Microsoft Internet Security and Acceleration Server 2006 (ISA Server 2006) is an integrated web proxy and firewall product, commonly used for outbound Internet access and securely publishing intranet websites to the Internet.

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ISA Server NLB and HTTP 403 errors

I have an ISA Server 2006 Enterprise Edition NLB array and, intermittently, users connecting through one of the two servers get an ISA Server 403 (Forbidden) error message: Technical Information (for ...