How to design the security levels

Unanswered Question
Oct 3rd, 2008

The design is:


1. Perimeter ASA

2. Front end servers (DMZ)

3. FWSM on Cat 6500

4. Back end servers - includes customer & transactional database (DMZ 1)

5. Back end connectivity to another site for transactional processing & response which then updates the backend servers customer & transactional database(INSIDE)


My query is whether point 5 should be given higher security level (INSIDE) than point 4 (DMZ1) or vice versa. What factors do I need to consider to decide on the security levels.


Regards.



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