Firewall Traversal

You can enable the use of Session Traversal Utilities for NAT (STUN) and Relay (TURN) servers when remote clients are trying to establish a connection to the user’s device.

If you select Enable firewall traversal, remote clients can discover and connect to the user’s device even if they are separated by a firewall. The use of relay servers is enabled by default but you can choose to disable them. Relay servers allow a connection to other peers and transfer data without the need for a direct connection when a firewall is in place. To restrict the UDP port range used by the remote access host in the user’s device, in the UDP port range field, enter the range from minimum to maximum. Left blank, any port can be used.

If you select Disable firewall traversal and outgoing UDP connections are filtered by the firewall, the user’s device only allows connections with client machines within the local network.