User`s manual

Fig. 10: DVR advance system settings window.
Select “Network” on the left hand side. Once you do that, you should be able to input “Server IP”, “Gateway”,
“subnet mask” and “web port” on the right pane.
1. Server IP, is the IP address of the DVR. You can choose to use the same IP address that is given to the
DVR by the router, or just pick a new one. If you pick a new one, make sure the IP address is
recognizable by the router, or else the DVR will no longer be recognized on the network. One way to
pick an IP address is to look at existing devices on the network. Let’s say you have 2 computers on the
network. You look at their IP addresses; if they are 192.168.1.101 and 192.168.1.102, then perhaps
you can choose 192.168.1.103 (just make sure no other device on the network has the same IP
address). To be safe, you can pick an IP with a larger 4th number, such as, 192.168.1.111.
2. Gateway is the IP address of your router. So let me ask you, what IP address do you use to access the
router? The default for LINKSYS WRT54GL is 192.168.1.1. If you are not sure, check with the user’s
manual of the router to find this information.
3. Subnet mask, usually is 255.255.255.0
4. Web port (1~9999), pick one that is not used by any other devices. I generally like to pick a larger #,
there will be a lesser chance of a conflict.
After you have entered the information, choose “static IP” at the bottom. Then click on the APPLY button. Your
security DVR unit is now set with a static IP address.
3b. Determining the external IP address given to you by your ISP
You might ask: Another IP address?
OK, if you are not familiar with networking, this might be a bit confusing, so let me try to clarify things. In all the
previous sections, the DVR’s IP address we had talked about is a local IP address. What does that mean? Let me
use a completely different subject to explain this. Imagine a phone system used in an office. Each phone unit has
an extension #. So perhaps John’s extension is 101, Mary’s is 204, Richard’s is 250, and so on. Within the office,
John can call Mary simply by dialing 204. Personnel don’t need anything else other than an extension # in order
to call each other within the office. A Local IP address is somewhat similar to an extension #. The local IP address
specifies the location of a device within a local area network. When you are within the same network, you can
communicate with a device by specifying its local IP address. Going back to the phone example, if John is taking
a day off thus relaxing at home, he can’t call Mary at the office simply by dialing the 204 extension on his home