The HikVision SADP tool uses layer 2 protocols to discover and identify their camera in a subnet. Because its layer 2 it won't outside of the directly connected LAN.
We were asked his a lot by CCTV companies so we developed a solution, which we call "Remote Pathway". Basically you purchase a firewall and service from us, the firewall is installed on the site with the cameras. This allows you to then run a layer 2 VPN on your laptop or PC from pretty much anywhere in the world to connect to the remote site. Once connected your SADP is able to discover and identify and interact with the cameras on the remote site. In simple terms your PC/laptop is now connected as if its on the same LAN as the cameras.
Very handy for companies where they have one or 2 sites extremely far away and want to just ship a replacement camera to a local CCTV installer, all that installer has to do is cable it up, no need to be giving out passwords etc.
I've seen one company do exactly this from a PC in Ireland to a site in Seattle.
So if you really need to get remote access it is possible just contact
www.netcelero.com for details.
