You're unlikely to find this device directly. I've never once seen anything like it.
DVI has a max bandwidth of 1.65Gbps. So it's going to exceed any standard Ethernet link, and almost certainly any sort of WAN traversal.
That means you need to do a lossy compression of the source signal in order to transmit it to the remote end. Keep in mind that for many kinds of remote viewing things (Webex, VNC, RDP, etc.) this lossy compression works out OK, but it's very video-detail unfriendly (for hopefully obvious reasons).
Or, to put it another way, you're going to need a sort-of computer on either end. Might as well look at it from that perspective.
I think there are some things you could do with Teamviewer-ish solutions that would give you almost the "hands-off" scenario on the remote side that you are looking for.
How about this
1.DVI to HDMI
2.HDMI to HDMI Over Gigabit IP Network Range Extender
then you have HDMI output to Monitor ( or DVI )
IPVMU Certified | 05/29/15 06:32pm
Take a look at these guys, they are quite popular with the home automation crowd.
If you like standards, there's HDBase-T.
IPVMU Certified | 05/29/15 06:45pm
Also, if you don't need 100% lossless compression, and why would you really since your are your source is already compressed, or if bandwidth is a concern, you could use two of these H.264 and ONVIF compliant encoder/decoders from Antrica.
I believe the Antrica units will work over our corporate LAN. They go over a scenerio much like the one I described in this summary:
What VMS are you using? I know Exacq Enterprise has the ability to push a view to another viewer. We have done multiple installations like this where we have security guards push video to certain managers, makes this very easy as you just have a PC without a keyboard or mouse, when they push video it just shows up. I wouldn't screw around with extenders or try to mess around with team viewerish solutions. Also I think Onssi and possibly Milestone has the video wall feature as well where you set it up as a video wall and remote clients can push video views to it. I would walk away from encoders/decoders, and i would avoid using any sort of IP extenders, your going to make this a service nightmare.
IPVMU Certified | 05/29/15 07:54pm
Also, to be considered is the all-in-one IP PVM* ONVIF public view monitor.
Window HDMI Stick use as Client