How do you force the source port?

[Kevin Darcy]

Masters don't "update" slaves, in the sense of initiating DNS transactions to
them. Zone transfers take the form of a query from the slave (of type AXFR or
IXFR), and a series of response packets from the master. Since the query is
always sent to port 53, that's the source address of the AXFR/IXFR response
packets.

What exactly is it that you're trying to accomplish here? Maybe there's a
better way.


- Kevin

Jamie P. Bontrager wrote:

> What substatement would I use under "options" in named.conf to force the
> source port for sending when doing zone transfers. It's my understanding
> that a primary server will use any arbitrary port greater than 1023 for
> sending updates to a slave. I want to force updates through a certain port.
> Is this possible, if so how?
>
> Thanks,
> jAmIe
>
> § Jamie P. Bontrager
> § Internet & PCS Services
> § KCTC.net