I am trying to suppress the local echo of a password in a telnet session by sending 0xFF 0xFD 0x2D (IAC DO SUPPRESS_LOCAL_ECHO). This works fine.
My trouble is enabling the local echo after the password. I am sending 0xFF 0xFE 0x2D (IAC DONT SUPPRESS_LOCAL_ECHO). But I don't see any of my commands that I type afterwards.
I am using the MS Telnet program to connect.
The IAC is describe here.
The Suppress Local Echo is defined here
Send a backspace and then a *. This will backup the cursor and then print a * over the character they just printed. If it is a slow connection the character may be there for some amount of time. Also look for the '\n' and don't try to over write that.