HOW'S ROUTER WORKING? NAT
Hello guys!
I recently repeated for myself how's router workin' and decided write this post for y'all.
So i think y'all have a router in your apartment or office with wireless network, and surely many of you wondered how it's several PC's can use one IP address of ISP, bcz u can't connect phones like that?
I gonna explain hardly for some ppl things on simply language!
So, actually, it's very simple. The point is that we're usin' such simply thing as NAT - it's network address translation, which's have addresses of our local and global networks from ISP.
This works on the key-value principles and uses as parameters our internet address and port numbers.
Here we've three basic types of NAT:
1. Static - it's when we've one IP address of global network which is strictly addicted by NAT on address in our local network.
That's rarity installin' in home and mobile networks and more commonly installin' in offices with stringent security requirements.
2. Dynamic - it's when we've a pool or stack of global addresses, which is NAT givin' our computers at the time when it sending request for global address.
Dynamic NAT installin' commonly in mobile networks (internet, which u're using on your SIM card by your mobile ISP) and btw that's why gamers have problems when trying to connect in a game throught mobile internet. But here u can trynna request a static address from your ISP for money.
3. Port translation - it's when we've one global address and several local addresses. In that case NAT remember our local computers by the port and routin' packages throut router and one IP address but several ports, with one port for one computer ofc.
This type is often installin' in home routers which's connected to an ISP. All our computers, laptops and phones are recognized through the port number.
That's all. Save this tab to your bookmarks!
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