Specifications

Chapter 1: Introduction 5
Site-to-Site VPN and Link Failover
You can create a site-to-site VPN tunnel between two Barracuda Link Balancers or between a
Barracuda Link Balancer and another device that supports IPsec. Networks connected via a tunnel
will communicate as if they are on the same network, even though they are separated by the Internet.
Using this functionality allows your site-to-site VPN tunnel to automatically failover to a secondary
link in the case of the failure of a primary link.
Ability to Deploy with Your Network Firewall
If you already have a firewall that meets your needs, you can use the link balancing, failover and
bandwidth management capabilities of the Barracuda Link Balancer and disable its firewall
functionality.
As you can see in Figure 1.2, adding the Barracuda Link Balancer to your network without removing
your firewall can be done with minimal disruption to your existing network.
Figure 1.2: Deploying with an Existing Network Firewall