专家 · 课程数：4
Network defense for a single computer
Firewalls, egress filtering, logging and detection applied to the one machine you must protect, and how to read what it tells you.
知识单元： NDF, BNW, NSA 阅读知识单元
FireAI University 是独立的：与美国国家安全局（NSA）或 NCAE-C 项目无任何隶属关系，也未获其认可或认定。我们仅将其公开发布的知识单元作为课程指南。
- 1 Defence in depth for one computer
Why network defense is built from layers rather than one strong wall, and what “default-deny” costs you in practice.
8 分钟 - 2 Firewalls: stateful filtering and macOS’s options
How a stateful firewall decides what to let through, the difference between inbound and egress filtering, and the tools macOS gives you for each.
9 分钟 - 3 Logging and detection
What is worth logging on one Mac, and the concrete signs — beaconing, DNS anomalies, unsigned binaries — that something needs a closer look.
10 分钟 - 4 Responding: isolating a machine
What to do in the first minutes after you suspect a Mac is compromised: cutting its network access, preserving what happened, and who to call.
8 分钟
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