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With IPv6 will NAT be a thing of the past?

B

BZeto

Platinum Member
Looking at the next 5-10 years when we might most likely see a transition to IPv6. Does this mean NAT will start fading out with so many available addresses? It'll still play it's security role I imagine, unless something will fill that role better, too. I honestly do not know much about IPv6 but was curious about this in particular.
 
There are PRIVATE ip address ranges in v6 as well and NAT/PAT will be used to isolate private networks from public ones.
 
NAT plays a vital role in security. Even if/when the envisioned "every appliance and lightswitch has an IP address" scenario plays out, those could easily work with NAT. The IPV6 web sites try to picture NAT as evil, but NAT has a lot going for it.
 
BZeto, NAT makes renumbering easier, that's why it was originally invented. This will be necessary with IPv6 also.

There's a group of folks who are drinking the IPv6 kool-aid, who believe that NAT is evil (which it is) and that IPv6 is the solution to NAT (which it isn't). So you will often hear IPv6 proponents talking as if the two are mutually exclusive.

Many proposals to make IPv6 actually solve real problems (e.g., 8+8 and its sucessors) in fact embrace NAT in a big way.
 
Let us not forget that the lowest priority problem that IPv6 solves is address space. OMG sky is falling of the early 90s = not a big deal today.
 
Will we ever get rid of the IPv4 range? I havent paid much attention to IPv6 but is it possible to have your outside address be IPv6 with an IPv4 inside network?
 
Originally posted by: Genx87
Will we ever get rid of the IPv4 range? I havent paid much attention to IPv6 but is it possible to have your outside address be IPv6 with an IPv4 inside network?
Click to expand...

Backward compatibility (however ugly) is built in.

v6 addresses all of the problem that v4 showed. I still think we're way away from full deployment. All of the challenges of v4 have been met so far with v4 RFCs and implementations.

It's got no traction IMHO.

 
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