| 2.5.1 Explain the methods of network access security. | ||||
| 2.5.2 Explain methods of user authentication. | ||||
| 2.5.3 Explain common threats, vulnerabilities, and mitigation techniques. | ||||
| 2.5.4 Install and configure a basic firewall. | ||||
| 2.5.5 Categorize different types of network security appliances and methods. |