Computer Science · Theme A: Concepts of computer science

A2.4 — Network security

Computer Science · SL / HL · syllabus-mapped notes

1. CS_A2.4.1

   The effectiveness of firewalls

   Filtering by whitelist, blacklist and rules, plus strengths, limits and NAT.

2. CS_A2.4.2

   Common network vulnerabilities

   DDoS, MitM, phishing, SQL injection, XSS, malware and other weaknesses.

3. CS_A2.4.3

   Common network countermeasures

   IDS/IPS, MFA, encryption, filtering, testing and training, and more.

4. CS_A2.4.4

   Encryption and digital certificates

   Symmetric vs asymmetric crypto, certificates, key pairs and key management.