We have recently scanned servers for potentially open NTP services on UDP port 123.

Time synchronization is important and should remain enabled. However, most VPS, web, and mail servers only need client-side time sync and do not individually need to provide public NTP services.

If you received an email with link to this notice, your server was highlighted in our check.

Where appropriate, we may update the time setup so that the server continues to keep accurate time without exposing unnecessary ports. This may involve replacing the legacy 'ntp' daemon with a client-only time sync service such as 'systemd-timesyncd' or 'chrony', or otherwise restricting inbound access to UDP/123.

No service impact is expected. At most, the local time synchronization service may be restarted briefly.