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HP Norton Personal Firewall 2003 Why can’t I post information online, Why did an email message I sent never arrive, email, Problem, Solution, Internet service provider

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See “Temporarily disable Norton Personal Firewall” on page 47.

Troubleshooting Norton Personal Firewall 113

Troubleshoot Norton Personal Firewall problems

If you need to view the site, disable Norton Personal Firewall and try the Web site again. Keep in mind that when you disable Norton Personal Firewall, your computer may be vulnerable to Internet attacks.

If you cannot connect to a Web site with Norton Personal Firewall disabled, there might be a problem with the Internet or your Internet service provider.

Problem	Solution

It could be Cookie	Many Web sites require that cookies be enabled on your
Blocking	computer to display correctly.
	See “Change the Cookie Blocking setting” on page 93.

It could be a	A firewall rule might be blocking the Web site. When this
firewall rule	happens, you will usually see a message saying that you
	could not connect.
	See “Customize firewall protection” on page 72.

It could be Ad	Sometimes blocking advertisements on the Internet prevents
Blocking	an entire Web site from appearing in your browser.
	See “Blocking Internet advertisements” on page 95.

It could be ActiveX	Some Web sites display only ActiveX controls or Java applets.
or Java blocking	If you are blocking them, nothing appears on these sites.
	See “Change individual security settings” on page 73.

It could be Flash	Some Web sites use Macromedia Flash to create interactive
blocking	front pages. If you are blocking Flash, nothing appears on
	these sites.
	See “Enable or disable Flash blocking” on page 98.

Why can’t I post information online?

See “Identify private information to protect” on page 89.

If you are unable to post information to a Web site, it may be because Privacy Control is blocking the information. Check the Private Information list in the Privacy window to see if the information that you are trying to enter is being blocked.

Why did an email message I sent never arrive?

If you choose to block an email message containing private information, Norton Personal Firewall immediately deletes the email message. Your email program will indicate that the message was sent, but the recipient will not receive it.

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: