Barracuda Web Filter Administrator’s Guide Version 3.3 Barracuda Networks Inc. 3175 S. WInchester Blvd Campbell, CA 95008 http://www.barracuda.
Copyright Notice Copyright 2004-2008, Barracuda Networks www.barracuda.com v33-080413-01-0413 All rights reserved. Use of this product and this manual is subject to license. Information in this document is subject to change without notice. Trademarks Barracuda Web Filter is a trademark of Barracuda Networks, Inc. All other brand and product names mentioned in this document are registered trademarks or trademarks of their respective holders.
Administrator’s Guide Contents C h a p t e r 1 – I n t r o d uc ti on . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spyware-blocking techniques . . . . . . . . . . . . . . . . . . . . . Content-filtering techniques . . . . . . . . . . . . . . . . . . . . . . User and group-based policy control . . . . . . . . . . . . . . . . . Application-blocking techniques. . . . . . . . . . . . . . . . . . . .
Barracuda Web Filter Release 3.3 Setting up linked management . . . . . . . . . . . . . . . Data propagated to the linked systems . . . . . . . . Switching a system to standby mode . . . . . . . . . Controlling access to the Web interface. . . . . . . . . . . Customizing the appearance of the Web interface . . . . . Changing the language of the Web interface . . . . . . . . Setting the time zone of the system . . . . . . . . . . . . . Enabling and disabling virus protection . . . . . . . . . . .
Administrator’s Guide C h a p t e r 4 – M a na g i n g U s e r s a n d G r o u ps . . . . . . . . . . . . . . 53 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . About local users . . . . . . . . . . . . . . . . . . . . . . . . . . . . About domain users . . . . . . . . . . . . . . . . . . . . . . . . . . . Creating local users and groups . . . . . . . . . . . . . . . . . . . . . . Creating local user accounts . . . . . . . . . . . . . . . . . . . . . . Creating local groups . .
Barracuda Web Filter Release 3.3 I n d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction This chapter provides an overview of the Barracuda Web Filter and includes the following topics: • Overview on page 8 • Deploying the Barracuda Web Filter on page 11 7
Barracuda Web Filter Release 3.3 Overview The Barracuda Web Filter is an integrated anti-spyware and content filtering solution that eliminates spyware and other forms of malware from your organization. The Barracuda Web Filter combines preventative, reactive, and proactive measures to form a complete anti-spyware solution.
Administrator’s Guide The Barracuda Web Filter scans inbound traffic for the following malware over HTTP port 80 and FTP port 21: spyware (such as keyloggers, Browser Helper Objects [BHOs], and data miners), adware, trojans, and viruses. The Barracuda Web Filter also scans outbound traffic on all ports and protocols to prevent spyware from communicating outside of your network.
Barracuda Web Filter Release 3.3 The following figure shows how Barracuda Central provides the latest rules and definitions through the Energize Update feature. Figure 1.
Administrator’s Guide Deploying the Barracuda Web Filter You can deploy your Barracuda Web Filter so it is either inline with your core network components, or you can deploy the system as a forward proxy. The following sections provide a brief overview of each deployment type. Inline pass-through (transparent) mode Inline pass-through is the recommended type of deployment because it provides the strongest level of protection against spyware.
Barracuda Web Filter Release 3.3 Figure 1.
Administrator’s Guide Forward proxy The forward proxy deployment uses a proxy as an intermediary between a client and the Internet to protect the client from being visible from the Internet. In a forward proxy deployment, only HTTP Internet traffic passes through the Barracuda Web Filter. After the Barracuda Web Filter processes clients’ requests, it sends the requests out directly to the Internet.
Barracuda Web Filter Release 3.3 Figure 1.
Chapter 2 Installation and Configuration This chapter provides general instructions for installing the Barracuda Web Filter. This chapter covers the following topics: Network considerations ...................................................................... 16 Installing and configuring the Barracuda Web Filter .......................... 18 Advanced installation topics ...............................................................
Barracuda Web Filter Release 3.3 Network considerations The Barracuda Web Filter appliance is a low-risk deployment because it is designed to be a bridge within your network. The appliance can view Internet traffic that passes through the network but does not affect its routing. To reduce the risk of interfering with important network traffic, initially set the Barracuda Web Filter to monitor and log the spyware activity only.
Administrator’s Guide Firewall DMZ A demilitarized zone (DMZ) is an area where any servers that access the Internet are placed. Servers inside this zone may be configured to access certain servers within an internal network with their own security rules set up. Normally these servers need to be accessible from the Internet such as email servers. The Barracuda Web Filter should not be deployed to protect these machines.
Barracuda Web Filter Release 3.3 Installing and configuring the Barracuda Web Filter These are the general steps to set up your Barracuda Web Filter. For more detailed instructions for each step, see the following reference pages. Step 1. Verify that you have the necessary equipment on page 18 Step 2. Install the Barracuda Web Filter on page 18 Step 3. Configure the Barracuda Web Filter IP and network settings on page 19 Step 4. Configure your corporate firewall on page 20 Step 5.
Administrator’s Guide Figure 2.1: Connecting the Barracuda Web Filter to your Network The Barracuda Web Filter supports 10BaseT, 100BaseT, and Gigabit Ethernet (higher end models only). Do not connect any other cables to the unit. The connectors on the back panel are for diagnostic purposes. 3.
Barracuda Web Filter Release 3.3 To set a new IP address from the administrative console: 1. Connect your keyboard and monitor directly to the Barracuda Web Filter. 2. At the barracuda login prompt, enter admin for the login and admin for the password. The User Confirmation Requested window displays the current IP configuration of the Barracuda Web Filter. 3. Using your Tab key, select Change and click Enter to change the IP configuration. 4.
Administrator’s Guide To configure the Barracuda Web Filter: 1. From a Web browser, enter the IP address of the Barracuda Web Filter followed by port 8000. For example: http://192.168.200.200:8000. 2. To log into the administration interface, enter admin for the username and admin for the password. 3. Select BASIC > IP Configuration, and perform the following steps: 3a. Enter the IP address of your primary and secondary DNS servers (if these have not yet 3b. 3c. 3d. 3e. been set up).
Barracuda Web Filter Release 3.3 Updating the firmware may take several minutes. Do not turn off the unit during this process. Download Now is disabled if the Barracuda Web Filter is already up-to-date with the latest firmware version. The Barracuda Web Filter begins downloading the latest firmware version. You can view the download status by clicking Refresh. A message displays once the download is complete. 4. Click Apply Now when the download completes. 5.
Administrator’s Guide 3. Enable your subscription: 3a. Click the Activate link as shown in Figure 2.3. The product activation displays in a new browser window. Figure 2.3: Location of the Activate Link Click to activate your subscription 3b. In the Product Activation window, fill in the required fields and click Activate. A confirmation page opens to display the terms of your subscription. 3c.
Barracuda Web Filter Release 3.3 Step 10. Test and adjust the Barracuda Web Filter After connecting your Barracuda Web Filter to the network, verify connectivity. Open your Web browser from a machine on your network. If you cannot browse the Web, review the installation steps to make sure your Barracuda Web Filter is properly configured and connected to your corporate firewall and network switch. If you can browse the Web without any issues, you are ready to adjust the settings on the Barracuda Web Filter.
Administrator’s Guide Figure 2.4: Connecting the Barracuda Web Filter to your Network 2. Connect an Ethernet cable from the LAN port on the Barracuda Web Filter to your internal network switch Uplink port (if one is available). Note: If your switch records the MAC address of an external device, make sure you delete all pre-existing MAC address records from your switch. 3. Select BASIC > IP Configuration page in the administration interface, and set the Operating Mode setting to Active.
Barracuda Web Filter Release 3.3 Advanced installation topics This section describes advanced installation topics that may apply to your Barracuda Web Filter deployment. Inline pass-through with pre-existing proxy deployment Another deployment type that is much less common than either Inline mode or Forward Proxy mode is using the Barracuda Web Filter as an inline device that uses a pre-existing proxy server on your network.
Administrator’s Guide Figure 2.5: Inline Passthrough with Pre-existing Proxy Server Deployment Supported pre-existing proxy types Inline pass-through with proxy filtering requires client traffic to pass through the proxy server. Only traffic from the proxy IP address is visible to the Barracuda Web Filter. The Barracuda Web Filter checks each request to determine whether it is allowed or denied. The operation of a proxy can be classified as being a transparent proxy or a nontransparent proxy.
Barracuda Web Filter Release 3.3 the default port 80, this method captures most of the HTTP request traffic flowing through the network device. If you are installing a transparent proxy, the Barracuda Web Filter must be installed on the client side of the proxy. This position allows the Barracuda Web Filter to intercept all Internet traffic. • Nontransparent Proxies: Nontransparent proxy deployment refers to a deployment where the client is made aware of the proxy server’s existence.
Administrator’s Guide Figure 2.6: Proxy Behind the Barracuda Web Filter 2. Connect the Ethernet cable from your WAN port of your proxy server to the LAN port on the front panel of the Barracuda Web Filter. Note: A crossover cable may be needed if your corporate firewall does not have a switchable port and therefore cannot switch between RX and TX. Another solution is to place a switch between the corporate firewall and the Barracuda Web Filter. Note: You do not need to configure the WAN port.
Barracuda Web Filter Release 3.
Chapter 3 Configuring, Monitoring, and Managing the Barracuda Web Filter This chapter describes the configuration, monitoring, and management tasks you can perform from the administration interface. The following topics are covered: Configuring the Barracuda Web Filter ................................................ 32 Creating block and accept filters ........................................................ 36 Monitoring the Barracuda Web Filter .................................................
Barracuda Web Filter Release 3.3 Configuring the Barracuda Web Filter This section describes the configuration tasks you can perform from the administration interface. This section covers the following topics: Configuring system IP information..................................................... 32 Setting up linked management............................................................ 32 Controlling access to the Web interface..............................................
Administrator’s Guide 4. From the ADVANCED > Linked Management on Barracuda Web Filter 2: 4a. Enter the Cluster Shared Secret password and the Cluster Hostname. Click Save Changes. 4b. In the Linked Systems section, enter the IP address of the first Barracuda Web Filter, and click Join Cluster. 4c. Click Save Changes. 5. Refresh the ADVANCED > Linked Management page, and verify that: • Each system’s IP address appears in the Linked Systems list. • The status of each server is green. Figure 3.
Barracuda Web Filter Release 3.3 Switching a system to standby mode You can also use the ADVANCED > Linked Management page to switch a clustered system from Active to Standby mode. When a system is in standby mode, it does not synchronize its configuration with the other active systems in the cluster. We recommend switching a system to Standby mode when you need to: • Upgrade the firmware of all systems in a cluster.
Administrator’s Guide Enabling and disabling virus protection Use the BASIC > Virus Checking page to turn off virus scanning, which is not recommended. By default, virus scanning is automatically enabled, and the virus definitions are updated on a regular basis (hourly by default) using Energize Updates. When virus scanning is enabled, all traffic processed by the Barracuda Web Filter is scanned for viruses and any traffic that contains a virus is blocked.
Barracuda Web Filter Release 3.3 Creating block and accept filters This section describes the BLOCK/ACCEPT tab, which provides a wide range of filters that enhance the default spyware and virus detection capabilities of the Barracuda Web Filter. This section contains the following topics: Best practices ..................................................................................... 36 Filtering and blocking features ........................................................... 37 Content filtering.....
Administrator’s Guide Figure 3.
Barracuda Web Filter Release 3.3 You can use the Applications filter as a pre-emptive measure to protect your network against malware. For example, you may want to block the IRC application because this type of application often introduces BOTS into networks. BOTS are automated programs that repeatedly run specific tasks, and malicious BOTS activity is common in IRC communications. You can also use the application blocking feature when you hear about a virus spreading over a specific IM service or tool.
Administrator’s Guide MIME type blocking Use the BLOCK/ACCEPT > MIME Blocking page to specify standard MIME types that you want to block. Note: Web sites that are whitelisted are not subject to the MIME type blocking rules you create. Many organizations choose to block Internet radio and streaming media because they add load to the internal network, as well as executable files because they can install viruses and various other malware. To block Internet radio, which uses MPEG (.mpg, mpega, or .
Barracuda Web Filter Release 3.3 About the Barracuda Spyware Removal Tool The Barracuda Spyware Removal Tool performs a comprehensive scan of your computer for any traces of spyware or other malware. This scan is very thorough and takes several minutes to complete. After the analysis is complete, you can remove all the malware and traces of malware that have been found.
Administrator’s Guide Or you may want to create an exception policy that allows a subset of your users to access content that is blocked for other users. For example, some organizations configure their content filters to block access to Job Search and Career Development sites like Monster.com. However, your Human Resources department may require access to such sites.
Barracuda Web Filter Release 3.3 Limitations for HTTPS traffic filtering When the HTTPS traffic-filtering option is enabled, the following limitations apply: • If HTTPS access is denied, the user is not presented with a block page because the traffic is blocked at Layer 3. • If HTTPS access to a particular domain name is denied, HTTPS access to any subdomain of that same domain will also be denied for the same users. • For any filtering policy that is set to Warn, the HTTPS request is Blocked instead.
Administrator’s Guide Monitoring the Barracuda Web Filter This section describes the monitoring tasks you can perform from the administration interface and from the front panel of the Barracuda Web Filter. This section covers the following topics: Viewing performance statistics ........................................................... 43 Understanding the indicator lights ...................................................... 43 Viewing the traffic log.....................................................
Barracuda Web Filter Release 3.3 Figure 3.3: Indicator Lights Table 3.2 describes each indicator light. Table 3.2: Description of the Indicator Lights Light Color Description Spyware Access Red Blinks when the Barracuda Web Filter blocks installed spyware from accessing external sites. Spyware Download Yellow Blinks when the Barracuda Web Filter blocks a spyware application from being downloaded. Traffic Green Blinks when the Barracuda Web Filter processes traffic.
Administrator’s Guide You can perform the following operations on the Log page: • Apply filters to locate specific log entries • Refresh to update the log. The most recent entry is at the top of the list. • Clear the log to purge all the current entries. Viewing the application log The BASIC > Application Log page displays the log of all the Web application traffic processed by the Barracuda Web Filter.
Barracuda Web Filter Release 3.3 Automating the delivery of system alerts and notifications Use the BASIC > Administration page to configure the Barracuda Web Filter to automatically email system alerts to the email addresses you specify.
Administrator’s Guide Some of the tasks that the Barracuda Web Filter tracks include: • Linked management setup • Configuration restoration If a task takes a long time to complete, you can click Cancel next to the task name and then run the task at a later time when the system is less busy. The Task Errors section will list an error until you manually remove it from the list. The errors are not phased out over time.
Barracuda Web Filter Release 3.3 Managing the Barracuda Web Filter This section describes how to manage and maintain your Barracuda Web Filter using the administration interface.This section covers the following topics: Backing up and restoring system configuration .................................. 48 Updating the Barracuda Web Filter firmware ..................................... 48 Updating the spyware, virus, and category definitions ....................... 48 Replacing a failed system ................
Administrator’s Guide We recommend that the Automatically Update setting for your spyware and virus definitions be set to Hourly so your Barracuda Web Filter receives the latest definitions as soon as new threats are identified by Barracuda Central. Replacing a failed system Before you replace your Barracuda Web Filter, use the tools provided on the ADVANCED > Troubleshooting page to try to resolve the problem.
Barracuda Web Filter Release 3.3 Rebooting the system in recovery mode If your Barracuda Web Filter experiences a serious issue that impacts its core functionality, you can use diagnostic and recovery tools that are available at the reboot menu to return your system to an operational state. Before you use the diagnostic and recovery tools, do the following: • Use the built-in troubleshooting tools on the ADVANCED > Troubleshooting page to help diagnose the problem.
Administrator’s Guide Reboot options Table 3.3 describes the options available at the reboot menu. Table 3.3: Reboot Options Reboot Options Description Barracuda Starts the Barracuda Web Filter in the normal (default) mode. This option is automatically selected if no other option is specified within the first three seconds of the splash screen appearing.
Barracuda Web Filter Release 3.
Chapter 4 Managing Users and Groups This chapter explains how to manage users and groups on your Barracuda Web Filter. This chapter covers the following topics: Overview ............................................................................................ 54 About local users ......................................................................... 54 About domain users ..................................................................... 54 Creating local users and groups............................
Barracuda Web Filter Release 3.3 Overview The Barracuda Web Filter distinguishes between two basic classes of the users who access Web sites and Web applications from client machines that it has been configured to protect: local users and domain users. You can apply filtering and blocking policies as well as exception rules to both classes of users.
Administrator’s Guide Creating local users and groups This section describes how to create local accounts that you can assign to exception policies. This section contains the following topics: Creating local user accounts ............................................................... 55 Creating local groups.......................................................................... 55 Creating IP address groups .................................................................
Barracuda Web Filter Release 3.3 Integrating with a user authentication service You can integrate the Barracuda Web Filter with your existing authentication server to gain the following benefits: Web filtering policy exceptions can be applied to domain users—If you do not integrate with your LDAP or NTLM authentication server, you can apply filtering policy exceptions only to local users and groups that you create in the USERS/GROUPS tab.
Administrator’s Guide Communication between the LDAP domain controller servers and the Barracuda Web Filters in your network enable the Barracuda Web Filter to transparently track user login activity in your LDAP domains.
Barracuda Web Filter Release 3.3 End User c Primary Domain Controller d DC Agent f e Session Monitor g Barracuda Web Filter Restricted Content 1. A user logs into their domain and is authenticated by the domain controller. 2. The DC Agent keeps a record of the newly authenticated user. 3. The Session Monitor polls the DC Agent (every 15 seconds by default) and retrieves the latest list of authenticated users. 4.
Administrator’s Guide Enabling NTLM domain user authentication If your network uses an NT LAN Manager (NTLM) authentication server, your NTLM domain users transparently become authenticated in the Barracuda Web Filter using their Microsoft Windows credentials. This single sign-on (SSO) method of access control is provided by transparent proxy authentication against the your NTLM server.
Barracuda Web Filter Release 3.3 To enable NTLM user authentication To enable NTLM user authentication, go to the USERS/GROUPS > Authentication Services page and see the online help topic for NTLM.
Administrator’s Guide Viewing and managing accounts The USERS/GROUPS > Account View page displays all the user accounts that have either been created locally on your Barracuda Web Filter or that reside in your LDAP database.
Barracuda Web Filter Release 3.
Appendix A About the Barracuda Web Filter Hardware This appendix provides hardware information for the Barracuda Web Filter. The following topics are covered: Front panel of the Barracuda Web Filter............................................. 64 Back panel of the Barracuda Web Filter ............................................. 68 Hardware compliance .........................................................................
Barracuda Web Filter Release 3.3 Front panel of the Barracuda Web Filter Figure A.1, Figure A.2, and Figure A.3 illustrate the front panels for each model. Barracuda Web Filter 210, 310, and 410 Figure A.1 shows the front components as described in Table A.1. Figure A.1: Barracuda Web Filter 210, 310, and 410 Front Panel 1 2 34 567 8 9 Table A.1 describes the front components on the Barracuda Web Filter 210, 310, and 410. Table A.
Administrator’s Guide Barracuda Web Filter 610 Figure A.2 shows the front components as described in Table A.2. Figure A.2: Barracuda Web Filter 610 Front Panel 2 3 1 4 7 5 6 8 9 10 11 14 13 12 15 Table A.2 describes the front components on the Barracuda Web Filter 610. Table A.
Barracuda Web Filter Release 3.3 Barracuda Web Filter 810 and 910 Figure A.3 shows the front components as described in Table A.3. Figure A.3: Barracuda Web Filter 810 and 910 Front Panel 4 6 7 8 2 1 5 3 9 10 11 12 13 14 15 Table A.3 describes the front components on the Barracuda Web Filter 810 and 910. Table A.
Administrator’s Guide Table A.
Barracuda Web Filter Release 3.3 Back panel of the Barracuda Web Filter Figure A.4, Figure A.5, and Figure A.6 illustrates the back panels for each model. Barracuda Web Filter 210, 310, and 410 Figure A.4 shows the back components as described in Table A.4. Figure A.4: Barracuda Web Filter 210, 310, and 410 Back Panel 1 2 34 5 6 7 8 9 Table A.4 describes the back components on the Barracuda Web Filter 210, 310, and 410. Table A.
Administrator’s Guide Barracuda Web Filter 610 Figure A.5 shows the back components as described in Table A.5. Figure A.5: Barracuda Web Filter 610 Back Panel 1 34 5 2 6 7 8 Table A.5 describes the back components on the Barracuda Web Filter 610. Table A.
Barracuda Web Filter Release 3.3 Table A.6 describes the back components on the Barracuda Web Filter 810 and 910. Table A.
Administrator’s Guide Hardware compliance This section contains compliance information for the Barracuda Web Filter hardware. Notice for the USA Compliance Information Statement (Declaration of Conformity Procedure) DoC FCC Part 15: This device complies with part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received including interference that may cause undesired operation.
Barracuda Web Filter Release 3.
Appendix B Regular Expressions You can use regular expressions in many of the Barracuda Web Filter features. Regular Expressions allow you to flexibly describe text so that a wide range of possibilities can be matched. The following caveats apply when using regular expressions: • Be careful when using special characters such as |, *, '.' in your text. For more information, refer toUsing special characters in expressions on page 74. • All matches are not case sensitive. Table B.
Barracuda Web Filter Release 3.3 Table B.1: Common Regular Expressions Expression Matches... \s Space character: shortcut for [ \n\r\t] \S Non-space character: shortcut for [^\s] Miscellaneous ^ Beginning of line $ End of line \b Word boundary \t Tab character Using special characters in expressions The following characters have a special meaning in regular expressions and should be prepended by a backward slash ( \ ) when you want them interpreted literally: Table B.2: Special Characters .
Appendix C Limited Warranty and License Limited warranty Barracuda Networks, Inc., or the Barracuda Networks, Inc. subsidiary or authorized Distributor selling the Barracuda Networks product, if sale is not directly by Barracuda Networks, Inc., ("Barracuda Networks") warrants that commencing from the date of delivery to Customer (but in case of resale by a Barracuda Networks reseller, commencing not more than sixty (60) days after original shipment by Barracuda Networks, Inc.
Barracuda Web Filter Release 3.
Administrator’s Guide 4. This License is effective until terminated. This License is automatically terminated without notice if you fail to comply with any term of the License. Upon termination you must destroy or return all copies of the Barracuda Software. 5. YOU EXPRESSLY ACKNOWLEDGE AND AGREE THAT THE USE OF THE BARRACUDA SOFTWARE IS AT YOUR OWN RISK AND THAT THE ENTIRE RISK AS TO SATISFACTION, QUALITY, PERFORMANCE, AND ACCURACY IS WITH YOU.
Barracuda Web Filter Release 3.3 PRODUCT FOR A FULL REFUND. YOUR RIGHT TO RETURN AND REFUND EXPIRES 30 DAYS AFTER PURCHASE FROM BARRACUDA NETWORKS OR AN AUTHORIZED BARRACUDA NETWORKS RESELLER, AND APPLIES ONLY IF YOU ARE THE ORIGINAL PURCHASER.
Administrator’s Guide APPLICABLE FEE FOR THE UPGRADE; (2) USE OF UPGRADES IS LIMITED TO BARRACUDA NETWORKS EQUIPMENT FOR WHICH CUSTOMER IS THE ORIGINAL END USER PURCHASER OR LESSEE OR WHO OTHERWISE HOLDS A VALID LICENSE TO USE THE ENERGIZE UPDATE SOFTWARE WHICH IS BEING UPGRADED; AND (3) USE OF ADDITIONAL COPIES IS LIMITED TO BACKUP PURPOSES ONLY. Energize Update Changes.
Barracuda Web Filter Release 3.3 Restricted Rights. Barracuda Networks' commercial software and commercial computer software documentation is provided to United States Government agencies in accordance with the terms of this Agreement, and per subparagraph "(c)" of the "Commercial Computer Software - Restricted Rights" clause at FAR 52.227-19 (June 1987). For DOD agencies, the restrictions set forth in the "Technical Data-Commercial Items" clause at DFARS 252.227-7015 (Nov 1995) shall also apply.
Administrator’s Guide Open Source Licensing Barracuda products may include programs that are covered by the GNU General Public License (GPL) or other "open source" license agreements. The GNU license is re-printed below for you reference. These programs are copyrighted by their authors or other parties, and the authors and copyright holders disclaim any warranty for such programs. Other programs are copyright by Barracuda Networks.
Barracuda Web Filter Release 3.3 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License.
Administrator’s Guide 3.
Barracuda Web Filter Release 3.3 If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances.
Administrator’s Guide FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
Barracuda Web Filter Release 3.3 Barracuda Products may contain programs that are copyright (c)1995-2005 International Business Machines Corporation and others. All rights reserved.
Administrator’s Guide acknowledgment: "This product includes software developed by Computing Services at Carnegie Mellon University (http://www.cmu.edu/computing/).
Barracuda Web Filter Release 3.3 control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2.
Administrator’s Guide 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty.
Barracuda Web Filter Release 3.3 media, package the media, and mail the media. Please send a check payable in USA funds and include the program name. We will mail the packaged source code for any program covered under the GPL or other "open source" license.
Index A Custom Categories page 38 accounts, creating 55 Active mode 16, 25, 29 administration interface logging in 21 Administration page 34, 46, 49 alerts, email 46 Appearance page 34 Applications page 37 Audit mode 21 authentication server LDAP 56 NTLM 59 D B Energize Updates 9, 48 back panel details 68 backing up configuration 48 Backup page 48 Barracuda reboot option 51 Barracuda Spyware Removal Tool about 40 enabling 40 viewing a list of prompted clients 46 Barracuda Web Filter configuring 20, 3
Barracuda Web Filter Release 3.
