A 2.4 Network security
This section covers firewalls, vulnerabilities, countermeasures, and encryption. Firewalls protect networks by inspecting traffic. Common vulnerabilities include DDoS, malware, and SQL injection. Countermeasures involve complex passwords, email filtering, and VPNs. Encryption and digital certificates ensure secure connections 2.4.1 Discuss the effectiveness of firewalls at protecting a network.Firewalls protect...