IMPORTANT
SNS 3.x versions have reached End of Maintenance since July 1st, 2024.
We recommend that you update your SNS firewalls to a version with maintenance to guarantee the protection of your infrastructure.
Creating a GRETAP interface
Tunnels that use GRETAP interfaces allow encapsulating Level 2 traffic (Ethernet). They can then be used to link sites sharing the same IP address range through a bridge or to transport non-IP protocols over a bridge.
GRETAP interfaces are configured via a wizard that allows you to create the interface easily.
Click on Add and Add a GRETAP interface. The following screen appears:
Global configuration
Name |
Enter a unique name for your GRETAP interface. |
Color |
Color assigned to the GRETAP interface. |
Interface configuration
Create a disabled GRETAP interface |
If this option is selected, the GRETAP interface will be inactive and located outside the bridges defined on the firewall. This option allows preparing a GRETAP configuration before using it in a production environment. |
Use an existing bridge |
A drop-down list allows selecting the bridge to which the GRETAP interface will be attached. |
Configuring the GRETAP tunnel
Tunnel source |
Select the outgoing interface of traffic using the tunnel. In general, this would be the “out” interface of the bridge to which the GRETAP interface belongs. |
Tunnel destination |
Select the object representing the tunnel’s remote endpoint. This is a host object that presents the public IP address of the remote firewall. |