RE: Different terms for the same or more secure?

> -----Original Message-----
> From: Hylton Conacher(ZR1HPC) [mailto:hylton@conacher.co.za] 
> Sent: Sunday, August 27, 2006 7:36 AM
> To: Security basics
> Subject: Re: Different terms for the same or more secure?
>
> so, in the example above although I might have 2 physical 
> LANs I could also have 2 VLANS, one for sales and one for accounts?

  Yes, it's quite possible that at each location, you might provide
one VLAN for sales and another for accounting, especially if you needed
to apply different policies to each.  Techniques for extending VLANs
across WAN links are pretty funky, so what you'd probably do (instead)
is add access lists to the WAN routers to freely permit traffic between 
the two sales VLANs and between the two accounting VLANs, but 
block/filter traffic trying to get from a sales VLAN to an accounting 
VLAN or vice versa.  

David Gillett



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