According to KB929851 the dynamic range of TCP/UDP ports to be used by applications on Windows Vista or Windows Server 2008 has changed from 1025 to 5000 to 49152 to 65535.

The port ranges can be viewed by using the following commands:

•netsh int ipv4 show dynamicport tcp

•netsh int ipv4 show dynamicport udp

•netsh int ipv6 show dynamicport tcp

•netsh int ipv6 show dynamicport udp

In addition to that the port ranges can be changed by using the following
commands:

•netsh int ipv4 set dynamicport tcp start=X num=Y

•netsh int ipv4 set dynamicport udp start=X num=Y

•netsh int ipv6 set dynamicport tcp start=X num=Y

•netsh int ipv4 set dynamicport udp start=X num=Y

Source:→ Microsoft

Microsoft, Windows Vista, WS2008, Win2K8, Windows Server 2008, TCP/IP, TCP/UDP, Port, Knowledgebase