Web Filter Key Features

The Barracuda Web Filter is a complete content filtering and application blocking solution designed to enforce acceptable Internet usage policies by blocking access to objectionable content and unauthorized Internet applications. At the same time, the Barracuda Web Filter includes award-winning protection against Internet threats.

Although the web has proven to be a powerful tool for organizations, analysts estimate that 70% of browsing to pornography sites happens during normal business hours and about 30-40% of overall Internet usage in the workplace is not related to business.

Websites that target businesses may provide secure business environments, but an increasing number of Web sites and Internet applications targeting personal usage are hosts to spyware, viruses, and other Internet threats. Clearly, unauthorized personal web browsing not only poses a threat to productivity but also to the security of your network.

Comprehensive Content Filtering

Combining multiple techniques, the Barracuda Web Filter includes URL filtering, URL rewriting, and MIME type blocking to provide powerful control over policies covering Web site usage. Capabilities include:

• URL Filtering by Content Category
  You can define policies that restrict or allow Web sites based on their categorization. The Barracuda Web Filter includes definitions for 57 content categories, including pornography, violence, hacking, sports, news, dating, and chat sites.
• URL filtering by Domain Name or URL Pattern
  You can customize your content filtering policy to restrict certain Web sites, or look for specific patterns in Web site addresses. Advanced administrators can specify URL patterns to block using the very powerful UNIX regular expression (regexp) syntax.
• Image Safe Search Integration (URL Rewriting)
  The Barracuda Web Filter takes advantage of the "safe search" content filtering capabilities built into image search engines, such as Google, Yahoo, and MSN. If enabled, the Barracuda Web Filter Image Safe Search feature rewrites URLs for these image search engines to include the URL parameters that restrict display of objectionable content in cached image search results.
• File Type Blocking
  You can define policies to restrict downloading of files over the Web based on their MIME types. For example, to block downloads of executables, you can block MIME type application/octet-stream.

These controls can be combined to govern Internet usage to increase productivity, reduce exposure to offensive material, and to prevent visits to sites that could compromise security.

Internet Application Blocking

The Barracuda Web Filter also enables you to enforce policies governing usage of applications that access the Internet, unlike pure HTTP proxy solutions. Features include:

• Instant Messaging (IM) Blocking
  The Barracuda Web Filter enables you to set policy governing usage of public IM clients, including AIM, ICQ, Yahoo! Messenger, and MSN Messenger, and ICQ. These public IM clients can not only provide means for unmonitored communications, but their security vulnerabilities are often the target of those in the hacking community. Blocking public IM communications outright is one strategy to secure information flow and increase network security.
• Application Blocking
  In addition to IM applications, the Barracuda Web Filter includes policies for popular applications that access the Internet, including Internet music applications, software updaters, and popular browser toolbars.
• IP & Port Blocking
  You can customize your own IP blocking policies based on any combination of source or destination network IP address ranges and ports. One common usage of this feature is to prevent compromised machines from accessing the Internet.

The combination of Web and other Internet application blocking techniques enables you to define and implement complete Internet usage policies for your organization.

Advanced Policy Creation

Supporting extremely granular applications of policies (time-based policies) by user, group, or IP address range, the Barracuda Web Filter allows you to create rules that apply to different constituencies in your organization. Features include:

• Default Guest & User Policies
  For rapid deployment, the Barracuda Web Filter comes preconfigured with default guest (unauthenticated user) and known user (authenticated user) policies. You can easily customize default policies for content filtering and application blocking with simple easy-to-use Web forms.
• User & Group Policy Exceptions
  You can customize policies by defining exceptions on top of the default policies. Policy exceptions can apply to content filtering and application blocking rules, and they can apply to specific users, groups, or network IP address ranges. For example, you can set a default policy to block Web access to job sites but create an exception for the Human Resources group to allow them.
• Integration with LDAP Directory Servers
  The Barracuda Web Filter integrates with popular LDAP directory servers, including Microsoft Active Directory, IBM Lotus Domino Directory, and Novell eDirectory. This integration provides the Barracuda Web Filter with real-time access to user and group membership managed by the directory server. You can define policies that apply to LDAP users and groups.
• Integration with Windows Domain Controllers
  Included with the Barracuda Web Filter is the Barracuda DC Agent, software that can be installed on your Windows Domain Controller. This software provides the Barracuda Web Filter with the username logged at each IP address, and it enables proper application of policy without requiring any user intervention and without a separate login.
• Local users and groups
  For sites that do not use directory servers or who wish to define policies for users and groups not managed by the directory server, the Barracuda Web Filter supports the creation of local users and groups on which to apply policy.
• Network IP address groups
  You can define policies that only apply to certain network IP address ranges or subnets.
• Time-based Policy Exceptions
  You can define policy exceptions for both content filtering and application blocking based on time-of-day. For example, you can set a default policy to block access to sports sites but to allow browsing during non-working hours.

The Barracuda Web Filter was designed with ease of deployment in mind. With default policies, even organizations new to Web filtering can get started quickly.

Organizations with more advanced filtering requirements can take advantage of advanced policy exceptions and integration with enterprise infrastructure.

Integrated Spyware and Virus Protection

The Barracuda Web Filter includes best-of-breed spyware and virus protection leveraging its heritage as a leading anti-spyware solution. Capabilities include:

• Blocking access to known spyware sites
  As a first line of defense against spyware, the Web Filter blocks access to sites known to host spyware.
• Blocking Spyware Downloads
  The Barracuda Web Filter blocks spyware installed without the user's knowledge or consent - also known as drive-by installs or downloads - as well as any installations from known spyware Web sites.
• Integrated Anti-virus Protection
  In addition to blocking spyware, the Barracuda Web Filter provides complete virus protection for all downloads. By utilizing dual layer virus blocking, decompression of archives and file-type blocking, the anti-virus engine in the Barracuda Web Filter further protects your network from crippling threats.
• Detection and Blocking of Spyware Activity
  The Barracuda Web Filter secures the organization by detecting spyware access to the Internet, blocking it, and notifying the administrator.
• Spyware/Malware Removal
  The Web Filter includes the Barracuda Spyware Removal Tool, an ActiveX download that removes identified threats from Windows computers.

By combining anti-virus and anti-spyware at the gateway with desktop spyware removal, the Barracuda Web Filter offers a unique approach to providing universal network protection from malware in a simple, easy-to-use appliance.

Simplified and Centralized Administration

Featuring an easy-to-use web interface, the Barracuda Web Filter allows for easy and cost effective administration of the appliance. It allows you to control, manage, and define corporate spyware and web security policies from a central location.

• Barracuda Energize Updates
  A team of security engineers at Barracuda Central continuously monitors the Internet for trends in spyware and virus attacks. As they detect trends, updates are created for the Barracuda Web Filter. The Barracuda Web Filter is then automatically updated with new spyware Web sites, spyware rules, spyware algorithms, and virus definitions. These updates require zero administration and ensure that your network has comprehensive and accurate protection even as the spyware methods of distribution change.
• Logs and Graphical Reports
  System administrators can view logs or generate graphical reports to provide visibility within the organization. The Barracuda Web Filter can provide information on infected clients, downloaded spyware and viruses, top blocked spyware Web sites, and more.
• No Per User Charges
  Barracuda Web Filter pricing is simple. Each of the Barracuda Web Filters is designed to handle an approximate number of users. The Barracuda Web Filter includes a robust feature set at one fixed price with no per user charges. This means the system administrator no longer has to worry about keeping track of new accounts.