FreeRADIUS vs RSA SecurID: What are the differences?

# Introduction
Here is a comparison between FreeRADIUS and RSA SecurID based on key differences:

1. **Authentication Method**: FreeRADIUS utilizes open-source software to provide authentication services, whereas RSA SecurID relies on proprietary token-based two-factor authentication.
2. **Cost**: FreeRADIUS is generally free to use, as its name suggests, while RSA SecurID requires purchasing licenses and tokens, making it a more costly option.
3. **Flexibility**: FreeRADIUS offers more flexibility for customization and integration with various systems and protocols, whereas RSA SecurID may be more limited in terms of customization options. 
4. **Support**: FreeRADIUS has a strong community of users providing support and regular updates, while RSA SecurID has dedicated customer support but may not have the same level of community-driven resources.
5. **Security Features**: RSA SecurID is known for its high level of security, with its token-based authentication considered very secure, while FreeRADIUS may have less stringent security measures and may require additional configurations for similar levels of security.
6. **Scalability**: FreeRADIUS is generally considered more scalable for large organizations with high user counts, while RSA SecurID may require additional hardware or licenses for scalability.

In Summary, FreeRADIUS emphasizes cost-effectiveness, flexibility, and community support, while RSA SecurID offers higher security features and scalability but at a higher cost.