CVE Potential/Antiquated Info Patch#161
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On the creator's repository, I noticed the firewalls section contained only NIST guidance from 2009 and a third party documentation of the iptables service. I added 3 sources regarding firewalls and 3 regarding DoS specifically within the topic of firewalls. I also removed the 2009 NIST article but kept the iptables documentation as it is extensive and not yet antiquated.
Fixed minor typo
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CRITICAL: CVE and Security Sensitive Outdated Guidance
Hello,
I've come to inform you of an urgent matter regarding your repo awesome-security-hardening: you have very limited material regarding firewalls, a critical part of security hardening. You reference a book from 2009 and a repo that documents Iptables.
Overall, the book is outdated, the firewall and security model is mostly static and doesn't hold up to the 2026 modern standard. In addition, there is very little mention about DoS protection at a broad scale, a large part of firewalls as well.
In this pull request I aimed to provide a set of articles that convey the critical information that is currently missing. Here are the sources I added to your firewall section in my PR.
These cover DoS attacks
MS-ISAC & CISA: Understanding and Responding to Distributed Denial-of-Service Attacks
https://www.cisa.gov/sites/default/files/publications/understanding-and-responding-to-ddos-attacks_508c.pdf
MS-ISAC Guide to DDoS Attacks
https://learn.cisecurity.org/ms-isac-guide-to-ddos-attacks
NIST: BGP Security and Resilience IPD Jan 2025
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-189r1.ipd.pdf
These cover firewalls as a whole
NIST SP 800-207 / 800-207A
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-207A.pdf
CIS Critical Security Controls Version 8.1
https://etir.unb.br/wp-content/uploads/2024/10/CIS_Controls__v8.1_Guide__2024_06.pdf
NIST SP 800-53 Revision 5
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-53r5.pdf
Sidenote
In addition, you may want to include some sources that have less depth and are concise, so readers can at least 'get their feet in the water' soon (as you've done with some other sections). I didn't take this step, but you may consider adding my repo on Unmanned Server Security, specifically an excerpt regarding DDoS protection.