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  1. CCST Cybersecurity Practice Test
  2. CCST Networking Practice Tests
  3. CCNA Practice Exam
  4. CCNA Network Simulator

CCST Cybersecurity Certification Cram Notes

2.0 Basic Network Security Concepts

2.3 Describe network infrastructure and technologies

Network infrastructure and technologies form the foundation of modern networks, enabling connectivity, communication, and data transfer. Here's an overview of some key network infrastructure and technologies:

1. Network Security Architecture:

  • Network security architecture refers to the design and implementation of security measures and controls within a network. It involves the deployment of various security components, such as firewalls, intrusion detection systems (IDS), intrusion prevention systems (IPS), virtual private networks (VPNs), and access control mechanisms, to protect the network and its resources.

2. DMZ (Demilitarized Zone):

  • A DMZ is a network segment that acts as a buffer zone between the internal network (trusted zone) and the external network (untrusted zone). It typically hosts servers or services that need to be accessible from the internet, such as web servers or email servers. The DMZ is designed to provide limited access and enhance security by isolating critical internal resources.

3. Virtualization:

  • Virtualization allows multiple virtual instances or virtual machines (VMs) to run on a single physical server. It enables efficient utilization of hardware resources, simplifies network management, and provides flexibility in scaling and deploying network services. Network virtualization also allows for the creation of virtual networks, enabling logical segmentation and isolation of network traffic.

4. Cloud Computing:

  • Cloud computing involves the delivery of computing services, including networks, servers, storage, and applications, over the internet. It provides on-demand access to shared resources, scalability, and cost efficiency. Network infrastructure in cloud environments relies on virtualization and distributed data centers to provide connectivity and security for cloud-based applications and services.

5. Honeypot:

  • A honeypot is a decoy system or network designed to attract potential attackers. It mimics legitimate services or resources to lure attackers and gather information about their tactics, techniques, and intentions. Honeypots serve as early warning systems, enabling security teams to detect and analyze threats before they reach critical systems.

6. Proxy Server:

  • A proxy server acts as an intermediary between clients and servers, forwarding requests and responses. It can enhance security by filtering network traffic, providing caching and content filtering, and anonymizing user identities. Proxy servers can also be used to bypass network restrictions and enhance privacy.

7. Intrusion Detection System (IDS):

  • An IDS monitors network traffic and system activities to identify and alert on potential security breaches or suspicious behavior. It analyzes network packets, logs, and event data to detect known attack signatures or abnormal activity. IDS provides real-time monitoring and alerts but does not actively block or prevent attacks.

8. Intrusion Prevention System (IPS):

  • An IPS goes beyond IDS by actively blocking and preventing network attacks. It combines the monitoring capabilities of an IDS with the ability to take automated action, such as blocking malicious traffic or terminating suspicious connections. IPS provides a proactive defense mechanism against network threats.

These network infrastructure and technologies are essential for building secure and efficient networks. Proper implementation, configuration, and ongoing monitoring are crucial to ensure the integrity, confidentiality, and availability of network resources and data.


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