Control Windows Treatment of Priority TCP/IP Data (Windows NT/2000/XP)

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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Control Windows Treatment of Priority TCP/IP Data (Windows NT/2000/XP)
Category: Home > Network > Protocols > TCP-IP

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This parameter determines whether TCP uses the RFC 1122 specification for urgent data or the mode used by BSD- derived systems. The two mechanisms interpret the urgent pointer in the TCP header and the length of the urgent data differently.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'TcpUseRFC1122UrgentPointer' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.


(Default)	REG_SZ	(value not set)
TcpUseRFC1122UrgentPointer	REG_DWORD	0x00000001 (1)


	HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters

Settings:

System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters]
Name: TcpUseRFC1122UrgentPointer
Type: REG_DWORD (DWORD Value)
Value: (0 = false, 1 = use RFC1122 method)

Related Tweaks

Control Windows Treatment of Priority TCP/IP Data (Windows 95/98/Me)

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last Modified: August 20, 2002

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