Subscribe to FeedAshworth Network Technician-Security Instructor Explains Why We May Never Run Out Of IP Addresses…
Thanks to David K for permission to use this Photo.
Back in 2000, we were constantly told that the world was running out of IP addresses. This was because IPV4, the IP standard we use for IP addresses only has so many mathematical combinations, thus there is a defined limit to the number of IP addresses that can be utilized. Due to the wide spread use of IP in the world, a usage rate far beyond what the creators of IP ever visualized; the IT world was stressing out as to how to address the problem. The solution was a new standard called IPV6 which introduced more bits into the addressing scheme. In turn, millions of additional mathematical combinations were created, resulting in an equal number of additional IP addresses.
Unfortunately, IPV6 is more complicated than its predecessor, requiring a degree of training for networking professionals. We were told back then that IPV6 would be implemented by the middle of the decade and alleviate the crisis.
Well guess what? It’s 2008 and the world hasn’t run out of IP addresses which is why IPV6 is barely used in the industry today. This is because of the wide popularity of NAT, Network Address Translation, which is used by most organizations that have a WAN presence.
For those unfamiliar with NAT, Network Address Translation allows a single device, such as a router to act as an agent between the Internet (or “public network”) and a local (or “private”) network. This means that only a single, unique IP address is required to represent an entire group of computers. This isn’t to say that IPV6 will wither on the vine. As of right now, government offices are required to transition to IPV6 within the next couple of years and other organizations are planning such an implementation in the future, but IPV4 is and will continue to be alive and well for some time to come.
Brad Rudisail
Computer Network Technician-Network Security Instructor
Ashworth University
