Dial-up programs
 

I live in Indiana, U.S., what dial-up providers are compatible with Linux-debian based operating system?

As far as I know, all dial-up ISPs work with Linux. Long as the modem works, there should be a way to configure Linux to dial-up to the internet.

Don't take my word for it though, I've never bothered to get dial-up working under Linux.

Try looking at my thread KPPP compatible with Netzero. Any help would be appreciated. I know its just a matter of tweaking.

I'm using the old "SBC Yahoo" (now may be AT&T). I had very few problems with it.