Date: Fri, 9 Jun 1995 14:42:22 -0500 From: rberndt@neosoft.com (Randy Berndt) To: questions@freebsd.org Subject: Help needed on mis-using TELNET Message-ID: <199506091942.OAA03615@sam.neosoft.com>
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I would like to request comments and suggestions on the following plan: I am attempting to use the net as a substitute for long-distance dedicated lines. I have terminals in one city that need to talk to a mini-computer in another city. The mini-computer has NO internet access at all. I am planning on two freebsd machines, one with the terminals hooked up to it, and one with multiple serial ports connected to the mini-computers RS-232 lines. The shell script for each user would directly start up a TELNET process, and log them off when TELNET ends. They will not be doing ANYTHING else on the system. Once a connection is made, I need ALL characters to pass through from the terminal to the mini, and back, WITHOUT INTERPRETATION. How do I get the local process on the terminal side to ignore everything? I looked at setting the tty to non-canonical, and BRKINT, so that a BREAK could shut down the telnet process and log them off. Is this correct? On the machine by the mini, it appears that: 1. adding the line #define _PATH_LOGIN 'my-prog' 2. recompiling TELNETD with another output name 3. putting this new program in /etc/services on an unused port 4. specifying the new port to TELNET on the terminal machine would let me get from a terminal to the pty created by TELNETD. Is this correct? 'my_prog' would be a program that looks for the first available serial port, and then connects serial-in to pty-out and serial-out to pty-in. Is there an existing program that might do this? or that I could use code from? Again, I need ALL characters to go thru as is. Thanks in advance for your help. I am just getting started in freebsd, it is just starting to make sense, and that scares me a little. Randy Berndt [Signature, like every damned freeway in Houston, is "Under Construction"]
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