Multi-layer dual firewall topologies

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Multi-layer dual firewall topologies

The use of a multi-layer dual firewall topology is relatively new in network security, but it is rapidly gaining in popularity.

In many respects, a dual firewall topology is similar to that of an industrial process control system's "one out of two" (1oo2) protection schemes. In 1oo2 schemes, either of two sensors identifying a failure will trigger an alert. Conversely, both must identify a condition as safe for the ...

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