This article is from the Apple II GNO FAQ, by Devin Reade with numerous contributions by others.
A#8.10: This question is not about using your IIgs to dial out to another machine. It means that you're allowing other machines to dial in to your IIgs running GNO. The first thing you should consider is whether you really want to do this. GNO doesn't have any user/group file permissions, so as soon as someone is logged into your IIgs, they will have read/write access to all of your files. Because of this, the only layer of protection you have is dialup/getty and the security of the password file (including how well all passwords are chosen). There has been no known investigation into the security of the GNO dialup/getty. That said, the way to enable dialup access is through the dialup(8) program. It is invoked as dialup tty [speed [init_string]] Normally this would be done at GNO "boot" time through the initd(8) facility. Add the following to your /etc/inittab file: # This enables the modem for remote dialup (_into_ the IIgs) # when in multiuser mode (run level 2 or 3). t2:23:rest::/usr/sbin/dialup .ttya 38400 ate1qs0=1s11=50\\r Ensure you substitute the "38400" with a speed appropriate to your hardware. Note that "14400" is not considered to be a valid speed. If you are using a 14400 kb/s modem, you should use "19200" as the speed setting. See also Q#8.8 regarding initialization of the serial port. You should also replace the initialization string with one suitable for your modem (consult your modem manual). The one shown above contains the following HAYES commands: at (start command) e1 local echo on s0=1 auto answer on s11=50 set touch tone duration to 50ms \\r escaped carriage return (ends command)
 
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