GVI Security AR-6040, Руководство пользователя

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GVI Security
Appendix B: Setting up a DVR behind a Router
This appendix describes how to setup a router if the DVR connects to the internet via a router. The following
information includes examples of a particular router, and while specific to it, the function of port forwarding is
a common feature among all routers.
To properly operate a web server, (e.g., a DVR) set up both the IP and port of the DVR, which are essential
for data and command transmission. The port setting is adjustable in the OSD setup menu of the DVR and
only one port is needed to do remote operation. Typically and by the default, the DVR operates on port 80,
which is the http port. Ensure that port 80 is not blocked by the ISP; otherwise, a different available port
resets and the setting of the DVR changes.
If a router or DSL modem is in place, the real IP is assigned to the router instead of the DVR. The DVR is
located behind the firewall (router) and operates on virtual IP. In most cases, virtual IP starts with 192.168.x.x.
The router has two IP: one is real IP (WAN IP) and the other is virtual IP (LAN IP). The virtual IP is
192.168.x.1. When remote users operate the DVR, they first send command to the real IP (i.e., the router).
Then the router maps (forwards) the command to the DVR. Set up the router for port mapping (forwarding)
before images from the DVR are remotely viewed on a PC.
See the specific router manufacturer's websites for more instructions on port mapping.