ERNITEC EDNS V3000 Series, User Manual

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Ernitec EDNS V3000 series – user manual
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V 2.2.082012
Appendix C: Setup a DVR behind a Router
This appendix describes how to set up a router if the DVR connects to the
internet via a router.
To properly operate a web server, e.g. a DVR, users have to set up both the IP
and port of the DVR, which are essential for data and command transmission.
The port setting is adjustable in 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 well known as the http port. Please make sure
that port 80 is not blocked by the ISP. Otherwise, a different available port shall
be reset and the setting of the DVR shall be changed.
In case a router or sometimes a DSL modem is in place, the real IP is now
assigned to the router instead of the DVR. The DVR is located behind the wall
(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); the other is virtual
IP (LAN IP). The virtual IP would be 192.168.x.1. When the remote users want
to operate the DVR, they will have to send command to the real IP, i.e. the
router. Then the router has to map (forward) the command to the DVR. Thus, it
is required to set up the router for port mapping (forwarding) before images
from the DVR can be remotely viewed on a PC.
See the router manufacturer's websites for more instructions on port mapping.