SLIP and PPP allow you to have dialup Internet access using a modem. If your business or university provides SLIP or PPP access, you can dial in to the SLIP or PPP server and put your machine on the Internet over the phone line. Alternately, if your Linux machine also has Ethernet access to the Internet, you can set up your Linux box as a SLIP or PPP server. The Linux Network Administrator's Guide , from the Linux Documentation Project, is also available. See Appendix A for more information on these documents.
Several cards are support but offer shoddy performance or have other restrictions.
Linux also supports SLIP and PPP, which allows you to use a modem to access the Internet over the phone line. Performance is greatly improved with a 33.6bps or higher modem. Note that this method should work for many systems, but certainly not all. This discussion should be enough to get you on the right path to configuring the network parameters of your machine, but there are numerous caveats and fine details not mentioned here. The other Linux-related networking documents described above explain how to go about installing the Linux networking software if you do not have it already.