Remote Monitoring Guide

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PICTURE 1-23
PICTURE 1-24
1.7 RESOLVING CONNECTION ISSUES
There are several hardware-related situations which can prevent the NVR’s port from being
properly forwarded. The presence of multiple routers or the routers not featuring UPnP or
DMZ are the two most common issues.
DETERMINE THE NUMBER OF ROUTERS ON THE NETWORK
If there is more than one router between the NVR and the Internet it will block communication
to and from your system. To find out the number of routers on your network, you will need to
download a FREE router detection program.
STEP 1. Go to http://www.pcwintech.
com/shanes-toolbox
STEP 2. Click on Detect Multiple
Routers to begin the download.
STEP 3. Unzip the application to install it.
STEP 4. Click on the detect_routers
application to run it.
STEP 5. Click on CHECK NOW to
detect how many Routers are in the
network.
PICTURE 1-25
PICTURE 1-26
STEP 6. If there is only one router detected, and you are using UPnP, then you will need
to turn off that setting and attempt to connect using DMZ as described in Section
1.2 Opening Ports.
If you are using DMZ, check to make sure that the UPnP option is turned off.
If Multiple Routers are Detected
If there are multiple routers, you will see a
display similar to Picture 1-26.
If so, it may be preferable to connect your
DVR and computer to the router that
connects directly to the Internet. However,
this is not always possible depending upon
your particular situation.
In this case, you will need to proceed with the next section and set up DMZ in the second
router to allow communications to pass through it from the first. If only one router is detected
you will need to consult your router’s manual.