User Guide| LQ Series 4.0
6.5 How to link LQ units over a firewall
The Link-Master uses TCP port 80 for management and TCP/UDP port 655 for audio.
You will need to create port-forwarding rules within your firewall to make these
ports externally accessible to the Link-Master device.
When creating a Link-Group over the public internet, Link-Members need to be
given the Link-Master’s externally reachable IP address and the port that is
forwarded to port 80. This information is entered in the Linking page of the CCM.
Note: If no port forwarding rules have been applied the LQ devices will find the correct
default ports automatically, so there is no need to specify a port.
Once the devices are linked in a group, they will share network details with each
other automatically. To facilitate this, the network details, including the port that is
forwarded to TCP/UDP port 655 need to be configured in the Link-Master’s
Network page. If no port forwarding rules have been applied, it is not necessary to
specify a port.
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