Security Hardening (tightening) / System Auditing

CIS Benchmark is a machine wise checklist to check, harden and standardize security of a machine.

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https://www.cisecurity.org/cis-benchmarks

Linux Fundamentals Problems

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Can’t solve? you need to make your Linux knowledge stronger.

Tools

https://web-check.xyz/ was introduced. Sir also told us to research on the terms on the result.

Also check the external tools like dnsdumpstar listed there.

Reverse Image Search: https://tineye.com/

ONSIT

You can utilize so many tools for ONSIT.

https://start.me/p/rx6Qj8/nixintel-s-osint-resource-list

There are many ONSIT methodologies: https://github.com/ahmad0x1/ARWAD/blob/main/ARWAD_Methodology.jpg

Another one is Jasson Haddix’s methodology: https://github.com/jhaddix/tbhm

ONSIT guide: