To connect a router to your existing LAN or WAN network, you need to know the security policies and firewalls of your LAN. An added disadvantage of using LAN is that your IP address will be shared with the local network. This means you can be sharing the same router with other computers. Having a dedicated server, though, means that only one computer will be able to use your IP.
In this situation, Firewall is the perfect solution. It acts as a gateway between your LAN and internet.
First time Set up
First, know what a router does and how it connects to your router via the network. A router converts the IP addresses to a numerical network address, as well as creating a subnet based on your specific Ethernet hardware. This is a connection between your router and all other routers or computers that have ethernet adapters.
Next, figure out how many devices you will need to connect to your router. Two would be enough for a LAN environment, and more than three will connect to an internet connection. However, if you are planning to do some advanced or packet routing, you may need more devices.
Before you install any Firewalls, make sure that the ones that you select will not block some of your other networking devices. Look for products that come with features such as packet inspection and deep packet inspection. These two will let you identify possible trouble spots on your network and prevent them from ever affecting the rest of your network. These two features will also let you perform more advanced filtering.
Next, be sure that the selected firewall will not block the ports of other wireless access points. Ensure that the ports that you want to block will not be blocked by other devices on your network.
On the other hand, make sure that the forwarded port is open on the firewall. This is used for forwarding incoming packets to another device, and when that device is a router, you will need to open a port to allow those packets to pass through.
Once you are sure about these requirements, you are ready to install the product on your computer device. For best results, you should find a product that has easy to use wizard. This will enable you to install the router and all other devices without even knowing the commands needed.
Once installed, start setting up your security group. You may want to create a group that consists of all devices on your LAN, so that it would prevent unauthorized access from other routers. To get more details, search for Firewall: Security Group on the internet.
Also, you will want to consider the rest of your home network, as the routers of these routers may not be compatible with your routers. You should know the IPs of all the routers in your home, so that you will not have to change your security configurations in future. With this in mind, set up the routers that you will use with your existing LAN.
Set up your routers in order to connect to your LAN, and the rest of your home network. With this setup, you will see your new routers will not need an external router anymore.