Windows Server

United States (English) Sign in

Print This Topic Print Multiple Topics

Home Windows Server 2012 Windows Server 2008 R2 Windows Server 2003 Library Forums

TechNet Library

Windows Server 2003

Deployment

Windows Server 2003 Deployment Guide

Windows Server 2003 Resource Kit Registry Reference

SYSTEM

Services Subkeys

Tcpip

Tcpip\Parameters Subkey

Parameters\KeepAliveInterval

KeepAliveTime

MaxUserPort

NumTcbTablePartitions

PPTPTcpMaxDataRetransmissions

PrioritizeRecordData

SackOpts

SynAttackProtect

Tcp1323Opts

TcpMaxConnectRetransmissions

TcpMaxDataRetransmissions

TcpMaxDupAcks

TcpMaxHalfOpenRetried

TcpNumConnections

TcpTimedWaitDelay

TcpUseRFC1122UrgentPointer

TcpWindowSize

DisableDynamicUpdate

DisableReplaceAddressesInConflicts

DisableReverseAddressRegistrations

DisableUserTOSSetting

EnableICMPRedirect

IGMPLevel

Adapters Subkey

Minimize

This topic has not yet been rated - Rate this topic

TcpMaxSendFree

Updated: March 28, 2003

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

TcpMaxSendFree

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Data type	Range	Default value
REG_DWORD	0 - 65535	5000

Description

Sets the size limit of the TCP header resource. On computers with ample RAM, increasing this limit can improve responsiveness during a SYN flood denial-of-service attack.

Activation Method

You must restart the computer for changes to this entry to take effect.

See Also

Concepts

TcpMaxHalfOpen
SynAttackProtect

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

Community Additions

© 2013 Microsoft

Manage Your Profile

|

Site Feedback

© 2013 Microsoft. All rights reserved.