👥 SessionSentinel — Linux User Session Monitoring & Login Audit Tool

SessionSentinel is a Bash-based Linux user session monitoring utility that helps administrators track active user sessions, SSH connections, login history, and privileged account activity.

Developed as a practical Linux administration and security project, SessionSentinel provides real-time visibility into user access patterns and assists with routine security monitoring and system auditing.

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✨ Features

• 👤 Lists active user sessions
• 🔐 Monitors SSH login activity
• 📜 Displays recent user login history
• ⚡ Tracks recent sudo usage
• 🚨 Alerts when specified users (such as root) are logged in
• 📝 Generates timestamped monitoring logs
• 🐧 Compatible with most Linux distributions

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📂 Project Structure

SessionSentinel/
├── monitor-session.sh
├── logs/
└── README.md

Recommended: Consider renaming monitor-session.sh to session-sentinel.sh or sessionsentinel.sh so it matches the repository branding.

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🚀 Installation

Clone the repository:

git clone https://github.com/Kachinonye/SessionSentinel.git

Navigate to the project directory:

cd SessionSentinel

Make the script executable:

chmod +x monitor-session.sh

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▶️ Usage

Run the monitoring tool:

./monitor-session.sh

SessionSentinel automatically gathers user session information and highlights notable login activity for administrative review.

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📋 Monitoring Capabilities

SessionSentinel currently reports:

• Active user sessions
• Logged-in users
• SSH connections
• Recent login history
• Recent sudo activity
• Alerts for monitored privileged accounts

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💼 Skills Demonstrated

This project showcases practical experience with:

• Linux System Administration
• Bash Shell Scripting
• User Session Monitoring
• SSH Administration
• User Activity Auditing
• Security Monitoring
• Log Analysis
• Process Automation
• Technical Documentation

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🎯 Use Cases

SessionSentinel is useful for:

• Linux System Administrators
• Junior DevOps Engineers
• Security Analysts
• Home Lab Environments
• Server Login Auditing
• User Activity Monitoring
• Linux Administration Training

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🔮 Planned Enhancements

Future releases may include:

• Email alert notifications
• HTML session reports
• JSON export
• Login anomaly detection
• Multiple-user watchlists
• Slack and Discord notifications
• Failed login detection
• Configurable monitoring rules

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👨‍💻 Author

Kachinonye Nmezi

Junior Linux Administrator | Bash Scripting & Automation Specialist

GitHub: https://github.com/Kachinonye

LinkedIn: https://www.linkedin.com/in/kachinonye-nmezi-74170723b/

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📜 License

Licensed under the MIT License.