(like Internet Addresses) That is called NAT (Network Address Translation) and since your router is doing that NAT, it allows you to see through to the next router, and everything connected to it. One of those other 254 devices needs to be a Gateway (router) so you can see other address ranges. With 192.168.1.xxx as your IP range, you are limited by that network ID to 254 other devices that your computer can talk to. The reason for this is, using as example 192.168.1.1 on the first router, if your next router also has 192.168.1.1 as an address, that is called an IP Address Conflict. So if you run a ‘tracert’ (trace route) command and see replies from our routers, if any of them show the same network ID, then we have to change one of them to a unique ID. The rule being merely, they must be different. It can be a simple as changing one number in the third octet = 192.168.2.xxx, or it can be completely different = 10.10.10.xxx. (Where xxx= 001 through 255). The next router in line MUST have a different Network ID. So if your router’s Internal Address is 192.168.1.1, everything on the router must be addressed 192.168.1.xxx. That mask means your first three octets in the IP address for everything connected to that router must match. The network ID is usually the first three octets in your IP Address, depending on the Subnet Mask. Lets assume that we have just a ‘standard’ setup on each router, where the subnet mask is 255.255.255.0. So now, we need to map our way from the Internet back to our device using Port Forwarding rules to guide our incoming signal.įirst rule of multiple routers – Every router MUST have a unique Network ID.
#PORT FORWARDING IP CAM HOW TO#
In the last article we learned how to discover Double NAT and Triple NAT by using the ‘tracert’ command. We have discovered that we are passing through three routers on our way to the Internet. Once you have those tools at your disposal, identifying and fixing issues becomes a LOT easier.
Networking is not really difficult when you know some ‘basics’, or rules that must be followed every time. It is my hope that these articles will help you gain an overview of networking that allows you to walk into any situation and be able to figure out what the problem is quickly, and know what to do to fix it. This will be the third and final installment of the NAT and Port Forwarding series.
0 kommentar(er)
