![]() It’s more challenging to check if a NAT firewall is working on a VPN, but you can look at the provider’s documentation. Usually, your devices will share the same public IP address, although they have different private IP addresses. If a similar IP address appears on both devices, the NAT firewall is probably enabled. Then, run a Google search for ‘ what’s my IP‘ on each of them. Just connect two different devices to the same WiFi network, like a smartphone and a laptop. How to check whether the NAT firewall is working correctlyĭo you want to know if the NAT firewall on your router is active? The process is straightforward. This process is also popularly known as IP masquerading. NAT firewall is a great way to stay safe online as computers and servers cannot see your devices’ private IP addresses. ![]() In addition, the firewall will mark any incoming traffic without a private network as unsolicited and destroy it. In fact, it discards malicious data packets or requests, effectively preventing potential dangerous connections. So, a NAT firewall permits only the traffic that has been requested by a device on the network to pass the gateway. On the other hand, a firewall is a protective layer that blocks unsolicited communications between devices. Finally, the server replies to the request, and the router sends it to your device through the private IP address. Then, the router will change the request and send it to the site’s server using its public IP address. Essentially, when you access a web page, your device will direct a request to the router with a private IP address. How do NAT works? The process isn’t as complicated as it seems. For instance, all the devices connected to the router will use the router’s public address, but each will have a different private IP address. ![]() Most VPNs and WiFi routers offer these gateways. This enables several devices on a private network to use the same gateway to the internet.Īlthough the devices will share a similar public IP address, they will have unique private IP addresses. ![]() NAT is a method of modifying an IP address by changing the information in the IP header.
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