Could any computer connect to your port 23? Or would be this connection refused? Do you have the port forwarding set up, and is any application answering on port 23?
Maybe you forget to start some software on your computer? Your router is forwarding to the correct IP address on your local network, your firewall is not blocking your open ports.
Use our free, online tool to check is your port open now!
How to check if my port is open? said 6 year/s ago: This free online tool (Is my port open?) is offline now - how to check my ports then?!
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