| Windows Filtering Platform
The Windows Filtering Platform (WFP) that was introduced in Windows Vista and Windows Server 2008 provides APIs to third-party independent software vendors (ISVs) to create packet processing filters. Examples include firewall and antivirus software. Note that a poorly written WFP filter significantly decreases a server’s networking performance. For more information about WFP, see "Resources" later in this guide.
The following registry keywords in Windows Server 2003 are no longer supported and are ignored in Windows Server 2008 and Windows Server 2008 R2:
TcpWindowSize
HKLM\System\CurrentControlSet\Services\Tcpip\Parameters
NumTcbTablePartitions
HKLM\system\CurrentControlSet\Services\Tcpip\Parameters
MaxHashTableSize
HKLM\system\CurrentControlSet\Services\Tcpip\Parameters
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