When monitoring a telnet server, the program attempts to log into the server using specified login and password. In the case of the successfull login the program logs out and states that the server is available. If the login fails, the program states that the server is out of order.

Please specify the your telnet server IP address and port to allow the program to connect to the server in order to check it's availability. You can also set server authentication information as in is shown on the picture above if your telnet server requires user login and password.