Is this really the year 2019? Yes. For nostalgic purposes, I wanted to try dial-up internet on legacy operating systems like Windows 2000. Of course, in 2019, most people no longer use telephone line modems, and many might not even know they ever existed. Modern computers no longer have telephone line interfaces, and ISPs no longer provide dial-up services. This article by Doge Microsystems describes a method for self-hosting a dial-up ISP. The author purchased a hardware telephone modem, used Asterisk to build a SIP-based VoIP network, and then connected the modem to the network using an Analog Telephone Adapter (ATA). The author also used mgetty on Linux to operate the modem and combined it with pppd to provide a PPP dial-up service. The main issues with this approach are:...