New Security Survival Guide: How to Layer a Solid Defense

A New Look at Layers
While emerging classes of tools may fend off attacks at multiple layers of a security strategy, there are pitfalls if the tools are not properly configured, managed or integrated with existing systems.

Layer 1: Perimeter Security
Layer 2: Host Security
Layer 3: Identity and Access Management
Layer 4: Network Access Control
Layer 5: Vulnerability Management
Layer Integration: Pulling It All Together

QUESTION: What do you think is the biggest pitfall to implementing a layered defense? Write a letter to the editor at editors@ziffdavis.com

Security is a many-layered thing for most I.T. managers. Attacks may target network, server or application vulnerabilities. Blended threats combine multiple attack vectors Trojan horses, worms and viruses, for example in an attempt to outflank an organizations defenses.

In response, enterprises erect a series of barriers on the principle that an attack that beats one security measure wont get past other protections. This approach goes by several names: layered security, defense-in-depth and, on the folksy side, belt and suspenders. But the underlying premise is the same.

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