Extracting Web Server Information using Telnet
Extracting Web Server Information using Telnet / by R a v e N
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http://blacksun.box.sk
Welcome to yet another BSRF tutorial. This time, I will teach you most basic command in the HTTP protocol, and how it is possible to extract tons of web server information and other pieces of info using this command only and a telnet client.
Okay, you are about to learn what your browser does when you type in, say, blacksun.box.sk. First of all, it connects to blacksun.box.sk on port 80. If there is an answer on the other hand, which means that the port is open (the port is not closed or blocked by any filtering software, such as a firewall) and a TCP session can start, your browser would usually type this:
get url HTTP/1.1
(followed by a blank line)