Over the past few months, I've been working on a project that aims to simplify one of the most repetitive and important tasks in network administration: reviewing the security configuration of Cisco router and switch interfaces.
Today, I'm excited to share my open-source project:
Cisco Interface Security Audit
The project automatically analyzes Cisco device configurations, evaluates interface security settings, identifies missing security features, and provides actionable recommendations—including the CLI commands required to improve the configuration.
Why I Built This
In many enterprise networks, interface security verification is still performed manually.
Engineers often have to inspect hundreds—or even thousands—of interfaces to answer questions like:
- Is Port Security configured?
- Is BPDU Guard enabled where appropriate?
- Are unused interfaces properly secured?
- Are access and trunk ports configured according to security best practices?
- Which interfaces require additional hardening?
Performing these checks manually is time-consuming and increases the risk of overlooking security gaps.
This project automates that process and generates a consistent security assessment.
What the Tool Does
The Cisco Interface Security Audit tool:
- Parses Cisco IOS configuration files
- Audits interface security settings
- Detects missing or weak security configurations
- Assigns security findings to each interface
- Recommends improvements
- Generates the required Cisco CLI commands for remediation
- Produces human-readable reports that simplify review and remediation
Rather than simply reporting problems, the tool focuses on helping engineers understand what should be improved and how to implement it.
Who Can Benefit?
This project can be useful for:
- Network Engineers
- Network Security Engineers
- Infrastructure Teams
- Security Auditors
- Consultants
- Students preparing for Cisco certifications such as CCNA, CCNP, and CCIE
It can also serve as a foundation for larger compliance and network automation platforms.
Open Source
I believe practical automation tools should be accessible to the networking community.
The project is open source, and I welcome feedback, suggestions, bug reports, and contributions from other engineers.
If you have ideas for additional security checks or Cisco features that should be included, I'd be happy to hear them.
GitHub Repository
https://github.com/jafartavana01/cisco-interface-security-audit
I hope this project saves network engineers valuable time while helping improve the overall security posture of Cisco infrastructures.
Feedback and contributions are always welcome.
