All-round Solutions for the Transition to IPv6įor large-scale Internet application scenarios, such as operator IP metropolitan area network and mobile network, with large-scale users, high-density concurrent access and high sensitivity to the quality of bandwidth, higher performance of NAT equipment will be required.įS NSG series firewalls support multi-core hardware platforms. Port Multiplexing Boosting NAT Capacityĥ. Intelligent Link Selection and Load BalancingĤ. Precise Application Recognition and Access Controlģ. When the data packet from outside network is sent back, the NAT firewall will block out unwanted or malicious data to prevent hackers from sneaking into your local network through unauthorized connections.ġ. When a data packet traverses outside the Internal network, NAT firewalls will convert that private IP address into a public IP address. NAT firewalls are used to ensure local network security and protect the data on your local devices.
There are countless data packets sent back and forth each time you make a request on the Internet. Generally, if you google "what's my IP", you will find the exact public IP address that your local hosts use. All the devices in the local network have different private IP addresses, while the public IP address they are using can be the same one. NAT works on a router or firewall to protect private networks. NAT (Network Address Translation) is the process of changing one or more local private IP addresses into a global public IP address, through which multiple local devices and hosts can be allowed to access the Internet. What Is NAT (Network Address Translation)? In this post, we're about to explore what NAT is and what NAT firewalls can do to maintain network security. But with the growth of the Internet, over 4 billion network addresses provided by IPv4 have run out and there are no more sufficient addresses for such a huge quantity of Internet users, which is why NAT came out as a solution and received much attention from worldwide Internet service providers. Many years ago when IP addressing first came out, lots of people thought that IPv4 would provide more than enough IP addresses to cover every device connected to the Internet. NAT is originally thought of as a solution to combat the depletion of IPv4 announced by ICANN in 2011.