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Setting up a telnet server #73425 03/03/04 10:15 AM
Joined: Mar 2004 Posts: 1 Perth, Western Australia S Shayde OP Mostly harmless
OP Shayde Mostly harmless S Joined: Mar 2004 Posts: 1 Perth, Western Australia	Hi, my problem is this.. I can quite easily set up a telnet server and do everything I want it to do.. I intend to implement a logon system.. now.. here is my problem.. When you log on to the server using any telnet client, the password appears on the screen as you type it. Considering this is going to be a sort of shell... It's imperitive that the password doesn't appear. Any suggestions are much appreciated. Thanks, Shayde.

Re: Setting up a telnet server #73426 03/03/04 02:17 PM
Joined: Dec 2002 Posts: 349 Darwin, Australia S Skip Fjord artisan
Skip Fjord artisan S Joined: Dec 2002 Posts: 349 Darwin, Australia	Doing a quick dig on google reveals a 'hide-your-input' control code. I'm not sure of it exactly, looks like you're in for a lot of reading Sorry I can't be of more help.

Re: Setting up a telnet server #73427 03/03/04 05:17 PM
Joined: Sep 2003 Posts: 38 North America O Olathe Ameglian cow
Olathe Ameglian cow O Joined: Sep 2003 Posts: 38 North America	Look at the Telnet RFCs listed on Google, especially RFC 857. If you're really interested in TCP/IP-related things, check out TCP/IP Illustrated, Volume 1 (where I easily looked up how to make the aliases below) and later volumes. Code: ; Send IAC DO ECHO (255 253 1) to have the client echo keypresses to the user alias startecho sockwrite $1 $+($chr(255), $chr(253), $chr(1)) ; Send IAC DONT ECHO (255 254 1) to have the client hide keypresses alias stopecho sockwrite $1 $+($chr(255), $chr(254), $chr(1)) When using these, a Telnet client will generally respond with IAC WILL ECHO (255 251 1) or IAC WONT ECHO (255 252 1), so you'll need to handle or ignore these sequences in your sockread event.

Re: Setting up a telnet server #73428 03/03/04 08:41 PM
Joined: Sep 2003 Posts: 38 North America O Olathe Ameglian cow
Olathe Ameglian cow O Joined: Sep 2003 Posts: 38 North America	I got it backwards. You want to send that the server will handle echoing the password (and just don't send the characters back), then you want to send that the server will not handle echoing the text afterwards. So : Code: ; Send IAC WONT ECHO (255 252 1) to have the client handle the echoing alias showinput sockwrite $1 $+($chr(255), $chr(252), $chr(1)) ; Send IAC WILL ECHO (255 251 1) to have the server handle the echoing alias hideinput sockwrite $1 $+($chr(255), $chr(251), $chr(1)) Also, if you connect to a server that hides the password correctly, that is what you'll see.

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