misunderstanding scale

Alexander Lopez alex.lopez at opsys.com
Mon Mar 24 16:36:55 UTC 2014

not to mention the cost in readdressing your entire network when you change an upstream provider.

Nat was a fix to a problem of lack of addresses,  however, the use of private address space 10/8, 192.168/16 has allowed many to enjoy a simple network addressing scheme.

I have and will continue to deploy IPV6,  however the ease and simplicity of IPv4 cannot and should not be overlooked.

Ipv6 requires a complete reeducation of they way we look at routing and the  core of the network.

I will not be trolling here, I prefer to troll off the Florida straits for large fish instead. ..

-------- Original message --------
From: William Herrin
Date:03/24/2014 12:27 PM (GMT-05:00)
To: "Naslund, Steve"
Cc: NANOG list
Subject: Re: misunderstanding scale

On Sun, Mar 23, 2014 at 11:07 PM, Naslund, Steve <SNaslund at medline.com> wrote:
> I am not sure I agree with the basic premise here.   NAT or Private addressing does not equal security.

Hi Steve,

It is your privilege to believe this and to practice it in the
networks you operate.

Many of the folks you would have deploy IPv6 do not agree. They take
comfort in the mathematical impossibility of addressing an internal
host from an outside packet that is not part of an ongoing session.
These folks find that address-overloaded NAT provides a valuable
additional layer of security.

Some folks WANT to segregate their networks from the Internet via a
general-protocol transparent proxy. They've had this capability with
IPv4 for 20 years. IPv6 poorly addresses their requirement.

Bill Herrin

William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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