My Notes to Myself and Others... : TCP/IP

Free E-Book:Windows Server(r) 2008 TCP/IP Protocols and Services by Joseph Davies

Erik Rozman — Mon, 20 Oct 2008 21:14:32 GMT

MSPress is celebrating 25 years, so they are giving away free e-books (one per month).

This month it’s:

Windows Server(r) 2008 TCP/IP Protocols and Services by Joseph Davies

ARP cache timeout changed in Windows Vista and 2008

Erik Rozman — Sat, 13 Sep 2008 17:22:50 GMT

You might remember that Address Resolution Protocol (ARP) has a local cache that prevents
broadcasting for a system whose MAC address has been resolved. Older versions of
Windows used to have a timeout of 2 minutes for ARP entries (up to 10 minutes), this
has changed. Vista and 2008 has lowered this time to a random value between 15 seconds
and 45 seconds:

http://support.microsoft.com/kb/949589

Free TCP/IP book

Erik Rozman — Fri, 01 Aug 2008 07:51:28 GMT

Microsoft has placed a free TCP/IP fundamentals for download. Enjoy:

http://www.microsoft.com/downloads/details.aspx?FamilyID=c76296fd-61c9-4079-a0bb-582bca4a846f&DisplayLang=en

TCP/IP port range in Vista and Win2k8

Erik Rozman — Sat, 23 Feb 2008 16:19:54 GMT

According to KB929851 the dynamic range of TCP/UDP ports to be used by
applications on Vista or Win2k8 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

Windows Vista and Windows 2008 TCP/IP values

Erik Rozman — Fri, 25 Jan 2008 13:09:54 GMT

TCP/IP Configuration Settings

Changes to TCP/IP Registry Values

Settings Configurable Using the Registry Editor

Settings Configurable from the User Interface

Download here.