How do I access CNR remotely if the CNR server is behind a firewall?
A. If the server is to be managed remotely, perhaps being monitored round-the-clock by a network operation team, open the user interface ports. For getting the CNR GUI/CLI to open thought the firewall open UDP ports 2785 and 2786. The first port is for the outgoing and the second for the incoming data. Additionally, the well known ports for DHCP are 67 and 68, for DHCP failover the port is 647, for DNS use port 53. Other ports that can be opened are 389 for LDAP and 69 for TFTP.
