How can I use tunnel switching to route VPN traffic between two Branch Office VPN tunnels? [WSM/Fireware XTM v11.x]
Posted by Samuel Turi on 03 May 2011 11:09 AM

How can I use tunnel switching to route VPN traffic between two Branch Office VPN tunnels? [WSM/Fireware XTM v11.x]


When you connect two or more remote Branch Office VPN (BOVPN) tunnels to your network, you must configure tunnel switching if you want the computers on each remote network to exchange data. When you set up this feature, the WatchGuard device decrypts packets sent from one VPN and sends the re-encrypted packets to their destination on the other VPN.

For example, if you have a Firebox at the Central Office that has a BOVPN to a Firebox at Remote Office A and a BOVPN tunnel to a Firebox at Remote Office B, you can use tunnel switching to allow traffic to pass from the trusted network of Remote Office A to the trusted network of Remote Office B without a the need for a third BOVPN tunnel between the two remote offices. This can be useful if you require control of network security at the Central Office, because you can apply policies to traffic between the two tunnels at the Central Office.

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