IPv4 to IPv6: Security Policies to Consider
How a default enterprise security policy could be adapted for your organization's particular needs.
IPV6 means more than just having a large enough pool of addresses to give every grain of sand and star in the sky a pool of unique addresses to play with. It also incorporates a lot of long-needed improvements in the IP protocol.
The switch from IPv4 to IPv6 will force many organizations to rethink the way their networks are defended. As noted in this EnterpriseNetworkingPlanet article, it is only when organizations become more open to incoming traffic that they will get the full benefits of IPv6.
Why is IPv6 Better?
So what has all this got to do with IPv6 security? It certainly raises the question of whether any form of NAPT is desirable. If you get rid of it, you have the potential benefit of end-to-end connectivity between any arbitrary device on your network and any external device -- because with IPv6, remember, every device can have its own unique IP address because there are so many to go around.
And getting rid of NAPT with IPv6 doesn't really make your network less secure by making its topology visible to attackers. That's because default IPv6 subnets have some 2 ^ 64 addresses on them, so even at a rate of 10Mpps it would take more than 50,000 years for a hacker to complete a scan (and Nmap doesn't even support ping sweeps on IPv6). That's not to say that hackers won't be able to carry out reconnaissance on your network -- it just means that they'll have to use other means, like DNS records or the examination of logs or netstat data on compromised machines, to find other machines to attack.
IT Solutions Builder TOP IT RESOURCES TO MOVE YOUR BUSINESS FORWARD
Which topic are you interested in?
What is your company size?
What is your job title?
What is your job function?
Searching our resource database to find your matches...
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
The following facts and statistics capture the changing landscape of cloud computing and how service providers and customers are keeping up with... Read More »SEO Dictionary
From keyword analysis to backlinks and Google search engine algorithm updates, our search engine optimization glossary lists 85 SEO terms you need... Read More »Texting & Chat Abbreviations
From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »Java Basics, Part 2
This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »