The Web Site Firewall Model 460 is an application protection firewall, which resides on a single appliance device. The tool recog- nizes attacks by monitoring network traffic to and from the web server. The default con- figuration for the device is to run in bridge mode, but it can also be installed in a routed mode. Bridge mode allows the device to inspect traffic bi-directionally to the web server without the use of an IP address. The routed mode is similar to a traditional network configuration, whereby a separate IP address is installed on each interface of the website firewall. This configuration can cause a few problems, which the bridge avoids.
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