Key concepts, strategies and tools for building an effective network security program. Learn about handling hackers, mitigating DDoS attacks, and much more.

Network security: The basics
Configure your network correctly, and know what's coming in and out. Network security proceeds from those two fundamental concepts.

Log management basics
Log management systems can bring you business intelligence—so choose the right type for your needs

Penetration testing: 10 tips for a successful program
Define your goals, develop attacker profiles, define deliverables, and more

The 7 deadly sins of network security
Thinking compliance equals security, failing to assess risk, and other classic blunders

What a botnet looks like
A visual, interactive tool for examining real botnet command-and-control structures

Next-generation firewalls: In depth

How to stress-test your network

The DDoS attack survival guide

Firewall audit tools: Dos and don'ts

Also find sample network security policies in CSO's tools, templates and policies library