There are a few basic things you will need in order to get started.
1- Live Internet Connection. This can come from any internet service provider in your area. The faster the speeds they are able to provide you with, the better. However, it’s still possible to view your system remotely with a slower connection such as DSL. Usually the internet service provider will provide you with the option to rent a modem from them unless you have your own available for setup.
4- DVR with the ability to be remotely viewed. Not all DVRs have the ability to be viewed remotely. Some DVRs are just for recording and will not have the features that allow for you to connect to them through the internet. Make sure the DVR you have is capable of doing so by contacting the manufacturer or checking the manual that came with it.
2- Connect your modem to the internet port on your router. Usually your router will have one port for the internet connection. This port is usually away from the other ports on the back of the router which are for the devices which will be connecting to the internet. Use a cat5 cable for this connection.
3- Connect your DVR to one of the data ports of your router. Most routers come with at least 4 ports for hardware that will be connecting to the internet. You will also be using a cat5 cable for this connection. For the initial setup, you will not need the long cat5 cable if you are planning on relocating the DVR to a location that’s far away from the router. You may always move the DVR after the initial setup so the cable that came with your DVR should be fine.
– See more at: http://www.securitycameraking.com/securityinfo/how-to-connect-to-your-dvr-over-the-internet/#sthash.bWKIbqMv.dpuf