I've enabled UFW on one of production servers with configuration: Default: deny (incoming), deny (outgoing). For NTP synchronization, I've installed
ntp and it's currently running.
Can someone advise what rule should be added to UFW for NTP synchronization? I've read somewhere that
udp port 123 needs to be open for ntp, but when I run
ntpq -p, I get following output:
remote refid st t when poll reach delay offset jitter ============================================================================== propjet.latt.ne 18.104.22.168 2 u 4d 1024 0 81.243 9.054 0.000 ec2-107-20-168- 22.214.171.124 2 u 4d 1024 0 86.669 -23.040 0.000 utcnist2.colora .ACTS. 1 u 4d 1024 0 298.151 86.936 0.000
which indicates that I don't need to add any ufw rule and ntp is already working?