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Barracuda CloudGen Firewall

How to Configure Web Filtering

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How to Configure Web Filtering

Web filtering allows you to control web access. To limit access to certain types of websites and restrict requests

from specific dedicated networks or users, configure URL filtering policies. You can also exempt certain users

and IP addresses from filtering, log which requests are allowed and denied, and specify the types of statistics

that are generated for the service.

On the Barracuda NG Firewall, you can use one of the following engines for web filtering:

Barracuda NG Webfilter (IBM ISS) – The Barracuda NG Web Filter (IBM ISS) requires a

subscription. With the Barracuda NG Web Filter (IBM ISS), different URL category databases can be stored

locally on the Barracuda NG Firewall.

Barracuda Web Filter (CFDEF) – The Barracuda Web Filter is included for free with a valid Energize

Updates subscription. It uses the same category database as the Barracuda NG Web Filter (IBM ISS) but

does not store a local copy of the database on the Barracuda NG Firewall. Instead, every URL is

requested through the cloud and the categories for the URLs are stored on the Barracuda NG Firewall.

You can also configure authentication for the web filter and display blocked URL categories with an external

HTTP server.

In this article:

Before you Begin

Enable the Barracuda Web Filter. For more information, see .How to Enable the Barracuda Web Filter

Configure Web Filtering

To configure web filtering, complete these steps:

Step 1. Configure Web Filter Settings

You can configure the following settings for the web filter:

URL Filter Policies

Configure each policy to grant or deny access to specific URL categories. To determine the category of a

specific website, go to . A policy can also be restricted to onlyhttp://www.barracudacentral.org/lookups

certain networks and users that access the HTTP Proxy. If a request matches any networks, user groups, or

users that are specified in a policy, the policy is applied to it.

Policies are processed in an order that is determined by their name, which must be numerical. For example, a

policy named will be listed before a policy named . If you want to add a policy at the top of the0000123 023

processing list, include leading zeroes in its name.

By default, a whitelisting policy named is included in the table. You can edit, clone, or delete this policy. 999999

To create an URL filter policy:

Go to CONFIGURATION > Virtual Servers > >> Configuration Tree > Boxyour virtual server1.

Assigned Services > HTTP Proxy > Web Filter Config.

Click .2.Lock

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