Re: Network security on multiple levels (was Re: NYT covers China cyberthreat)

[Jon Lewis <jlewis () lewis org>]

On Wed, 20 Feb 2013, Jay Ashworth wrote:

> Well, Warren, I once had a discussion with someone about whether dedicated
> DS-1 to tie your SCADA network together were "secure enough" and they asked
> me:
>
> "Does it run through a DACS? Where can you program the DACS from?"

See thread: nanog impossible circuit

Even your leased lines can have packets copied off or injected into them, 
apparently so easily it can be done by accident.

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 Jon Lewis, MCP :)           |  I route
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