14.3. Dialin Service

Contributed by Guy Helmer <ghelmer@cs.iastate.edu>.

This document provides suggestions for configuring a FreeBSD system to handle dialup modems. This document is written based on the author's experience with FreeBSD versions 1.0, 1.1, and 1.1.5.1 (and experience with dialup modems on other UNIX-like operating systems); however, this document may not answer all of your questions or provide examples specific enough to your environment. The author cannot be responsible if you damage your system or lose data due to attempting to follow the suggestions here.

14.3.1. Prerequisites

14.3.1.1. FreeBSD Version

14.3.1.2. Terminology

14.3.1.3. External vs. Internal Modems

14.3.1.4. Modems and Cables

14.3.1.5. Serial Interface Considerations

14.3.2. Quick Overview

14.3.3. Kernel Configuration

14.3.4. Device Special Files

14.3.4.1. Making Device Special Files

14.3.5. Configuration Files

14.3.5.1. /etc/gettytab

14.3.5.2. /etc/ttys

14.3.5.3. /etc/rc.serial or /etc/rc.local

14.3.6. Modem Settings

14.3.6.1. Locked-speed Config

14.3.6.2. Matching-speed Config

14.3.6.3. Checking the Modem's Configuration

14.3.7. Troubleshooting

14.3.7.1. Checking out the FreeBSD system

14.3.7.2. Try Dialing In

14.3.8. Acknowledgments