Debian Archive

Debian archive for sources.list

http://archive.debian.org/debian-archive/debian/dists/ 

The sources.list file may look like (need to check the deb-src entries);

deb [trusted=yes] http://archive.debian.org/debian-archive/debian/ squeeze main non-free contrib

deb-src [trusted=yes] http://archive.debian.org/debian-archive/debian/ squeeze main non-free contrib

deb [trusted=yes] http://archive.debian.org/debian-archive/debian/ wheezy main non-free contrib

deb-src [trusted=yes] http://archive.debian.org/debian-archive/debian/ wheezy main non-free contrib

deb [trusted=yes] http://archive.debian.org/debian-archive/debian/ jessie main non-free contrib

deb-src [trusted=yes] http://archive.debian.org/debian-archive/debian/ jessie main non-free contrib

deb [trusted=yes] http://deb.debian.org/debian/ buster main non-free contrib

deb-src [trusted=yes] http://deb.debian.org/debian/ buster main non-free contrib

Also:

echo "Acquire::Check-Valid-Until "false";" >> /etc/apt/apt.conf.d/99no-check-valid-until
echo "Acquire::AllowInsecureRepositories "true";" >> /etc/apt/apt.conf.d/99no-check-valid-until
echo "APT::Get::AllowUnauthenticated "true";" >> /etc/apt/apt.conf.d/99no-check-valid-until

apt-key add /root/archive-key-6.0.asc (acquired from the keys.html link below *)

See also:

https://wiki.debian.org/SourcesList

https://ftp-master.debian.org/keys.html (* get key file from here and do apt-ket add key-file)