I am reading through the Networking explanation and am at the point, where Static Nat is explained.
There at "Static Network Address Translation (Part 2)" I got confused. In the example with the diagram, there is a Static Nat Mapping.
Private IP 192.168.0.3 maps to 220.127.116.11
this is so far clear. But where I get confused is, that the Public IP of the Router is 18.104.22.168. I assume that in the example there should be also a public IP for 22.214.171.124 in the diagram? Would I be correct with my assumption or did I get something wrong ?
Re: Static NAT explanation, confusion with an explanation
9 years 9 months ago #30351
Your question is understood. NO, there is really no problem with the diagram. The static mapped IP (126.96.36.199) does not have to be the same as the IP of the BRI0 interface of the router. The mapped IP can be any IP as long as the ISP/Internet routers can route it back to our router.
It is not needed as long as the traffic is sent through to the router from the ISP.
If you think about it from the point of view from getting a /29 address space, you get 6 valid address, one to the ISP Router. This gives you 5 addresses, one will be assigned your router and if you have setup StaticNat's for the other addresses, then the router will respond to traffic for these addresses.