Port 80 is the HTTP server. If you'd read up on the HTTP protocol, it works by the client first sending commands, and only after this is done the server responds (repeat as necessary).
Try this: telnet 192.168.1.22 80. As soon as it's connected, enter "HEAD / HTTP/1.0" followed by hitting return twice. In the output, look for a line like this
Code:
Server: Apache/2.2.3 (Linux/SUSE)
