CompTIA A+



Lesson 8: Troubleshooting Workstation Security Issues

Sommaire

  • Topic A: Detect, Remove, and Prevent Malware
  • Topic B: Troubleshoot Common Workstation Security Issues

Topic A: Detect, Remove, and Prevent Malware

Topic B: Troubleshoot Common Workstation Security Issues

Firewalls

A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.

Firewalls have been a first line of defense in network security for over 25 years. They establish a barrier between secured and controlled internal networks that can be trusted and untrusted outside networks, such as the Internet.

A firewall can be hardware, software, or both.

Types of Firewalls

  • Proxy firewall
  • Stateful inspection firewall
  • Unified threat management (UTM) firewall
  • Next-generation firewall (NGFW)
  • Threat-focused NGFW

Firewall Softwares

  • Windows Firewall
  • Systemd Firewalld
  • Iptables

Firewall Devices

  • Fortinet FortiGate
  • pfSense
  • Cisco ASA Firewall
  • Check Point NGFW
  • Cisco Firepower NGFW Firewall
  • Sophos XG
  • Palo Alto Networks NG Firewalls
  • Check Point CloudGuard Network Security
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