this question is always rise. How can i know what ports are currently reserved in windows XP/2003 and what service had reserved them.

for example when i want to install Apache, default port will be 80, but sometimes the Server will have IIS installed on the same port.

so i want to know the way to check the ports and what services had reserved them and also if there is a way to re assign those ports to different services.

thank you

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Try PortQry and see if this helps you find what you're after.

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thanks, but it didint help so much. i have apache at port 80 and i have tomcat at port 8080 but it didnt list them in the reserved ports – bogha Sep 10 '10 at 13:18
it worked, but is there a way to stop a service from using a port and then assign that port to another service? – bogha Sep 10 '10 at 13:32
also, it displays the general Services, for example port 80 is for HTTP but it didnt specify which unit or service is occupy it ( IIS or apache or another one ) is there any way to accomplish this ? – bogha Sep 10 '10 at 14:16
From what I see it links the port to the process id so you can run a query and match up what you're looking for from the output. I haven't used it a lot, just thought it might find what you were looking for. – Mitch Sep 10 '10 at 19:44
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