Network Security
AAA
Freeradius
802.1X
Linux
Robust Network Access Control System
A comprehensive security solution designed to protect corporate networks by implementing granular access control based on user identity and roles.
About the Project: Fortifying the First Line of Defense
In any corporate environment, controlling who can access the network is the first and most critical line of defense. This project involved engineering a robust and scalable access control system from the ground up, moving beyond simple password protection to a sophisticated, identity-based security model.
Key Features
- AAA Framework: Utilizes the full Authentication, Authorization, and Accounting (AAA) framework with Freeradius on a Linux server to manage network access.
- 802.1X Port-Based Authentication: Implements the IEEE 802.1X standard to ensure that only authenticated and authorized devices can connect to network ports (both wired and wireless).
- Role-Based Access Control (RBAC): Assigns specific access rules and network segments (VLANs) to users based on their role within the organization, ensuring the principle of least privilege.
- Comprehensive Access Logging: All access attempts—successful or failed—are logged, providing a clear and auditable trail for security analysis and compliance.
Technical Implementation
The system is centered around a Freeradius server running on a hardened Linux distribution. It integrates with existing network infrastructure, including Cisco switches and routers, to enforce access policies. The configuration allows for high scalability and can be adapted to support various authentication methods and directory services like LDAP or Active Directory.