notify explicit and also-notify

Matus UHLAR - fantomas uhlar at
Sat May 5 17:51:35 UTC 2018

>> On 05.05.18 09:52, Blason R wrote:
>>> OK So wondering if I have master in cloud wanted to know which port should
>>> I open for slave which is behind corporate firewall and if I set as below
>>> then my slaves will start listening on port 2034? I am bit confused on
>>> port
>>> numbers for NOTIFY messages and NOTIFY-UPDATED [i.e. AXFR/IXFR]

>On Sat, May 5, 2018 at 10:34 PM, Matus UHLAR - fantomas <uhlar at>
>> source port: random.
>> destination port: 53 (standard DNS port).
>> you don't need to enable different ports unless you can't do stateful
>> firewall

On 05.05.18 22:53, Blason R wrote:
>Absolutely that is TCP/53 required for Zone Xfer right?

not only xfer. both TCP and UDP are required for working DNS.

Matus UHLAR - fantomas, uhlar at ;
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