How to allow timesync over UDP port 123 (SNTP) and TCP port 37 (TIME)?

As you may know there are currently two ways of performing a time sync between the local computer and remote time servers:

1.) over UDP port 123 (SNTP) =to prefer
2.) over TCP port 37 (TIME) =old

How do I setup rules in LnS for allowing these timesyncs (especially the first one)?

Matt

 

as a guess enable UDP port 137 & TCP 37

 

Here's your answer.
I have never seen time-sync on port 37. Must be very old method.

 

You can set a rule:
Allow
Ethernet type: UDP
Source Port: 123
Destination Port: 123

It is ok .

 

Allow
IP
UDP
Inbounds & Outbounds
Destination
TCP/UDP ort
Equals
123 ntp

It works, but I don't know wherther it is strict enough.