ISA Server 2004 SP2 introduces HTTP compression. The configuration settings for HTTP compression apply to all HTTP traffic that passes through ISA Server to or from the specified sets of source and destination IP addresses, rather than to traffic handled by a specific rule. These settings are included in the Web Proxy configuration. Except for the settings that specify the minimum packet size and enable range compression, these settings can be configured in ISA Server Management. With SetCompConfig.vbs, you can configure the minimum packet size and range compression.