i have a network DVR for my security cameras directly attached to my wireless router via a cat5. i read in the manual that there is a way to access the DVR via the internet explorer anywhere in the world but all the internet addresses i found is the LAN address(starting with i know if u enter http://192.168.0.(and then the correspsonding number to the device while operating inside the LAN, u can access the attached device, but how can i access it on a computer outside of my home network? do i have to enter in my router WAN address first then the LAN IP address of the attached device? how does that work? i found a primary and secondary dns address. does that have anything to do with that?

You need some kind of server on a computer within your LAN. If you look on the web site of the company providing the security camera they may have software for this purpose. You then forward whatever port the camera uses via the router to the computer running the software. As you have discovered, DNS addresses have little to do with it. DNS only comes into it if want to access the camera via a domain name. There is nothing inherent in Windows or standard networking software that will allow you to do what you want without extra server software. Stuart

well see if i enter http:// 192.168.0. ( and then a number of router gave the DVR ) i can view it in any computer in the LAN. but now do i do it if im outside of the LAN? dont i need my WAN IP address or my wireless router??? and then the LAN IP addresss of the DVR? if so how do i enter it in the internet explorer address bar?

You need to know the IP Addres your ISP has provided, if it is Static it will always be the same. If it is Dynamic it will be changed by your ISP periodically. In the router you need to port forward to the devices LAN IP address. http://portforward.com/routers.htm As response 2 stated most manufacturers of IP Cameras or similar devices, provide or recommend software.

You cannot do what you are trying to do without some extra software. When you have it you enter the WAN address only and a port number. The router then does the work of forwarding to request onto the computer hosting the camera but there has to be software there to service the request. You Cannot enter both a WAN IP address and a private IP address onto the address bar simultaneously. There may already be software there to do it. What you need to do is to forward the correct port in your router. It is routers port forwarding which makes the link between your LAN and the outside world, not multiple IP addresses. Stuart