Absolutely! There are many resources available that can help you learn about current network hardening methods. Here are some recommendations:

Stack Overflow - Stack Overflow is a popular online community for programmers to ask and answer technical questions related to software development, including topics related to network hardening. While Stack Overflow primarily focuses on programming and software development, many questions and answers are related to network hardening, network security, and other related topics.

Cisco Networking Academy - Cisco offers a range of courses on network security and hardening through its Networking Academy program.

YouTube - YouTube can be a good source of educational videos in many fields. One of which can be network hardening.

Also, it's good to mention that you should research this topic and find what suits your needs.
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