User`s guide

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After adjusting the order of rules in the rule set, click .Save Changes
Step 4. Verify the Routing Configuration
To verify that traffic is routed correctly according to your firewall rules:
Go to the BASIC > Active Routes page and check the routing table.
Go to the BASIC > pageRecent Connections and filter the entries for your service types.
Example - Configuring Dual ISPs with Automatic Failover
On the Barracuda Firewall, you can configure redundant ISPs with automatic failover.
The primary uplink can be a 3G, DHCP, or WAN connection with static or dynamic IP
address assignment.
This article provides an example of how to configure two redundant ISPs.
In this article:
Configure Dual ISP Routing
Verify Your Configuration
Configuring a Firewall Rule for Failover
Related Articles
Connection Objects
How to Create Connection Objects
for Failover and Link Balancing
Configure Dual ISP Routing
Before you begin:
Configure two ISPs as described in .How to Configure WAN Interfaces
To configure dual ISP routing:
Go to the NETWORK > IP Configuration page.
In the configurations the primary and secondary interfaces, edit the setting to specify the . In a configfor Metric route priority multiprovider
uration, the Barracuda Firewall selects the interface with the lowest metric value for outgoing traffic, assuming that it is available. Specify
a higher metric value for the secondary or backup ISP uplink. For example, use the following values for your primary and secondary
interfaces:
Primary ISP Metric: 100
Secondary ISP Metric: 200
Click .Save Changes
At the top of the page, click on the warning message to execute the new network configuration.
Verify Your Configuration
To verify your routing configurations, go to the following pages:
BASIC > Active Routes
BASIC > Active Connections
Configuring a Firewall Rule for Failover
To automatically failover from the primary to the secondary ISP, use the connection object in the firewall rule. The Default (SNAT)Default (SNAT)
connection object makes the Barracuda Firewall perform a source NAT using the local IP address obtained from a routing lookup to the
destination.
Managing Users and Groups
By default, routing always prioritizes the interface with the lowest metric configured in the firewall routing settings.