Propose An Appropriate Network Infrastructure That Offers So

Propose an appropriate network infrastructure that offers sound security practices

Provide a comprehensive cybersecurity plan that includes designing a network architecture for the company's existing intranet and its expansion. Create a diagram of the network infrastructure, explaining how it supports the company’s goals. Detail access controls to ensure devices and topology effectively protect the company's infrastructure. Discuss the roles of intrusion detection systems (IDS) and intrusion prevention systems (IPS), and how they can be integrated into network operations. Ensure the diagram reflects appropriate use of IDS and IPS. Limit your response to 2-3 pages for the network topology and 1-2 pages for IDS and IPS discussions. Additionally, prepare a PowerPoint presentation summarizing the solutions, explaining why the proposed mechanisms are appropriate for implementation, suitable for management review, and include a rationale for your choices.

Paper For Above instruction

In today’s digital landscape, establishing a robust and secure network infrastructure is paramount for organizations aiming to protect sensitive data, ensure operational continuity, and facilitate growth. A strategically designed network architecture incorporates layered security practices, combining physical, technological, and administrative controls. This paper proposes a comprehensive network infrastructure tailored for an organization’s existing intranet with provisions for expansion, focusing on security, efficiency, and scalability. It also discusses the integration and roles of intrusion detection and prevention systems (IDS/IPS), instrumental in safeguarding against cyber threats.

Network Architecture Design

The proposed network architecture adopts a multilayered perimeter security approach. It includes a demilitarized zone (DMZ), internal network segmentation, secure remote access, and cloud integration, all interconnected through firewalls, VPNs, and switches with advanced security features. The core of this design is a central firewall acting as the primary barrier, accompanied by intrusion detection/prevention systems (IDS/IPS) strategically deployed to monitor traffic and identify malicious activity. The intranet contains segmented subnets for different departments, using VLANs to contain potential breaches and limit lateral movement, thereby protecting critical systems.

Diagrammatically, the infrastructure begins with an external internet gateway, connecting to a perimeter firewall. Inside the firewall, a DMZ hosts web servers and email gateways. Internal firewalls segment corporate intranet sections, with IDS/IPS nodes placed at key junctions—between the external network and DMZ, and within internal segments. Remote users access securely via VPNs that authenticate through multi-factor authentication, isolated from sensitive networks. Cloud services are integrated with dedicated secure channels, ensuring data privacy and compliance.

Access Controls and Device Security

Access control mechanisms underpin the security posture. Role-based access control (RBAC) is enforced at network and application layers, restricting user permissions based on job functions. Multi-factor authentication (MFA) adds another layer of security for remote access. Devices connecting to the network are authenticated through network access control (NAC), ensuring only authorized devices gain access. Regular patching, endpoint security solutions, and device hardening strategies reduce vulnerabilities, while network topology management ensures real-time monitoring for activity deviations.

To verify the effectiveness of topology and device security, continuous monitoring tools and audit logs are essential. Network management systems (NMS) automate vulnerability scans, detect anomalies, and provide real-time alerts. Periodic security assessments and employee training bolster overall resilience, ensuring that the infrastructure maintains integrity against evolving threats.

Role and Deployment of IDS and IPS

IDS and IPS play critical roles in proactive threat management. An IDS monitors network traffic to detect suspicious activities, generating alerts for security teams, whereas an IPS actively blocks or prevents identified threats in real time. The strategic placement of IDS/IPS sensors in the network—at entry points such as internet gateways, between network segments, or near critical servers—maximizes threat detection capabilities.

For effective use in operations, IDS/IPS devices should be configured with up-to-date threat signatures, anomaly detection parameters, and automated response policies. Integration with Security Information and Event Management (SIEM) systems consolidates alerts, enabling rapid, informed responses. In the proposed architecture, IDS/IPS will ensure continuous monitoring, real-time threat prevention, and forensic analysis, supporting compliance with security standards.

Conclusion

The proposed network infrastructure balances security, scalability, and accessibility. Deploying layered defenses—firewalls, segmentation, access controls, and IDS/IPS—addresses contemporary cybersecurity challenges. The architecture supports organizational goals by safeguarding assets against intrusion and data breaches, facilitating secure remote work, and enabling controlled expansion. Incorporating routine monitoring and updates ensures resilience against emerging threats, making this a comprehensive security strategy aligned with best practices.

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