> From: discuss-boun...@lopsa.org [mailto:discuss-boun...@lopsa.org] On
> Behalf Of Yves Dorfsman
> 
> NAT is used to let more devices use the internet, than the number of
> public ip
> addresses that available to the organisation.
> 
> But I know a few companies that ended up with a class B network, only
> have a
> few thousand internal nodes (< 20 K), but still use NAT for "security
> reasons", to hide their internal infrastructure. I'm not really sure it
> adds
> any level of security, but have found that this idea (myth?) is
> commonly accepted.
> 
> Will people still use NAT with IPv6? Anybody worked for a medium size
> organisation with several thousand nodes and IPv6? What did you/they
> do?

I see no reason to use NAT with IPv6.  Formerly, it provided some level of
security, because it's implicitly blocking inbound traffic except as
established/related, but it would be smarter, if you want that, just to
create a rule to block inbound traffic.  

However, a lot of companies will probably continue with their "Block all
access to the Internet, and make all our internal users go through a proxy"
policies.  Which I hate.

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