
Appendix A
Windows TCP/IP Installation Dialog
During the installation process, a prompt window may appear indicating that
some of your TCP/IP parameters are not configured for optimal server perfor-
mance (see the figure below). Should this prompt appear, please follow the
steps below:
Selecting Yes will change HKEY_LOCAL_MACHINE\SYSTEM\CurrentCon-
trolSet\Services\Tcpip\Parameters
in Windows registry by editing the following two keys:
MaxUserPort REG_DWORD Value=65000 (decimal) and
TcpTimedWaitDelay REG_DWORD Value=60 (decimal)
The first parameter controls the maximum port number used when a c lient
application requests any available user port from the system. The default value
is 5,000, where the default ports are between 1024 and 5000 (leaving 3,976
available ports).
The second parameter determines how long a closed port will wait until it is
reused.
When computers that run Windows NT clients use an excessive number of
ports (more than 3,976 at a time, as may be the case in larger enterprises),
A–1
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