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HP Norton Personal Firewall 2003 Enable or disable Ad Blocking, Blocking by location

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96Blocking Internet advertisements

Enable or disable Ad Blocking

Blocking by location

See “Keeping current with LiveUpdate” on page 53.

Every file on the Internet has a unique address or URL. When you view a Web page, your computer connects to a URL and displays the file that is stored there. If the page points to graphics, audio files, and other multimedia content, your browser displays the files as part of the page.

When you go to a Web page that includes a banner ad, the instructions used to display the page might include the following:

<p>Greetings from the Ajax company<img src="http://www.ajax.com/ nifty_images/image7.gif">

Your browser displays the text Greetings from the Ajax company on the screen. Then it connects to www.ajax.com and requests a file called /nifty_images/image7.gif. (The suffix .gif indicates that this is a Graphics Interchange Format file, a common image file format.) The computer at www.ajax.com sends the file to the browser, which displays the image.

When Ad Blocking is enabled and you connect to a Web site, Norton Personal Firewall scans Web pages and compares their contents to two lists:

1A default list of ads that Norton Personal Firewall blocks automatically. Use LiveUpdate to keep the list of blocked ads current.

1A list that you create as you block specific ads. You can add to and change this list.

If the page includes files from a blocked domain, Norton Personal Firewall removes the link and downloads the rest of the page.

Enable or disable Ad Blocking

Norton Personal Firewall searches for the addresses of the ads that are being blocked as the Web page is downloaded by your browser. If it finds an address that matches the list of ads to block, it removes the ad so that it does not appear in your browser. It leaves the rest of the Web page intact so that you can view the page without the advertisements.

To enable or disable Ad Blocking

1Open Norton Personal Firewall.

Contents

User’s Guide Norton™ Personal Firewall User’s Guide Copyright Notice Trademarks SYMANTEC LICENSE AND WARRANTY 1. LICENSE: YOU MAY: YOU MAY NOT: 2. CONTENT UPDATES: 5. DISCLAIMER OF DAMAGES: 6. U.S. GOVERNMENT RESTRICTED RIGHTS: 7. GENERAL: Contents Chapter Responding to emergencies About Norton Personal Firewall Installing Norton Personal Firewall Norton Personal Firewall basics Keeping current with LiveUpdate Controlling access to protected computers Guarding against intrusion attempts Protecting your privacy Chapter 9 Blocking Internet advertisements Chapter 10 Monitoring Norton Personal Firewall Appendix Troubleshooting Norton Personal Firewall About the Internet Understanding Internet risks Glossary Service and support solutions Index CD Replacement Form Responding to emergencies If you think your computer is under attack Recover from an emergency Prevent future problems Page About Norton Page Page Page Installing Norton Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Firewall basics Access Norton Personal Firewall Norton Personal Firewall Access Norton Personal Firewall from the system tray Work with Norton Personal Firewall Customize Use the Security Monitor Security Monitor Select a task with the Security Monitor Learn more with the Alert Assistant Adjust the Alerting Level Use Alert Tracker Options Internet Security Show the Alert Tracker Hide Alert Tracker Check your computer’s vulnerability to attack Security Check Security Test Security Scan for Security Risks Identify the source of communications 3Click Attacker Details 3Click View Logs Connections Intrusion Detection Stop Internet communication with Block Traffic Block Traffic Allow Traffic Customize Norton Personal Firewall About Global Settings About User Settings About Ad Blocking settings Password-protectoptions Temporarily disable Norton Personal Firewall For more information Window and dialog box Help Norton Personal Firewall Release Notes Use the User’s Guide PDF 2Click Browse CD Manual Acrobat ar500enu.exe About Norton Personal Firewall on the Web Explore online tutorials 3Click continue Subscribe to the Symantec Security Response newsletter Newsletter Subscribe Keeping current with LiveUpdate About program updates About protection updates About your subscription When you should update If you run LiveUpdate on an internal network If you can’t use LiveUpdate Obtain updates using LiveUpdate Set LiveUpdate to Interactive or Express mode Configure Interactive Mode Turn off Express mode Symantec LiveUpdate Run LiveUpdate automatically Page Page Control how people use your computer Enable file and printer sharing General Rules Modify Permit Internet access Organize computers into network zones Wizard Setup Home Networking Add Identify computers to Norton Personal Firewall Find a computer’s IP address Specify an individual computer Specify a range of computers Specify computers using a network address If you use DHCP Control how users access the Internet Control how outside users access your network If you run a Virtual Private Network Guarding against intrusion attempts How Norton Personal Firewall protects against network attacks How Norton Personal Firewall protects against network attacks Norton Personal Firewall monitors communications Intrusion Detection analyzes communications packet Visual Tracking locates attackers Customize firewall protection 3Move the slider to the Security Level that you want. Your options are: Change individual security settings To change individual security settings 3Click Custom Level 4Do one or more of the following: 2 On the Personal Firewall menu, select a level. Your options are: Customize firewall rules Enable Automatic Program Control Scan for Internet-enabledprograms Manually add a program to Program Control Change Program Control settings Manually add a firewall rule Write a firewall rule 4Select the type of connection the rule should monitor. Your options are: 6Select the computers the rule should monitor. Your options are: 8Select the protocols the rule should monitor. Your options are: 9Select the ports the rule should monitor. Your options are: 10Click Next Change an existing firewall rule Change the order of firewall rules Temporarily disable a firewall rule Remove a firewall rule Customize Intrusion Detection Signatures Exclude Include Enable or disable AutoBlock Turn on AutoBlock Unblock computers Unblock Unblock All Exclude computers from AutoBlock IP Address Restrict a blocked computer 4Click Restrict Protecting your privacy Identify private information to protect Privacy Control and SSL Add private information Private Information Edit Private Information Customize Privacy Control Change the Private Information setting Change the Cookie Blocking setting Enable or disable Browser Privacy Disable or enable secure Web connections Blocking Internet advertisements How Ad Blocking works Enable or disable Ad Blocking Enable or disable Popup Window Blocking Enable or disable Flash blocking Use the Ad Trashcan Use text strings to identify ads to block or permit How to identify Ad Blocking strings Add an Ad Blocking string Modify or remove an Ad Blocking string Page Monitoring Norton Page Page Page Page Page Page Page Troubleshooting Firewall Troubleshoot Norton Personal Firewall problems Internet service provider Problem Solution Why can’t I post information online Why did an email message I sent never arrive Why can’t I connect to the Internet via my cable modem Default Inbound NetBIOS Name How can a Web site get my browser information Page About the Internet How information is transmitted over the Internet Page How Web information is located on the Internet Requesting a page Understanding URLs How ports identify programs on servers Well-knownports How computers are identified on the Internet Page Understanding Internet risks Risks from hackers Information gathering Initial access Privilege escalation Covering tracks Risks from active content Risks from inappropriate content and activities Risks to your privacy Good cookies Bad cookies Risks from Trojan horses and viruses The likelihood of being attacked Glossary Page Page Page Page Page Page Page Service and support solutions Customer service Technical support Subscription policy Worldwide service and support Page Index Page Page Page Page Page FOR CD REPLACEMENT FORM OF PAYMENT ** (CHECK ONE): MAIL YOUR CD REPLACEMENT ORDER TO: