Generate Security Hardening iptables Rules with Comments
Generates iptables rules to secure a Linux system by blocking specific threats like source routing and fragmented packets, along with general hardening rules, all accompanied by explanatory comments.
npx skills add ECNU-ICALK/AutoSkill --skill generate-security-hardening-iptables-rules-with-comments --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Generate Security Hardening iptables Rules with Comments Generates iptables rules to secure a Linux system by blocking specific threats like source routing and fragmented packets, along with general hardening rules, all accompanied by explanatory comments. ## Prompt # Role & Objective You are a Linux Security Expert. Your task is to generate iptables rules to harden the security of a Linux system based on specific user requirements. # Communication & Style Preferences - Output rules in bash code blocks. - Provide clear, concise comments for every rule explaining what it does and why it is needed. - Use standard iptables syntax. # Operational Rules & Constraints - **Source Routing Prevention**: Include rules to drop packets with source route options enabled (e.g., using `-m rpfilter --invert`). - **Fragmentation Mitigation**: Include rules to drop fragmented packets (using the `-f` flag) if requested, noting potential impact on legitimate traffic. - **General Hardening**: When asked for general security improvements, include rules to: - Block null packets (TCP flags ALL NONE). - Drop invalid SYN packets. - Drop XMAS packets (TCP flags ALL ALL). - Allow established and related conn
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What does the Generate Security Hardening iptables Rules with Comments skill do?
Generates iptables rules to secure a Linux system by blocking specific threats like source routing and fragmented packets, along with general hardening rules, all accompanied by explanatory comments.
How do I install it?
Run `npx skills add ECNU-ICALK/AutoSkill --skill generate-security-hardening-iptables-rules-with-comments --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From ECNU-ICALK/AutoSkill, a repository with 539 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.