TELNET

TELetype NETwork protocol is a network protocol for remote terminal connection

Telnet server is not encrypted, making it an easy target for attackers.

TELNET client, allows you to connect to and communicate with a remote system and issue text commands. Although initially it was used for remote administration, we can use telnet to connect to any server listening on a TCP port number.

quit to close connection

GET / HTTP/1.1 and Host: anything

Host: telnet

On some servers, you might get the file without sending Host: anything

To get file.html, you would send GET /file.html HTTP/1.1,

Or just GET /file.html might work depending on the web server in use. This approach is efficient for troubleshooting as you would be “talking HTTP” with the server.