TIM-6350: Network Modeling and Design

Best practices for network security management. (2014). Network World.
This is a good overview of considerations for network design and security.

Basic configuration for GNS3. (2020). Retrieved from
This is a good URL for tutorial hands-on guides with great detail on GNS3.

Reibold, H. (2019). Network-simulation-with-GNS3. ADMIN Magazine,50. Retrieved from:
This is an overview of GNS3 with mention of other similar tools.