What you need
- A proxy-server host name (for use in the telnet command)
- The port number of the proxy server (for use in the telnet command)
- The target server’s host name (for use in the CONNECT request)
- The port number of the target server (for use in the CONNECT request)
What to do
The initial telnet: > symbolises your shell prompt.
We will contact an SMTP server, but this is just an example; we could just as well connect to a POP, NNTP or other service.
telnet: > telnet proxy.example.com 8080 telnet: Trying 192.0.2.2... telnet: Connected to 192.0.2.2. telnet: Escape character is '^]'. client: CONNECT mx1.example.com:25 HTTP/1.0 server: HTTP/1.0 200 Connection established server: 220 mx1.example.com ESMTP server ready Thu, 5 Feb 2004 00:38:22 +0200