoing, and will
have a source greater than 1023 and a destination of 53 - TCP or UDP.

>
> Wout
>