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What is the default port number of TCP protocol?
The default port number of TCP protocol is 80.

Viewport?

To view the ports in windows 2000/xp/server 2003, you can use the netstat command:?

Click "Start → Run" in turn, enter "cmd" and press enter to open the command prompt window. Type "netstat -a -n" at the command prompt, and then press Enter to view the port number and status of tcp and udp connections displayed in digital form.

Tip: How to use the netstat command?

Command format: netstat -a -e -n -o -s?

-a shows all active tcp connections and tcp and udp ports that the computer listens to. ?

-e indicates the number of bytes and packets sent and received by Ethernet. ?

-n indicates that only the addresses and port numbers of all active tcp connections are displayed in digital form. ?

-o displays the active tcp connections, including the process id(pid) of each connection. ?

-s indicates that statistics of various connections, including port numbers, are displayed by protocol.