office-network-infrastructure

Office Network Setup and IT Infrastructure Management - Windows Server, Active Directory, DHCP, DNS, VLAN, Office 365 deplo

📋 Project Overview

This repository documents the complete setup and management of an office network infrastructure for 50+ users, including Windows Server deployment, Active Directory configuration, network services, and Office 365 integration.

🎯 Objectives

• Design and implement a scalable network infrastructure
• Centralize user management with Active Directory
• Automate IT operations using PowerShell scripts
• Deploy and configure Office 365 suite
• Establish security best practices and documentation

🏗️ Infrastructure Components

1. Windows Server 2019 Active Directory

• Domain Controller: Primary DC with FSMO roles
• Organizational Units: Structured OU design for users, groups, and computers
• Group Policy Objects: Centralized policy management
• User Management: 50+ user accounts with role-based access

2. Network Services

• DHCP Server: Automated IP address management
  • Scope: 192.168.1.0/24
  • Reservations for servers and printers
  • Lease time: 8 days
• DNS Server: Internal name resolution
  • Forward and reverse lookup zones
  • Conditional forwarders for external domains
• VLAN Configuration: Network segmentation
  • VLAN 10: Management
  • VLAN 20: Users
  • VLAN 30: Guests
  • VLAN 40: Servers

3. Office 365 Deployment

• Exchange Online: Email and calendar services
• Microsoft Teams: Collaboration and meetings
• SharePoint Online: Document management
• OneDrive for Business: Cloud storage
• Azure AD Connect: Hybrid identity synchronization

4. Security Implementation

• Windows Defender ATP
• Firewall rules and network security groups
• BitLocker encryption for endpoints
• Regular security updates and patch management

📁 Repository Structure

office-network-infrastructure/
├── README.md
├── docs/
│   ├── network-architecture.md
│   ├── active-directory-setup.md
│   ├── dhcp-dns-configuration.md
│   ├── vlan-implementation.md
│   └── office365-deployment.md
├── scripts/
│   ├── powershell/
│   │   ├── create-ad-users.ps1
│   │   ├── configure-dhcp.ps1
│   │   ├── backup-gpo.ps1
│   │   └── audit-ad-health.ps1
│   └── batch/
│       └── network-diagnostics.bat
├── diagrams/
│   ├── network-topology.png
│   └── ad-structure.png
└── policies/
    ├── password-policy.md
    ├── backup-policy.md
    └── disaster-recovery.md

🚀 Quick Start

Prerequisites

• Windows Server 2019 or later
• Active Directory Domain Services role
• DHCP and DNS server roles
• Office 365 tenant
• PowerShell 5.1 or later

Installation Steps

1. Install Active Directory

Install-WindowsFeature -Name AD-Domain-Services -IncludeManagementTools
Install-ADDSForest -DomainName "yourdomain.local"

2. Configure DHCP

Add-DhcpServerv4Scope -Name "Office Scope" -StartRange 192.168.1.100 -EndRange 192.168.1.200 -SubnetMask 255.255.255.0
Set-DhcpServerv4OptionValue -DnsDomain "yourdomain.local" -DnsServer 192.168.1.10

3. Create AD Users

Import-Module ActiveDirectory
New-ADUser -Name "John Doe" -SamAccountName jdoe -UserPrincipalName jdoe@yourdomain.local

📊 Monitoring & Maintenance

• Event Viewer: Daily log review
• Performance Monitor: Resource utilization tracking
• Backup: Daily system state and GPO backups
• Updates: Monthly Patch Tuesday implementation

🔧 Troubleshooting

Common issues and solutions:

• DNS Resolution: Check forwarders and root hints
• DHCP Leases: Review scope utilization
• AD Replication: Use repadmin /showrepl
• Group Policy: Use gpresult /r for troubleshooting

📈 Future Enhancements

• Implement Network Access Protection (NAP)
• Deploy Windows Admin Center
• Automate with Azure Automation
• Implement Multi-Factor Authentication
• Set up monitoring with System Center

👨‍💻 Author

Karthi G

• System Administrator
• Location: Bangalore, India
• LinkedIn: https://www.linkedin.com/in/karthi-g17/

📄 License

This project is for educational and documentation purposes.

🤝 Contributing

Feel free to fork this repository and submit pull requests for improvements. yment and automation project