How do I ping and telnet to test a tunneller connection?

Testing Network connection.

Ping: You can test if a network connection exists by pinging the other computer.

• Open a command prompt
  • Type “ping <Remote Machine Name or IP address>” and press enter.

Telnet: You should also test the connection using telnet as this allows you to specify the TCP port.

• Open a command prompt
• Type in "telnet <IP ADDRESS OF SERVER PC> <PORT>" and press enter.
  • For example, we would type “telnet 192.168.1.100 21379”
• If a blank screen appears then the port is open, and the test is successful.
• If you receive a connecting... message or an error message then something is blocking that port.  It could be the Windows firewall, a third party firewall like Norton's or a hardware firewall between the PCs.

What a successful test will tell you:

• If you can both ping and telnet to the other computer, this shows that there is a network connection and the port is open between the two computers.

What to do if you had problems during this test:

• Verify the computers are physically connected to the same network.
• Contact your Network Administrator. Their may be a firewall between the machines.
• The IP address should always be tested in case the host name could not be resolved.
• Some domains block telnet and ping as a security measure, and this test will not work in all cases.