See http://www.debian.org/ for information about Debian GNU/Linux. This FTP site is a repository for old debian releases. For new releases please see ftp://ftp.debian.org/debian/. Releases are stored by their codenames under the dists/ directory. stretch is Debian 9 jessie is Debian 8.0 wheezy is Debian 7.0 squeeze is Debian 6.0 lenny is Debian 5.0 etch is Debian 4.0 sarge is Debian 3.1 woody is Debian 3.0 potato is Debian 2.2 slink is Debian 2.1 hamm is Debian 2.0 bo is Debian 1.3 rex is Debian 1.2 buzz is Debian 1.1 If you are using APT the relevent sources.list entries are like: deb http://archive.debian.org/debian/ $RELEASE main contrib for example: deb http://archive.debian.org/debian/ sarge main contrib