$ telnet lurkmore.to 80 Trying 85.17.124.181... Connected to lurkmore.to. Escape character is '^]'. GET / HTTP/1.1 Host: lurkmore.to User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive HTTP/1.1 418 Server: nginx Date: Fri, 03 Oct 2014 12:11:27 GMT Content-Length: 0 Connection: keep-alive Connection closed by foreign host. $ mfw HTTP 418 I'm a teapot