how telnet works

[Wilfred Chau_1]

Does anyone know any document that draws the whole picture of how telnet works?

[Kevin Wright]

the telnet protocol uses a naming service to locate the desired host(hosts/dns). the client connects to port 23 on the server, which through a rpc finds an open port > 1024 on the client and creates a socket..a combination of an ip address and a port #. this way, a server may have multiple connections on the same port 23, but all are different sockets.

[Frederic Soriano · Accepted solution]

Hi Wilfred,

RFC854 describes the standard telnet specification. You can retrieve it from the following URL:
http://www.faqs.org/rfcs/rfc854.html

For a general overview (shorter than RFC), have a look at:
http://www.scit.wlv.ac.uk/~jphb/comms/telnet.html

I hope you'll find these docs helpful.

Best regards.

Fred.