How to find what port a service is listening at

Reposted from Jens Vestergaard's blog with the authors permission.

In general, this can be used to find the port of any service that you might be interested in.
In my case I needed to setup a small testing scenario, involving a PC and a laptop. The PC containing an instance of SSAS that contains the data for the application.
So I needed to setup the firewall to allow the connection to SSAS from the laptop.
In order for me to do that, I needed the port number that the Analysis Services service is listening at. This can be found in two/three easy steps (should be almost the same on Windows 7 and Windows Server 2008 R2)

First you fire up your Task Manager:

From there launch the Resource Monitor and select the Network tab, then look at the TCP connections section:

or take a look at the Listening Ports section:

Jens has been working in the IT Industry since mid 90s. He started focusing in on the SQL Server Stack around 2003, mainly Analysis Services and the RDBMS. His blog is at http://www.t-sql.dk and he currently works for http://www.rehfeld.dk as a senior BI consultant.