Ubuntu: Use Private NTP Server

Status

For hosts in isolated VLANS, we provide access to a local NTP server, via firewall rules.

The local NTP server is at: 192.168.1.12.

The main router includes a floating firewall rule that forwards UDP port 123 requests to the local NTP server.

Configuration

Here are steps to configure an isolated Ubuntu VM to use the local NTP server.

Install NTP on the VM with:

sudo apt install ntp