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Telnet HTTP: HTTP Check Port 80 with the Telnet Command You can check your webserver on HTTP port 80 with the following telnet command: Open a command line and type telnet www.your-server.com 80 If your server is online a test connection will be established on port 80 (HTTP). Now you can type a GET command. The server will answer with an output like this: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <HTML><HEAD> <TITLE>501 Method Not Implemented</TITLE> </HEAD><BODY> <H1>Method Not Implemented</H1> get to /index .html not supported.<P> Invalid method in request get<P> </BODY></HTML> Connection to host lost. The better way to Check Port 80 (free tool) If you would like to check your Webserver at regular intervals, you can use SLCheck. SLCheck is a command line utility that connects to the Webserver and checks the answer. Batch files can be executed in dependance of the result. Try the following command: SLCheck -p 80 -a www.your-server.com -r "HTTP/1.1 200 OK" In dependence of the returned answer string you can execute a batch file for further actions, e.g. to send an alarm notification. All the results are logged in a logfile. You can monitor your webserver by running SLCheck as a scheduled task, e.g. once a minute.
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