CDRouter can provide up to two NTP servers on the WAN interface. Each NTP server is enabled by configuring an IP address on the WAN side of the router for the NTP server. You may also define a hostname for the NTP server that will be automatically be populated into each of CDRouter's DNS servers.
Example NTP Configuration:
testvar ntpServer1 3.3.3.6
testvar ntpServerName1 time.nist.gov
testvar ntpServer2 3.3.3.7
testvar ntpServerName2 time.foo.com
For CDRouter-Multiport, the NTP servers are reachable through any WAN interface and the DNS names are automatically configured in the DNS servers for each WAN interface.