Hello, I have a 7200 series router that I would like to have sync its time with a public NTP server. Time sync is actually working great. My problem is that when I run a port scanner I see that UDP 123 is in open state.
Here is my config regarding NTP. I would like UDP 123 to be closed. Is there a way to accomplish this?
access-list 1 permit 18.104.22.168
ntp access-group serve-only 1
ntp server 22.214.171.124