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When I worked for an ISP, we used Intel PCs running FreeBSD as the servers. (FreeBSD is a free version of Unix for the PC, see http://www.freebsd.org) We used multi-port serial cards from Cyclades, (http://www.cyclades.com) to hook up external modems. We were a small ISP, we only had 32 phone lines, but it worked well. At my present employer, I set up a FreeBSD machine out of an obsolete 486 (we were going to throw it away) and stuck a 33.6 bps internal modem into the machine that we had lying around. (It originally came free with a PC that didn't need a modem) This allowed us to set up a free dial-up server for nothing. Using these methods, I was able to create the full services of an ISP. I can use it to access my LAN at work, or I can use it as an ISP for my computer at home. Works perfectly. If I only wanted to allow FTP, I could just throw in a firewall rule that prevented a dial-up user from doing anything else. Really, though, this isn't a huge deal. Any server-class operating system should be able to do this quite effortlessly. I'm sure NT could do it (using RAS, most likely) though I'd never recommend Windows. OS/400 can also do it. The BEST choice, IMHO, is a Unix-based system like FreeBSD or Linux -- they're simply more versatile for something like this. However, for something as simple as what you need, any of these choices should work just fine. On Fri, 1 Mar 2002 tomh@simas.com wrote: > > Several of our PC-based customers use AOL to get on the internet and > transfer files to our system (via FTP batch program). They're not happy > with AOL service, for whatever reason, and local ISP connections are an > expensive option for them. My boss would like to give them the option of > us being their ISP, and then letting them FTP the files to us. FTP only, > nothing else. > > How do I make this happen? > > Tom Hightower > Solutions, Inc > http://www.simas.com
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