10.4. Dialup access

Contributed by Guy Helmer <ghelmer@alpha.dsu.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.

10.4.1. Prerequisites

10.4.1.1. FreeBSD Version

10.4.1.2. Terminology

10.4.1.3. External vs. Internal Modems

10.4.1.4. Modems and Cables

10.4.1.5. Serial Interface Considerations

10.4.2. Quick Overview

10.4.3. Kernel Configuration

10.4.4. Device Special Files

10.4.4.1. Making Device Special Files

10.4.5. Configuration Files

10.4.5.1. /etc/gettytab

10.4.5.2. /etc/ttys

10.4.5.3. /etc/rc.serial or /etc/rc.local

10.4.6. Modem Settings

10.4.6.1. Locked-speed Config

10.4.6.2. Matching-speed Config

10.4.6.3. Checking the Modem's Configuration

10.4.7. Troubleshooting

10.4.7.1. Checking out the FreeBSD system

10.4.7.2. Try Dialing In

10.4.8. Acknowledgements