With all firewall devices you want to ensure the time on the device is correct to ensure accurate logging. RouterBOARD comes with two methods to configure the time, Manual and SNTP Client:
Manual Time Setup
Log into your RouterBOARD and select System and then Clock:
Configure the correct date / time and time zone.
Log into your RouterBOARD and select System and then SNTP Client:
Enable the service and then select Unicast as the mode. This will allow you to enter a primary and secondary NTP server. Within my settings I have configured it to pick up it’s time from 184.108.40.206 and 220.127.116.11 which are part of the pool.ntp.org servers.