Telnet port 80 whilst specifying Hostname
Telnetting to port 80 is very useful in diagnosing whether or not a website is running in more discrete terms than using a browser however if you need to specify a specific hostname telnet cannot do this of course as there is no ability to mention a hostname in the GET statement. Curl can do this of course but if you are on a machine that does have it installed you can achieve this by using the HTTP 1.1 syntax within telnet.
This example views the 301 redirect from goodacre.name to ben.goodacre.name :
user@host:~$ telnet ben.goodacre.name 80 Trying 18.104.22.168... Connected to goodacre.name. Escape character is '^]'. GET / HTTP/1.1 Host: goodacre.name HTTP/1.0 301 Moved Permanently Date: Mon, 19 Apr 2010 10:49:13 GMT Server: Apache/2.2.4 (Ubuntu) PHP/5.2.3-1ubuntu6.3 Location: http://ben.goodacre.name/ Content-Length: 332 Content-Type: text/html; charset=iso-8859-1 X-Cache: MISS from localhost X-Cache-Lookup: MISS from localhost:80 Via: 1.0 localhost (squid/3.0.PRE6) Connection: close <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>301 Moved Permanently</title> </head><body> <h1>Moved Permanently</h1> <p>The document has moved <a href="http://ben.goodacre.name/">here</a>.</p> <hr> <address>Apache/2.2.4 (Ubuntu) PHP/5.2.3-1ubuntu6.3 Server at goodacre.name Port 80</address> </body></html> Connection closed by foreign host.
Note: Enter must be pressed twice after specifying the Host: domain.com line.