What problem does NAT solve?

NAT is a very important aspect of firewall security. It conserves the number of public addresses used within an organization, and it allows for stricter control of access to resources on both sides of the firewall.

Can two computers have the same public IP address?

As I understand it, two computers cannot have the same public (external) IP address unless they are connected via the same router. If they are connected via the same router, then they can have (share) the same public IP address yet have different private (local) IP addresses.

How do I find the public IP addresses of devices on my network?

How to Find All IP Addresses on a Network

1. Open the command prompt.
2. Enter the command “ipconfig” for Mac or “ifconfig” on Linux.
3. Next, input the command “arp -a”.
4. Optional: Input the command “ping -t”.

What kind of NAT Am I behind?

If by NAT you mean any NAT including a WIFI router for example click the windows button, type cmd, click on command prompt, type in ipconfig and press enter, see what it says to the right of “IPv4 Address”. If it starts with 192.168 OR 172.16-172.31 OR 10 – you’re on a NAT.

What is a port symmetric NAT?

A port symmetric NAT means that every time your console connects to a different destination address that your router is assigning a new external port. For multiplayer, this means that every time you connect to a new peer console there is no way of knowing what port you’ll be coming from.

What is NAT in computer network?

NAT stands for network address translation. It’s a way to map multiple local private addresses to a public one before transferring the information. Organizations that want multiple devices to employ a single IP address use NAT, as do most home routers.

How many computers can you put behind a NAT?

There are 65,536 ports, so the NAT router can allow 65,536 connections from 65,536 different computers at the same time.

How do you tell if an IP is public or private?

To check if your IP address is public, you can use myip.com (or any similar service). You will be shown the IP address that was used for accessing the site; and if it matches the IP address that your Internet service provider assigned you, then you have a public IP address.