Hello!
Our downloads sites were getting a bit cluttered with eol software. Therefore, we turned off directory browsing for some of this eol software. Hopefully this will aid users who manually browse the site to not get lost in the clutter.
That being said, all of the files are still "there" (only browsing has been turned off). So, if you know specifically what you are looking for, you can still construct a link to it (example:
http://yum.puppetlabs.com/puppet5-release-el-6.noarch.rpm). Also, any references to download links in scripts will still work.
Hopefully that helps!
Jackie