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        Dynamic Port Range in Windows Server 2008

Section(s): Networking, Network
Published on Dec 09, 2008.
Last Modified on Dec 09, 2008.
Last Modified by Nirmal Sharma.
Rated 1 out of 5 based on 1 votes.

This article explains the default Dynamic Port range in Windows Server 2008 and how to see the range using the NetSH command line tool.

Dynamic Port Range is reserved by the Operating System. This range is assigned by the Internet Assigned Numbered Authority (IANA). The applications can't hard-code this port range for network communication. Microsoft developers have increased the default Dynamic Port range in Windows Vista and Windows Server 2008. The range is:

49152 through 65535
For Windows Vista and Windows Server 2008
1024 through 5000
For Windows 2003 and earlier

To show the Dynamic Port Range:

Netsh int, ipv4 show dynamicport udp
Netsh int, ipv4 show dynamicport tcp
Netsh int, ipv6 show dynamicport udp
Netsh int, ipv6 show dynamicport tcp

To set the Dynamic Port Range:

Netsh int, ipv4 set dynamicport tcp start=xxxxx num=xxxxx
Netsh int, ipv4 set dynamicport udp start=xxxxx num=xxxxx
Netsh int, ipv6 set dynamicport tcp start=xxxxx num=xxxxx
Netsh int, ipv6 set dynamicport udp start=xxxxx num=xxxxx

About Nirmal Sharma

Nirmal is a Microsoft MVP in Directory Services and working as a Technical Architect/Consultant. He has been involved in Microsoft Technologies since 1994 and followed the progression of Microsoft Operating Systems and software. He is specialized in Directory Services, Microsoft Clustering, SQL, MOM, Exchange and Citrix. In his spare time, he likes to help others and write "internal" technical articles, white papers and tips on various Microsoft technologies. You can contact him at nirmal_sharma@mvps.org.