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ISC2 CISSP 2024 outline · Domain 4: Communication & network security

Content distribution networks and traffic flows (north-south, east-west)

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Last reviewed September 30, 2026 · Leer en español

Where traffic comes from and where it goes shapes where you place controls. This topic pairs two ideas. Content distribution networks move content closer to users, changing both performance and your attack surface. Traffic flow directions, north-south and east-west, describe how data moves into, out of and within data centers and clouds, and they explain why perimeter defenses alone are no longer enough.

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