Hardware manual

80-001113 SysLINK Administrator’s Guide Page 42
If the gateway is configured to use DHCP, it will try to get NTP server information from the
DHCP server. You may also manually set up the addresses on this page.
If you are using SSL for peer verification or you are using the automatic update feature, the
gateway must obtain a valid time from an external time server.
The HTTP server you specify need not be a designated time server – just a reliable server.
The gateway derives the system time from the HTTP header the server returns.
The NTP service uses UDP port 123. If your gateway is behind a firewall you may need to
allow accesses to this port through the firewall.