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NTP Server ... which interface?

Thu Jul 18, 2019 10:41 am

Hi All

I want to implement a local NTP server on a Mikrotik router. The config is pretty straight forward for simple sites and I can get it to work but here is my complication.

On one site, running a Cloud router, there are multiple bridges with differing IP ranges. So when setting up an NTP server, which interface/bridge/IP range does it attach itself to and how can I share it on all ranges?

Thanks,
R
 
tdw
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Re: NTP Server ... which interface?

Thu Jul 18, 2019 1:28 pm

It is an internal process so accessible on any local IP address via any IP interface, e.g. the gateway address you have set on each bridge, unless restricted by firewall rules.

We usually set the NTP server & DHCP server fields to be the same as the gateway for each DHCP server network for any DHCP clients, and also use an internal /32 loopback address on the router as the server address for static clients (we also use this /32 as the endpoint for VPN & PPPoE connections and OSPF).
 
r00t
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Re: NTP Server ... which interface?

Thu Jul 18, 2019 2:59 pm

NTP server seems to be listening on all interfaces. Have to use firewall to limit access...

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