by Robert Hashemian
TCP/IP Port Scanner
Note: Using this service for illegal, immoral, or unethical activities such as hacking is strictly prohibited.
This service comes with NO GUARANTEES of accuracy. No liability is assumed.
*** This page is monitored for abusive patterns. ***
What is the TCP/IP port (network port) scanner?
Type in the node/server/host name or IP address (IPv4 or IPv6), and specify a range or list of port numbers (maximum 10) to scan,
then hit 'Scan Ports' to get the info.
Computers connected to the Internet predominantly communicate with each other using the TCP/IP protocol. Port numbers are addresses by which applications can locate each other
once the computers establish network connection.
Port Scanner attempts to connect to the server and listen on the specified TCP port numbers.
A report is produced displaying the results of the scan.
Use this tool to inspect your own computer's TCP/IP ports and see what open network ports
hackers might discover on your machine. It is also a good troubleshooting tool for making sure desired network ports can be accessed externally.
To facilitate your inspection, use the netstat -a command from a shell or a
command (cmd) window on your computer, and make note of the ports that are
in a LISTEN state. Check those ports first with this tool, as they are good
candidates for a potential invader to gain access. You can also use the old reliable telnet program to check for open ports. For instance, to test port 80 (default HTTP port) on your server, issue the command
telnet your-host 80 and see if it responds.
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