Re: Have they stopped teaching Defense in Depth?

[William Herrin <bill () herrin us>]

On Wed, Nov 16, 2011 at 11:11 AM, Owen DeLong <owen () delong com> wrote:
> On Nov 15, 2011, at 2:01 PM, William Herrin wrote:
> > On Tue, Nov 15, 2011 at 4:50 PM, Mark Andrews <marka () isc org> wrote:
> > > If you want to use unroutable addresses then use a bastion host /
> > > proxy.
> >
> > What is a modern NAT but a bastion host proxy for which application
> > compatibility has been maximized?
>
> It is a mechanism for header mutilation which creates additional costs
> in hardware (cost of routers), software (development of NAT traversal
> code in various applications, NAT software in some cases), security
> (NAT obfuscates audit trails and increases the difficulty and cost of
> event correlation, forensics, abuser identification, and attack source
> identification and mitigation, etc.).

In other words, all of the things a proxy does but without sacrificing
as many applications.

-Bill



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William D. Herrin ................ herrin () dirtside com  bill () herrin us
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