On the firewalled/vpnd server; 1. find the package URL apt-get –print-uris install dos2unix 2. wget over ssh from an internet bound server on the same network ssh use@somehost ‘wget -O – http://mirrordirector.raspbian.org/raspbian/pool/main/d/dos2unix/dos2unix_6.0-1_armhf.deb’ >> dos2unix_6.0-1_armhf.deb 3. dpkg -i dos2unix_6.0-1_armhf.deb