CompTIA® Security+™ SY0-401 Exam Cram, Fourth Edition

ExamCRAM: The CompTIA Security+ Cram Sheet

This Cram Sheet contains the distilled, key facts about the CompTIA Security+ exam. Review this information as the last step before you enter the testing center, paying special attention to those areas where you think you need the most review.

Domain 1.0: Network Security

1. Firewalls separate external and internal networks and include the following types:

Packet-filtering firewalls (network layer, Layer 3)

Proxy-service firewalls, including circuit-level (session layer, Layer 5) and application-level ...