updated project 1
This commit is contained in:
Hugh Ratsch
@@ -21,15 +21,36 @@ linux-sysadmin-journey/
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## 🚀 Current Focus
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## 🚀 Current Focus
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- Setting up home lab environment
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- [x] Setting up home lab environment
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- Installing VirtualBox/VMware
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- [x] Installing VirtualBox/VMware
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- Creating Ubuntu Server 22.04 LTS VM
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- [x] Creating Ubuntu Server 22.04 LTS VM
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- Configuring network settings
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- [x] Configuring network settings
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- Learning basic Linux commands and system navigation
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- [x] Learning basic Linux commands and system navigation
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- File system navigation
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- [x] File system navigation
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- Text manipulation
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- [x] Text manipulation
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- Process management
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- [x] Process management
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- Documenting first project setup
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- [x] Implementing basic security measures
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- [x] User management
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- [x] SSH configuration
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- [x] Firewall setup
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### Next Focus Areas
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- [ ] System Monitoring and Maintenance
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- [ ] Setting up monitoring tools
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- [ ] Log management
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- [ ] Backup strategies
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- [ ] Maintenance scheduling
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### Upcoming
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- [ ] Service Deployment
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- [ ] Web server setup
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- [ ] Database configuration
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- [ ] Automation and Scripting
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- [ ] Shell scripting
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- [ ] Scheduled tasks
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- [ ] Advanced Networking
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- [ ] DNS configuration
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- [ ] Network services
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## 📊 Progress Tracker
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## 📊 Progress Tracker
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### Completed
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### Completed
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@@ -38,19 +59,16 @@ linux-sysadmin-journey/
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- [x] Created project documentation structure
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- [x] Created project documentation structure
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### In Progress
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### In Progress
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- [ ] Home lab setup
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- [x] Home lab setup
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- [ ] Hypervisor installation
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- [x] Hypervisor installation
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- [ ] First VM creation
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- [x] First VM creation
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- [ ] Network configuration
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- [x] Network configuration
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- [ ] Basic command line proficiency
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- [ ] Basic command line proficiency
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- [ ] File system navigation
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- [ ] File system navigation
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- [ ] User management
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- [ ] User management
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- [ ] Package management
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- [ ] Package management
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### Upcoming
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- [ ] User and permission management
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- [ ] System monitoring
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## 🛠️ Projects
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## 🛠️ Projects
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1. **Home Lab Setup** (In Progress)
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1. **Home Lab Setup** (In Progress)
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- Hypervisor: VirtualBox/VMware setup
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- Hypervisor: VirtualBox/VMware setup
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@@ -0,0 +1,77 @@
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# Project Documentation Template
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## Project Structure
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```
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project-name/
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├── README.md # Main project documentation
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├── docs/ # Detailed documentation
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│ ├── setup.md # Setup and installation steps
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│ ├── configuration.md # Configuration details
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│ └── lessons-learned.md # Learning outcomes and challenges
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├── scripts/ # Any automation scripts
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└── resources/ # Additional resources and references
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```
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## Documentation Guidelines
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### 1. Main README.md Structure
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- Project Overview
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- Environment Details
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- Setup Steps (with status indicators ✅)
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- Current Status
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- Next Steps
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- Configuration Details
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- Additional Documentation Links
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### 2. Required Documentation Files
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- Setup documentation (detailed steps)
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- Configuration details (with examples)
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- Lessons learned & challenges
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- Quick reference guides
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### 3. Best Practices
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- Use markdown formatting
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- Include command examples
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- Document both successes and failures
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- Add status indicators (✅, ⚠️, ❌)
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- Link related documents
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- Include timestamps for major changes
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### 4. Portfolio Considerations
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- Clear project objectives
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- Technical skills demonstrated
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- Problems solved
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- Best practices implemented
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- Security considerations
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- Documentation quality
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## Prompt for Future Projects
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When starting a new project, ask the assistant:
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"I'm starting a new project [project-name]. Please help me:
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1. Create the initial project structure
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2. Set up documentation templates following the portfolio standard
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3. Track progress with:
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- Setup steps and verification
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- Configuration details
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- Lessons learned
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- Best practices
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- Security considerations
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- Quick reference guides
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Please maintain:
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- Clear documentation
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- Professional formatting
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- Learning-focused approach
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- Portfolio-ready structure
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- Security best practices
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- Practical examples and commands
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- Troubleshooting guides
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Current project status:
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[Describe where you are in the project]
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Next steps needed:
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[Describe what you need help with]"
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@@ -28,68 +28,136 @@ This project documents the setup of a basic home lab environment using VirtualBo
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- [x] Basic system configuration
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- [x] Basic system configuration
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- [x] Network setup
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- [x] Network setup
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### 3. Network Configuration (In Progress)
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### 3. Network Configuration ✅
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- [ ] Configure NAT adapter for internet access
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- [x] Configure NAT adapter for internet access
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1. Verify IP address configuration:
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1. Verify IP address configuration ✅
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2. Test internet connectivity ✅
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```bash
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```bash
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ip addr show
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ping 8.8.8.8 # Success
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```
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ping google.com # Success
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2. Test internet connectivity:
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```bash
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ping 8.8.8.8
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ping google.com
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```
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```
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- [ ] Configure Host-only adapter for direct host communication
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- [x] Configure Host-only adapter for direct host communication
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1. Verify second network interface:
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1. Verify second network interface ✅
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```bash
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```bash
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ip addr show
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ip addr show enp0s8
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# Output shows:
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# inet 169.254.0.2/16 brd 169.254.255.255 scope global enp0s8
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```
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```
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2. Test host connectivity:
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2. Test host connectivity ✅
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```bash
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```bash
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# From Ubuntu VM - ping your Windows host IP
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# Successfully pinged host (169.254.167.242)
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ping <windows-host-ip>
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# Round-trip time (RTT) avg: 2.846ms
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# From Windows host - ping your Ubuntu VM IP
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ping <ubuntu-vm-ip>
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```
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```
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- [ ] Document network configuration:
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- [x] Document network configuration:
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- NAT adapter IP: _____________
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- NAT adapter IP (enp0s3): 10.0.2.15/24
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- Host-only adapter IP: _____________
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- Host-only adapter IP (enp0s8): 169.254.0.2/16
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- Default gateway: _____________
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- Default gateway: 10.0.2.2
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- DNS servers: _____________
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- Host IP: 169.254.167.242
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### 4. Basic Security Setup (Pending)
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### Current Status
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- ✅ NAT adapter: Working (Internet access)
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- ✅ Host-only adapter: Working (Host communication)
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- ✅ Network connectivity: Verified
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### Next Steps
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Now that networking is configured, we can proceed to:
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1. Basic Security Setup
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- [ ] Create non-root user with sudo privileges
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- [ ] Create non-root user with sudo privileges
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- [ ] Configure SSH access
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- [ ] Configure SSH access
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- [ ] Set up UFW firewall
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- [ ] Set up UFW firewall
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- [ ] Implement basic security hardening
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### 4. Basic Security Setup ✅
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- [x] User Management ✅
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- Created sysadmin user with sudo privileges
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- Enhanced hugh user security
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- [x] SSH Configuration ✅
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- Installed and configured OpenSSH server
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- Implemented key-based authentication
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- Disabled password authentication
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- Applied security hardening settings
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- [x] UFW Firewall Setup ✅
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- Installed and configured UFW
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- Set default policies (deny incoming, allow outgoing)
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- Allowed required services:
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- SSH (port 22)
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- HTTP (port 80)
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- HTTPS (port 443)
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- Host machine access (169.254.167.242)
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- Verified connectivity
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### 5. System Monitoring Setup (Next Phase)
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- [ ] Monitoring Tools
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- [ ] Install and configure htop
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- [ ] Set up netdata for system metrics
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- [ ] Configure log monitoring
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- [ ] Maintenance Planning
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- [ ] Create backup strategy
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- [ ] Set up automated updates
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- [ ] Implement log rotation
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- [ ] Configure system alerts
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### Current Status
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- ✅ Basic VM Setup: Complete
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- ✅ Network Configuration: Complete
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- ✅ Security Measures: Complete
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- ⏳ System Monitoring: Not Started
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### Next Steps
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1. System Monitoring Implementation
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- Research and select monitoring tools
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- Plan monitoring strategy
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- Document monitoring requirements
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2. Maintenance Procedures
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- Design backup strategy
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- Create maintenance schedule
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- Document procedures
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3. Future Enhancements
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- Service deployment
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- Automation implementation
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- Advanced networking features
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## Security Configuration Status
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- [x] User Management
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- [x] Admin user created
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- [x] Sudo privileges configured
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- [x] SSH Access
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- [x] SSH server installed
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- [x] Key-based authentication configured
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- [x] Root login disabled
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- [x] Firewall
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- [x] UFW installed
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- [x] Basic rules configured
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- [x] SSH access allowed
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## Commands and Configurations
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## Commands and Configurations
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### Network Configuration Commands
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### Network Configuration Commands
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```bash
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# View network interfaces
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ip addr show
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# View routing table
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ip route show
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# View DNS configuration
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cat /etc/resolv.conf
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# Test connectivity
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ping -c 4 8.8.8.8 # Test internet connectivity
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ping -c 4 google.com # Test DNS resolution
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# If needed, restart networking
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sudo systemctl restart systemd-networkd
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```
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```
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## Issues and Solutions
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### SSH Configuration
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Any issues encountered and their solutions will be documented here.
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```conf
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# Key SSH configuration settings (/etc/ssh/sshd_config)
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PermitRootLogin no
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PasswordAuthentication no
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AllowUsers admin
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```
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## Resources
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### UFW Rules
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- [Ubuntu Server Download Page](https://ubuntu.com/download/server)
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```bash
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- [VirtualBox Documentation](https://www.virtualbox.org/wiki/Documentation)
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# View UFW status
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sudo ufw status verbose
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# Basic allowed services
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sudo ufw status numbered
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```
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## Additional Documentation
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- [Security Setup Details](security-setup.md)
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- [Lessons Learned & Challenges](lessons-learned.md)
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@@ -0,0 +1,97 @@
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# Lessons Learned & Challenges
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## Network Configuration
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### Lessons Learned
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1. **Network Adapters**
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- NAT adapter is essential for internet access
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- Host-only adapter enables direct communication with host machine
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- Each adapter serves a specific purpose in the VM setup
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2. **IP Addressing**
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- NAT adapter typically gets 10.0.2.15/24 in VirtualBox
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- Host-only adapter uses 169.254.x.x range (link-local addressing)
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- Understanding different IP ranges helps with troubleshooting
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### Challenges Faced
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1. **Host-only Network Issues**
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- Initial "state DOWN" on enp0s8 interface
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- Required proper netplan configuration to resolve
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- Solution: Explicitly configure network interfaces in netplan
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## Security Setup
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### Lessons Learned
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1. **User Management**
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- Creating admin user first ensures backup access
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- Group membership (especially sudo) is crucial for administration
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- Verify permissions immediately after changes
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2. **SSH Configuration**
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- Always backup sshd_config before modifications
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||||||
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- Test SSH access before disabling password authentication
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||||||
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- Key order of operations:
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1. Set up SSH keys
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2. Test key-based login
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3. Only then disable password authentication
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||||||
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3. **Firewall Configuration**
|
||||||
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- Always allow SSH before enabling UFW
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||||||
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- Default deny incoming, allow outgoing is a secure baseline
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||||||
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- Document all allowed ports/services for future reference
|
||||||
|
|
||||||
|
### Challenges Faced
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||||||
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1. **SSH Key Setup**
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- Proper file permissions are critical (700 for .ssh, 600 for authorized_keys)
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- Windows line endings can cause issues with key files
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||||||
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- Solution: Use proper chmod commands and verify permissions
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||||||
|
|
||||||
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2. **UFW Configuration**
|
||||||
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- Risk of losing SSH access when enabling firewall
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||||||
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- Solution: Always add SSH rule before enabling UFW
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||||||
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- Remember to allow both IPv4 and IPv6 traffic if needed
|
||||||
|
|
||||||
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## Best Practices Discovered
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||||||
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1. **Documentation**
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||||||
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- Document commands as you execute them
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||||||
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- Keep track of configuration changes
|
||||||
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- Note IP addresses and network settings
|
||||||
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|
||||||
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2. **Testing**
|
||||||
|
- Test each change immediately
|
||||||
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- Have a backup plan (like VirtualBox GUI access)
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||||||
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- Verify services after system changes
|
||||||
|
|
||||||
|
3. **Security**
|
||||||
|
- Follow principle of least privilege
|
||||||
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- Use key-based authentication over passwords
|
||||||
|
- Keep system updated and maintain secure configurations
|
||||||
|
|
||||||
|
## Quick Reference Commands
|
||||||
|
```bash
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||||||
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# Network Verification
|
||||||
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ip addr show # Check network interfaces
|
||||||
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ping -c 4 8.8.8.8 # Test internet connectivity
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||||||
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ss -tulpn # List listening ports
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||||||
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||||||
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# SSH Security
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||||||
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ssh-keygen -t rsa -b 4096 # Generate SSH key
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ssh-copy-id user@host # Copy SSH key to server
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chmod 700 ~/.ssh # Set correct permissions
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||||||
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||||||
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# UFW Management
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||||||
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sudo ufw status numbered # List rules with numbers
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||||||
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sudo ufw delete NUMBER # Remove specific rule
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||||||
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sudo ufw reload # Apply changes without disable/enable
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||||||
|
```
|
||||||
|
|
||||||
|
## Future Considerations
|
||||||
|
1. **Monitoring**
|
||||||
|
- Consider setting up basic system monitoring
|
||||||
|
- Implement log monitoring
|
||||||
|
- Regular security audits
|
||||||
|
|
||||||
|
2. **Maintenance**
|
||||||
|
- Regular backup strategy
|
||||||
|
- Update management plan
|
||||||
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- Documentation maintenance
|
||||||
@@ -0,0 +1,107 @@
|
|||||||
|
# Security Setup Documentation
|
||||||
|
|
||||||
|
## User Management
|
||||||
|
|
||||||
|
### New Admin User Creation
|
||||||
|
```bash
|
||||||
|
# Create new admin user 'sysadmin'
|
||||||
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sudo adduser sysadmin
|
||||||
|
|
||||||
|
# Add to sudo group
|
||||||
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sudo usermod -aG sudo sysadmin
|
||||||
|
|
||||||
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# Verify sudo access
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||||||
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sudo -l -U sysadmin
|
||||||
|
```
|
||||||
|
|
||||||
|
### Existing User (hugh) Security Enhancement
|
||||||
|
```bash
|
||||||
|
# Verify current groups
|
||||||
|
groups hugh
|
||||||
|
|
||||||
|
# Ensure proper sudo access
|
||||||
|
sudo usermod -aG sudo hugh
|
||||||
|
```
|
||||||
|
|
||||||
|
## SSH Key Configuration
|
||||||
|
|
||||||
|
### Existing Windows SSH Key
|
||||||
|
1. Display public key content on Windows:
|
||||||
|
```powershell
|
||||||
|
# In PowerShell/Command Prompt
|
||||||
|
type C:\Users\YourUsername\.ssh\id_rsa.pub
|
||||||
|
```
|
||||||
|
|
||||||
|
2. Add public key to authorized_keys:
|
||||||
|
```bash
|
||||||
|
# On Ubuntu Server
|
||||||
|
mkdir -p ~/.ssh
|
||||||
|
chmod 700 ~/.ssh
|
||||||
|
nano ~/.ssh/authorized_keys
|
||||||
|
# Paste your public key here
|
||||||
|
chmod 600 ~/.ssh/authorized_keys
|
||||||
|
```
|
||||||
|
|
||||||
|
## SSH Server Hardening
|
||||||
|
```bash
|
||||||
|
# Backup original config
|
||||||
|
sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
|
||||||
|
|
||||||
|
# Edit SSH config
|
||||||
|
sudo nano /etc/ssh/sshd_config
|
||||||
|
```
|
||||||
|
|
||||||
|
Required SSH configurations:
|
||||||
|
```conf
|
||||||
|
# Security settings
|
||||||
|
PermitRootLogin no
|
||||||
|
PasswordAuthentication no
|
||||||
|
PubkeyAuthentication yes
|
||||||
|
AllowUsers hugh sysadmin
|
||||||
|
|
||||||
|
# Additional hardening
|
||||||
|
Protocol 2
|
||||||
|
X11Forwarding no
|
||||||
|
MaxAuthTries 3
|
||||||
|
```
|
||||||
|
|
||||||
|
## Applied Security Measures
|
||||||
|
- [x] Created sysadmin user
|
||||||
|
- [x] Enhanced hugh user security
|
||||||
|
- [x] Configured SSH key authentication
|
||||||
|
- [x] Applied SSH hardening settings
|
||||||
|
- [x] Tested SSH access
|
||||||
|
- [x] Configured UFW firewall
|
||||||
|
|
||||||
|
## Firewall Setup (UFW) ✅
|
||||||
|
|
||||||
|
### Current UFW Configuration
|
||||||
|
```bash
|
||||||
|
Status: active
|
||||||
|
|
||||||
|
# Allowed incoming connections:
|
||||||
|
1. SSH (22/tcp)
|
||||||
|
2. HTTP (80/tcp)
|
||||||
|
3. HTTPS (443/tcp)
|
||||||
|
4. All traffic from host (169.254.167.242)
|
||||||
|
|
||||||
|
# Default policies:
|
||||||
|
- Incoming: deny (default)
|
||||||
|
- Outgoing: allow (default)
|
||||||
|
```
|
||||||
|
|
||||||
|
### Applied Rules
|
||||||
|
```bash
|
||||||
|
sudo ufw default deny incoming
|
||||||
|
sudo ufw default allow outgoing
|
||||||
|
sudo ufw allow ssh
|
||||||
|
sudo ufw allow http
|
||||||
|
sudo ufw allow https
|
||||||
|
sudo ufw allow from 169.254.167.242
|
||||||
|
```
|
||||||
|
|
||||||
|
### Verification
|
||||||
|
```bash
|
||||||
|
# Current firewall status
|
||||||
|
sudo ufw status numbered
|
||||||
|
```
|
||||||
@@ -0,0 +1,17 @@
|
|||||||
|
Please help me maintain consistent documentation standards as established in my Linux home lab project. Key files to reference:
|
||||||
|
project-documentation-template.md - Base template for all projects
|
||||||
|
projects/01-homelab-setup/ - Example of implemented standards:
|
||||||
|
README.md - Main project documentation
|
||||||
|
security-setup.md - Component-specific details
|
||||||
|
lessons-learned.md - Learning outcomes and challenges
|
||||||
|
Documentation requirements:
|
||||||
|
Use markdown formatting
|
||||||
|
Include status indicators (✅, ⚠️, ❌)
|
||||||
|
Document commands with examples
|
||||||
|
Track both successes and challenges
|
||||||
|
Maintain separate files for:
|
||||||
|
Main project documentation
|
||||||
|
Detailed setup/configuration
|
||||||
|
Lessons learned
|
||||||
|
Quick reference guides
|
||||||
|
Please help ensure any new documentation follows these established patterns for portfolio consistency.
|
||||||
Reference in New Issue
Block a user