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    Question

    Which of the following is NOT a type of

    firewall? 
    A Packet Filtering Firewall Correct Answer Incorrect Answer
    B Stateful Inspection Firewall Correct Answer Incorrect Answer
    C Application Layer Firewall Correct Answer Incorrect Answer
    D Network Segmentation Firewall Correct Answer Incorrect Answer
    E Proxy Firewall Correct Answer Incorrect Answer

    Solution

    A Network Segmentation Firewall is not a recognized type of firewall in the context of traditional network security. Firewalls generally fall into categories based on their functionality and method of operation. Packet Filtering Firewalls examine packets individually, allowing or blocking them based on pre-defined rules. Stateful Inspection Firewalls track active connections and make decisions based on the state of the traffic flow. Application Layer Firewalls operate at the application layer of the OSI model, providing more granular control over specific applications and protocols. Proxy Firewalls act as intermediaries between users and the internet, masking user IP addresses and offering additional security measures. While network segmentation is an essential security practice that involves dividing a network into smaller, manageable segments to enhance security and performance, it does not constitute a type of firewall in itself. Instead, it can be achieved using various security devices, including firewalls, routers, and switches, which implement policies to control traffic between different segments. Option A (Packet Filtering Firewall) - This is a recognized type of firewall that filters traffic based on predefined rules for IP addresses, ports, and protocols. Option B (Stateful Inspection Firewall) - This type of firewall tracks the state of active connections and makes decisions based on context, making it a widely used firewall method. Option C (Application Layer Firewall) - This firewall type inspects traffic at the application layer, providing detailed control over applications and services. Option E (Proxy Firewall) - Proxy firewalls provide a layer of security by acting as intermediaries between clients and servers, concealing client IP addresses and controlling application traffic.

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