security implications of dmz and vlan

[JT Moree]

Does anyone know enough about VLANs on a Cisco Catalyst 4506 switch to explain
the security implications of this setup:

2 VLANs
 VLAN 1 - internal servers
 VLAN 2 - DMZ

Given that the dmz is to keep the dmz servers separated from the internal
network would this be a secure setup?  Are there any holes in the VLAN
architecture that would make this a BAD idea?

One caveat.  right now we have a cisco firewall which routes between two
different switches for dmz and internal.  I realize a breach in cisco security
would be a problem in BOTH situations.

thank you for any insight you guys can provide.

-- 
JT Moree
www.pcxperience.com

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