Handling large files?

[Factory Ten]

I'm wondering how everyone deals with hosting large files. I'd like to be able to share some files that are upwards of 30 megs and I'd rather not rely on something like RapidShare to do so. Furthermore, I want the files only to be accessed by people actually clicking on a link on my forums to get them; no direct downloads to help protect against leechers.

I thought about just increasing the size of attachments but I thought I'd ask and see how everyone else here was doing it, first.

Cheers!