Firewall changes to support discovery (foxs)

To successfully discover stations under a NiagaraNetwork, a Supervisor PC’s Windows firewall needs exceptions for the PC’s UDP port(s) as well as for its TCP port(s). This is because station discovery uses UDP multicasting. Otherwise, with only a TCP port opened, your discovery may come up empty.

These foxs ports require firewall configuration:

  • TCP port 4911 (1911 if using fox and not foxs)

  • UDP port 4911 (1911 if using fox and not foxs)

Note: Platform communication does not use UDP multicasting. Use of fox instead of foxs is not recommended because of the security risk.

If a Supervisor uses the standard port for platform connections (5011 for a secure connection, 3011 for a connection that is not secure), you might also add an exception for this port or for whatever TCP port the platform daemon uses.

If you are using non-standard port numbers for station (foxs) connections, similar firewall exceptions may be needed for those TCP and UDP ports.