External network access to internal network ip proxy (internal network access to external network nat)

Extranet access to intranet ip proxy (intranet access to extranet nat)

External network access to internal network ip proxy

Hey guys and gals, today I'm going to tell you a story about accessing an intranet IP from an extranet. Imagine you are at home and suddenly you want to communicate with your company's server, but your home network is isolated from your company's intranet, what to do? This is when you need to use a proxy, just like you have an advocate outside to help you communicate with the company internally.

The way a proxy works is that you send a request to the proxy, and the proxy forwards it to an internal server for you. It's just like when you call your friend over the phone at home, and then your friend helps you convey the message to your colleagues at work. In this way, you can realize the needs of the external network to access the internal network IP.

Intranet access to extranet nat

Let's tell another story about NAT for internal network access to external network. Imagine you want to access the external network within your company, but your company uses NAT to hide the IP address of the internal network, resulting in no direct access to the external network. This is when you need to use NAT, just like when you send a letter in your company, and then the administrator of your company forwards it to an external recipient for you.

The principle of NAT is that it will translate the IP address of the internal network into an externally accessible IP address, so that the internal computer can communicate with the external network. It's as if you wrote your company's address on an envelope and then the administrator delivered it to an external recipient for you.

By doing so, we can realize the need of NAT for internal network access to external network, just like the little messenger in the company, which sends the internal request to the external network. Life is like a big movie, full of interesting metaphors and stories everywhere, let's enjoy the charm of technology together!