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Barracuda CloudGen Firewall

How to Configure Gateway Routes

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Gateway routes are defined for all networks that are not directly attached to a port of the firewall. The firewall forwards all traffic with the configured destination to the gateway (next hop) IP address specified in the gateway route. For example: the default route (, which routes all traffic to the ISP gateway IP address, is a gateway route.


Step 1. Add a Gateway Route

  1. Go to NETWORK > Routing.
  2. In the Target Network field of the Gateway Route Configuration section, enter the IP address and netmask of the target network in CIDR format, e.g.,
  3. In the Gateway field, enter the IP address of the next hop or gateway. This gateway must be reachable by a direct route.
  4. From the Classification drop-down menu, select the relevant network.
  5. Specify Metric and Maximum Transmission Unit (MTU) for the route, if required.
    If more than one route to the same target network exists, you must assign a unique metric value to each route. The lowest metric (or preference number) specifies the preferred route. If the gateway becomes unreachable, the route with the next lowest metric will be used.

  6. Click Add.

Step 2. Perform a Network Activation

After you create or change basic network configurations such as routing, you must activate your new network configurations.

  1. Scroll to the top of the page.
  2. Click on the link in the warning message to activate the new network configuration.

The static route is now displayed in the NETWORK ROUTES table.

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