Open port 123 for Ubiquiti NTP access

RE: Open port 123 for Ubiquiti NTP access

LHerzog — Thu, 21 Nov 2024 12:42:14 GMT

the Unifi devices will connect to the NTP servers defined in the Network server / controller.

That's what you need to allow

Unifi devices do not need NTP before they register at the Network server. After they register, they will use the time servers defined by you there.

Unifi devices will ignore NTP servers that you set as DHCP option (41).

RickWeiss — Thu, 21 Nov 2024 12:30:29 GMT

I have used the following Sophos Recommended Read to allow NTP access for all my internal devices. It has worked well for the last couple of years.

I used Option 1 and chose to use us.pool.ntp.org but you can use what ever ntp source is appropriate for your location.

rfcat_vk — Thu, 21 Nov 2024 07:34:51 GMT

Please try adding a UDP for NTP to the service definition.

Ian

Erick Jan — Thu, 21 Nov 2024 04:25:50 GMT

Hi MCBLC,

Thank you for reaching out to Sophos Community.

I recommend checking the logs and performing a packet capture/TCPDump to gain more insight into what has happened to the traffic.

You may also create an allow firewall rule and position the rule on top without any other policies

Kindly check the following links and similar posts.