raq550-netfilter-update.tar.gz contains new kernel and modules for Strongbolt 550 Installation: Download the archive to your server using: wget http://www.osoffice.co.uk/linux/updates/raq550-netfilter-update.tar.gz cp /boot/vmlinux.bz2 /boot/old-vmlinux.bz2 tar -xvzf raq550-netfilter-update.tar.gz -C / reboot