ZONEALARM SECURITY ADVISORY Severity: High Workaround to Sudden Loss of Internet Access Problem Date Published : 8 July 2008 Date Last Revised : 14 July 2008 Overview : Microsoft Update KB951748 is known to cause loss of internet access for ZoneAlarm users on Windows XP/2000. Windows Vista users are not affected. Impact : Sudden loss of internet access Platforms Affected : ZoneAlarm Free, ZoneAlarm Pro, ZoneAlarm AntiVirus, ZoneAlarm Anti-Spyware, and ZoneAlarm Security Suite

Recommended Actions - Download and install the latest versions which solve the loss of internet access problem here (English only): Once you have installed the new version of your product go to "start > windows update" and re-install the Microsoft patch. ZoneAlarm Internet Security Suite ZoneAlarm Pro ZoneAlarm Antivirus ZoneAlarm Anti-Spyware ZoneAlarm Basic Firewall - or follow the directions below. Option 1: Move Internet Zone slider to Medium Navigate to the "ZoneAlarm Firewall" panel Click on the "Firewall" tab Move the "Internet Zone" slider to medium Option 2: Uninstall the hotfix Click the "Start Menu" Click "Control Panel", or click "Settings" then "Control Panel" Click on "Add or Remove Programs" On the top of the add/remove programs dialog box, you should see a checkbox that says "show updates". Select this checkbox Scroll down until you see "Security update for Windows (KB951748)" Click "Remove" to uninstall the hotfix Contact : Check Point customers who are concerned about information contained in this advisory or have additional technical questions may reach our Technical Support team at: http://www.zonealarm.com/store/content/support/support.jsp. To report security issues with Check Point products contact security-alert@checkpoint.com. Disclaimer : The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. Check Point and Check Point products, are registered trademarks of Check Point Incorporated and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners. Copyright : Check Point Software Technologies Ltd. www.checkpoint.com, is a leader in securing the Internet. The company is a market leader in the worldwide enterprise firewall, personal firewall, data security and VPN markets. Check Points PURE focus is on IT security with its extensive portfolio of network security, data security and security management solutions. Through its NGX platform, Check Point delivers a unified security architecture for a broad range of security solutions to protect business communications and resources for corporate networks and applications, remote employees, branch offices and partner extranets. 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