Creating the GRETAP interface

Following the method used on site A's firewall, create the GRETAP interface:


Global configuration

Name: assign a name to the GRETAP interface


Interface configuration

Bridge: select an existing bridge on the firewall. This may be a bridge created by the default configuration or a bridge created specifically for this purpose.


GRETAP tunnel configuration

Tunnel source: select the physical interface through which GRE traffic will travel on the firewall. In the example given, this is the Firewall_out interface.

Tunnel destination: select an object bearing the public IP address of the remote firewall (Remote_Firewall in the example).


Click on Finish then Apply to confirm the creation of the interface.