when prime needed remote access, i partnered with igor, my old friend and excellent partner who knows all there is about networking, security, efficiency.
we’ve experimented with ubuntu linux distribution as a platform for vpn solution, in conjunction with openvpn and shore wall firewall. our choice later was redundant custom built pcs, purchased from ncix, running from usb stick devil linux with same openvpn and shore wall firewall.
lack of gui interface made such setup less user friendly, but once set, there is little to no need of modifications. shorewall firewall ran non-stop for months, without need to reboot. stripped version of linux assured higher security with less need for applying patches.
openvpn solution proved to be solid network security with fast access, easy vpn key distribution and hassle-free.