Is there an alternative for xinetd that supports control characters?

I am writing a project that allows users to connect in and run specific commands. xinetd is an option but pressing Tab via either nc or telnet will type an indentation. Is there a net daemon that can regard Tab as a control character (when using telnet or other free software client)? P.S. My xinetd config is like

service ctf
{
    server = /bin/bash
    port = 2333
    protocol = tcp
    type = UNLISTED
    user = root
    wait = no
    flags = NODELAY
}