RE: Different terms for the same or more secure?

["David Gillett" <gillettdavid () fhda edu>]

> -----Original Message-----
> From: Hylton Conacher(ZR1HPC) [mailto:hylton () conacher co za] 
> Sent: Thursday, August 24, 2006 8:49 AM
> To: Security basics
> Subject: Re: Different terms for the same or more secure?
>
> OK so a physical subnetted network is 'safer'/'more secure' 
> than a VLAN network.
>
> I'm still not getting the difference between a virtual and a 
> physical LAN. Can anyone give me an example of say a company 
> with two branches in different locations with each branch 
> have its own sales and accounts department. I would subnet my IP such:
> Office A 192.168.0.x
> Office B 192.168.1.x
> The departments of each office would have IP's from their 
> respective subnet.
> Sales A 192.168.0.1
> Sales B 192.168.1.1
> Accounts A 192.168.0.2
> Accounts B 192.168.1.2
>
> Make sense?
> tnx for the help

  Different locations?  Then you want two physical LANs, each with
their own address block, and you might use a third (tiny) block
to manage the WAN link between locations.

  Where you would use VLANs is to separate different departments
(or organizational units or security contexts) *in the same
physical vicinity*.  Instead of mounting two adjacent devices
(physical), you install a single device and ("logically") partition 
it (virtual).

David Gillett



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