The NTP service is a Network Time Protocol (NTP) daemon which will listen for requests from clients and allow them to synchronize their clock with that of a firewall running pfSense® software. By running a local NTP server and using it for local clients, it reduces the load on the lower-stratum servers and can ensure that local systems can always reach a time server. Before delegating this task to a firewall running pfSense, the best practice is to ensure that the firewall has an accurate clock and keeps time reasonably.