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5.1.1. Logical Security Controls
| Control | Function |
|---|---|
| Firewall | Filters traffic based on rules (IP, port, protocol, content) |
| ACL | Permit/deny lists based on criteria |
| IDS/IPS | Detect (IDS) or prevent (IPS) intrusions |
| Content filtering | Block based on content category/type |
| URL filtering | Block access to specific websites/categories |
| DLP | Data Loss Prevention—prevent sensitive data exfiltration |
Stateful vs. Stateless Inspection:
- Stateless: Examines each packet independently
- Stateful: Tracks connection state; return traffic automatically allowed for established connections
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Written byAlvin Varughese
Founder•18 professional certifications