[Samba] DDNS-filover in wiki
Rowland Penny
rpenny at samba.org
Mon Feb 27 10:43:14 UTC 2017
On Mon, 27 Feb 2017 11:07:26 +0100
Stefan Kania via samba <samba at lists.samba.org> wrote:
> Hi Rowland,
>
> you added the failover to your wiki:
>
> https://wiki.samba.org/index.php/Configure_DHCP_to_update_DNS_records_with_BIND9
>
> It would be a good idea to explain some things. In your script you are
> using the port 519 and 520 for the failover:
> --------------
> failover peer "dhcp-failover" {
> primary;
> address dc1.samdom.example.com;
> port 519;
> peer address dc2.samdom.example.com;
> peer port 520;
> max-response-delay 60;
> max-unacked-updates 10;
> mclt 3600;
> split 128;
> load balance max seconds 3;
> }
> --------------
> Why are you using this ports?
I actually wrote the failover notes sometime ago, they just never made
it to the wiki. If I remember correctly, the information came from 'man
dhcpd.conf' and at that time the recommended ports were '519' & '520'
> Are this ports TCP or UDP?
TCP
> Will they be opened automatically?
I think you mean in the firewall, don't really know because I don't use
a firewall, but I wouldn't have thought so.
>
> A short explanation would be good. As I told you before, it's one of
> the best howtos in the wiki.
Your post made me check the manpage again and, as usual, things have
changed, so I will do some testing based on the changes and then
update the wiki page.
Rowland
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