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NAT's & IPv6

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Discuss some of the problems NATs create for IPsec security. (See [Phifer 2000]). Can we solve these problems by using IPv6? Why has deployment of IPv6 been slow to date? What is needed to accelerate its deployment?

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Network Address Translation, abbreviated as NAT, was created to provide a provisional resolution when IP addresses become less in number and unavailable for use. NAT basically assists in identifying and showing their availability so that these IP addresses can be shared by hosts. This was done with IPv4 to address the IP address decline. The NAT maps the IPs and makes them available for use by private networks when and where there's no need to have access via a registered public address. That is not the only function of the NAT; they also act in the middle of a private and public network, pick and convert a public IP available address into multiple private ones. The device that translates an IP address to another one is called a NAT router.

There are some problems with using a NAT. An IP address is a unique identifier of the host; however, the NAT when it comes into play changes this definition. The NAT router breaks the end-to-end connection by making interceptions and ...

Solution Summary

This solution elaborates on NAT, IPsec security, and how using IPv6 can solve some of the relevant security problems.