Paper For Above instruction
Introduction
As small and medium-sized businesses like DesignIT expand their operations, establishing a reliable and secure local area network (LAN) becomes imperative to support daily activities, enhance productivity, and ensure security. A well-designed network combines appropriate hardware, architecture, wiring considerations, and robust security measures. This proposal outlines a comprehensive network plan tailored for DesignIT's new space, emphasizing performance, security, scalability, and cost-effectiveness.
Network Design and Architecture
The suitable network design for DesignIT is a hybrid architecture combining star topology for wired connections and a Wireless Local Area Network (WLAN) for portable device access. The star topology provides centralized management, simplifies troubleshooting, and improves performance, especially in a small office setting. It involves connecting individual devices directly to a central switch or router, which serves as the network hub.
The network architecture integrates wired connections for stationary devices such as desktops, servers, printers, and the reception area, while wireless connections support mobile devices, tablets, and laptops. This approach offers flexibility, reduces cable clutter, and facilitates future expansion without significant physical infrastructure changes.
Wiring Considerations
For LAN wiring, Cat6 Ethernet cabling is recommended due to its capability to support gigabit speeds and future upgrades, ensuring high data transfer rates for tasks such as large file sharing and multimedia editing. The cabling should run from the main switch to each workstation, server, printer, conference room, and office. UTP (Unshielded Twisted Pair) cables are sufficient for this environment, with proper cable management and labeling to facilitate maintenance.
Wireless LAN (WLAN) considerations include deploying dual-band Wi-Fi access points capable of supporting the latest Wi-Fi standards (such as Wi-Fi 6 or Wi-Fi 6E). These access points should be strategically placed to ensure full coverage throughout the office, including in reception, conference rooms, and open work areas.
Hardware Options and Costs
Key hardware components include:
Core Switch: Managed Gigabit Ethernet switch (e.g., Cisco Catalyst 2960 series) - Approx. $1,200
Wireless Access Points: Wi-Fi 6 models (e.g., Ubiquiti UniFi 6 Lite) - Approx. $100 each, with 3 units recommended for full coverage - Total $300
Firewall: Hardware firewall (e.g., Cisco ASA 5506-X) - Approx. $800
Servers: Existing servers need to be integrated into the network; additional hardware may include a network-attached storage (NAS) device for backups - Approx. $1,000
Computers: 6 computers (2 designers, 1 receptionist, others as needed) - Approx. $1,200 each, totaling $7,200
Printers: Color laser printers (e.g., HP Color LaserJet managed MFP) - Approx. $600 each, with 3 unitsTotal $1,800
Networking cables, racks, power supplies, and surge protectors - Estimated $1,000
Estimated total hardware cost: approximately $12,300, excluding labor and ongoing service costs.
Security Considerations
To safeguard sensitive data and ensure network integrity, the following security measures are
recommended:
Firewall:
Implement a dedicated hardware firewall with features like Stateful Packet Inspection (SPI), VPN support, and Intrusion Detection/Prevention Systems (IDS/IPS). Example: Cisco ASA 5506-X - Approx. $800.
Antivirus/Anti-Malware Software:
Deploy enterprise-grade solutions on all computers and servers. Options include Norton or McAfee Endpoint Security, costing approximately $50 per device annually.
Wireless Security:
Enable WPA3 encryption, disable WPS, and implement strong password policies. Consider deploying enterprise-grade WLAN with VLAN segmentation to isolate traffic between different device groups. Cost varies depending on equipment and licensing.
Physical Security:
Lock server rooms, restrict access, and deploy surveillance cameras if necessary.
Software Options and Costs
Software solutions include:
Microsoft Windows Server 2022 Standard edition for server operating system - Approx. $1,000
Microsoft Office Suite - Approx. $250 per user
Antivirus software (e.g., McAfee Endpoint Security) - $50 per device annually
Network monitoring tools (e.g., SolarWinds) - Licensing costs vary (typically starting at $2,000)
Cost Analysis
Item
Specification
Cost
Network Switch
Managed Gigabit Ethernet Switch
$1,200
Wireless Access Points
Wi-Fi 6 Compatible
$300
Firewall
Hardware with SPI & IDS/IPS
$800
Servers & Storage
Existing + NAS device
$1,000 Computers
6 desktops/laptops
$7,200 Printers
Color Laser Printers
$1,800
Networking Cables & Accessories
Cabling, racks, surge protection
$1,000
Software
Windows Server, Antivirus, Office
$5,500
Total Estimated Cost
$18,800
Mitigating Single Points of Failure
A critical aspect of network reliability involves identifying and mitigating single points of failure. Currently, reliance on a single core switch or firewall can compromise network availability if they fail. To mitigate this, redundancy can be introduced by deploying dual switches in a stack configuration or implementing failover firewalls with automatic routing adjustments. Similarly, ensuring backup power supplies like uninterruptible power supplies (UPS) can keep critical devices operational during power outages. Regular backups and disaster recovery planning further reinforce network resilience.
Conclusion
This network design proposal provides a comprehensive plan tailored to DesignIT's specific requirements. The combination of high-performance hardware, layered security measures, and a robust architecture ensures the network will support current and future needs efficiently and securely. Proper wiring, security, and redundancy strategies will facilitate seamless operations while minimizing downtime and security risks. Implementation of this plan involves careful selection of hardware, detailed planning for wiring and configuration, and ongoing maintenance and security updates.
References
Cisco Systems. (2022). Cisco ASA 5506-X Series Firewalls. Retrieved from https://www.cisco.com
Ubiquiti Networks. (2023). UniFi 6 Lite Access Point. Retrieved from https://www.ui.com
Microsoft. (2022). Windows Server 2022 Documentation. Retrieved from https://learn.microsoft.com
Rouse, M. (2023). LAN Topology. TechTarget. Retrieved from https://searchnetworking.techtarget.com
Kim, D. (2021). Network Security Essentials. Journal of Cybersecurity Education, 7(2), 45-67.
FitzGerald, J., & Dennis, A. (2020). Business Data Communications and Networking. John Wiley & Sons. SolarWinds. (2023). Network Monitoring Solutions. Retrieved from https://solarwinds.com McAfee. (2023). Endpoint Security Solutions. Retrieved from https://www.mcafee.com
Hansen, M., & Olsen, T. (2019). Secure WLAN Deployment Strategies. IEEE Communications Magazine,
57(8), 24-30.
Ofcom. (2022). Guide to Network Redundancy. Retrieved from https://www.ofcom.org.uk
