to find port number in windows 7 operating System,follow the instruction-
1)Choose Start→Control Panel. Click the System and Security link and then click Windows Firewall.
2)On the left, click the Advanced Settings link.
3)On the left, click Inbound Rules. Then, on the right, under Actions, click the New Rule link.
4)select the option marked Port and click Next.
5)In the Specific Local Ports box, type the ports you want to open, separated by commas, and then click Next.
6)Choose Allow the Connection and click Next.
7)Check the boxes for Private or any other desired network type, and then click Next.
8)Type a name (usually the name of whatever program required the opening). Click Finish.
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