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Dial In server

Discussion in 'Linux and Unix' started by stufine, Sep 11, 2003.

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  1. stufine

    stufine Thread Starter

    Jul 27, 2001
    I am trying to set up a Redhat 8.0 Server to dial in to. I want to be able to start a telnet session when I dial in.

    The modem will answer but it will never give me a login.
    I have read man mgetty and tried to do things it says to set it up but I get no results.

    I have a log file called mgetty.log.unknown which says
    09/11 09:22:20 no line given: Success
    09/11 09:22:20 Usage: mgetty [-x debug] [-s speed] [-r] line: Success

    This only happens when I type in mgetty at the #.

    When I dial in I don't see anything in the log files.

    My question is how do I setup a modem to answer incoming calls and give the caller a login so they can logon and use the server. Basically a telnet connection.
  2. codejockey


    Feb 11, 2002
    I'm not sure you'll be able to do what you intend (but I may not have understood correctly, so please bear with me ...). Disclaimer: Some or all of this may not apply to your RedHat system; since I don't run RedHat, I can hardly claim to be an expert. However, I've set up more dialin systems on various flavors of Unix/Xenix/Linux than I care to remember, so at least some of the info may be useful ... As always, discard at will ...

    In general, you will not be able to spawn a telnet session from an incoming serial (modem) connection. Telnet is a network protocol, typcially associated with port 23. However, you certainly can spawn a normal login session (i.e., shell) via a dialup connection. If this is what you intend, you will need to establish a getty on the dialup line (typically done by modifying /etc/inittab) and configuring your modem to answer incoming calls. You will also need to configure basic line characteristics in /etc/gettydefs (although the existing entries may be fine for your purposes). If you have done these things and you still don't get a login prompt, try hitting the return key several times when you connect and see if that wakes up the login.

    Hope this helps -- additional info appreciated.
  3. stufine

    stufine Thread Starter

    Jul 27, 2001
    Yes you are correct. I just want a normal login session. I will give your ideas a try and let you know.
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