When Service Pack 2 is installed on a Windows XP system, the Windows Firewall is automatically activated on that system. The firewall can prevent a Symantec Antivirus Server, e.g. a system functioning as the antivirus server for Symantec AntiVirus Corporate Edition 8.0, from managing the Windows XP client. You will need to add an exception to the firewall settings on the client system to open UDP port 2967 access from the antivirus server.
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