Designing a ZPF requires several steps. Which step involves dictating the number of devices between most-secure and least-secure zones and determining redundant devices?
- determine the zones
- design the physical infrastructure
- establish policies between zones
- identify subsets within zones and merge traffic requirements
Explanation: Designing ZPFs involves several steps:
Step 1 . Determine the zones - The administrator focuses on the separation of the network into zones. Zones establish the security borders of a network.
Step 2 . Establish policies between zones - For each pair of "source-destination" zones, define the sessions that clients in the source zones can request from servers in destination zones.
Step 3 . Design the physical infrastructure - After the zones have been identified, and the traffic requirements between them documented, the administrator must design the physical infrastructure. This includes dictating the number of devices between most-secure and least-secure zones and determining redundant devices.
Step 4 . Identify subsets within zones and merge traffic requirements - For each firewall device in the design, the administrator must identify zone subsets that are connected to its interfaces and merge the traffic requirements for those zones.
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