RTELNET (Reverse Telnet) Rtelnet is a modified version of the Berkeley telnetd program. Its purpose is to create a pseudo-tty device that is connected to an Annex serial port. This allows UNIX programs such as tip and uucp to access serial devices attached to Annex ports. Rtelnet works like a telnet daemon program (telnetd) except in a reverse fashion. Instead of accepting telnet connections from other network machines, rtelnet makes telnet connections to Annex ports. Rtelnet creates a new file-like device (usually in /dev) that programs can open and use like a normal /dev/tty. Rtelnet will run as-is on any 4.2/4.3 BSD system or SUN workstation. To run on other systems may require some code modification. Syntax: rtelnet [-] where, switches - can be 'm' and/or 'r' annex - is the Inet address or hostname of the Annex port - is the Annex port number device name - is the file name to be created switches: r - means remove if it exists. The default is to print an error message and exit. m - means to momentarily drop the network connection to the Annex port whenever the pseudo device is closed. This can be used to cause a dial-out modem to hangup when a program like tip exits. Example usage: You have a dial-out modem attached to port 15 of an Annex named "modem-annex". You would like users on a SUN workstation to be able to use the modem via 'tip'. 1. Configure Annex port 15 using 'NA' to "control_lines: modem_control" 2. Add an entry to /etc/rc script to create the tip pseudo-device whenever the SUN is booted. Entry would be: rtelnet -rm modem-annex 15 /dev/modem1 3. Create new system definition in /etc/remote specifying /dev/modem1 as the tip (tv) device.