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CD implementing-network-intrusion-prevention-with-suricata

Deploys and configures Suricata as an inline network intrusion prevention system, covering IPS mode setup (NFQueue), custom rule writing, Emerging Threats ruleset management, performance tuning, and logging integration. Use when deploying real-time inline traffic inspection to actively block malicious traffic, or when tuning Suricata rules and performance for production IDS/IPS deployment.

mukul975/Anthropic-Cybersecurity-Skills Agent Skills author: mukul975 Apache-2.0 4 files · 1 script body ≈ 2 796 tokens Open the sourcegithub.com↗ analyzed 5 d ago

Deploys and configures Suricata as an inline network intrusion prevention system, covering IPS mode setup (NFQueue), custom rule writing, Emerging Threats…

As a process D 49/100 · Unfinished process — weak spots: result and completion, when it triggers, failures and branches

ProcedureSecurityPeople and hiringtype and topics are labelled automatically from the skill text
Runs in: Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) OpenClaw Goose OpenCode
JSON
Technical rating
C
87/100
safety, quality, tests
Safety 60%
95
Quality 40%
75
Run on models
none yet
Process rating
D
49/100
Unfinished process
Result and completion w 14
0
Failures and branches w 10
0
Progress reporting w 2
0
the three weakest of ten parameters · all ten

How to improve

    For the model run — optional
    • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
    • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

    Guard findings · 5

    ✓ No critical or high findings

    Medium and low: 5
    • low Risky intent intent-offensive-security SKILL.md:283
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (detector / deny-list definition)
      # Detect potential reverse shell over TCP
      detector
    • low Risky intent intent-offensive-security SKILL.md:284
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (detector / deny-list definition)
      drop tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"LOCAL Potential Reverse Shell - /bin/bash in payload"; flow:to_server,established; content:"/bin/bash"; content:"-i"; within:20; classtype:trojan-acti
      detector
    • low Risky intent intent-offensive-security SKILL.md:298
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (detector / deny-list definition)
      # Detect SMB lateral movement attempts
      detector
    • low Risky intent intent-offensive-security SKILL.md:299
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (detector / deny-list definition)
      alert tcp $HOME_NET any -> $HOME_NET 445 (msg:"LOCAL Internal SMB Connection - Possible Lateral Movement"; flow:to_server,established; content:"|ff|SMB"; offset:4; depth:4; threshold:type both,track b
      detector
    • low Dangerous commands cmd-background-process SKILL.md:321
      Starts a background / autostarted process (documentation of a security skill)
      sudo systemctl enable suricata
      security skill

    Files scanned: 4. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • note frontmatter-key unknown frontmatter key "domain"
    • note frontmatter-key unknown frontmatter key "subdomain"
    • note frontmatter-key unknown frontmatter key "nist_csf"
    • note frontmatter-key unknown frontmatter key "mitre_attack"

    Process rating: all ten parameters 49/100

    • 0Result and completion. Does not say what the result is
    • 0Failures and branches. Linear process with no failure handling
    • 0Progress reporting. Says nothing while it works
    • 20When it triggers. No condition that starts the skill
    • 30Running it twice. 9 mutating operations with no state check
    • 60Tools and files. Uses tools (bash) that frontmatter does not declare
    • 70Inputs and preconditions. Inputs and preconditions are listed
    • 85Steps. 29 steps, 1 vague phrases
    • 100Consistency. Name and required fields are in place
    • 100Execution cost. Instruction body is 2796 tokens

    Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

    Quality signals

    • +5Description has no quoted example phrases that should trigger the skill
    • +4Description does not say when NOT to use the skill (false activations)
    • +3Output format is not stated: the model decides each time
    • -41 reference files, but SKILL.md never points to them: the model will not open them
    • -31 of 1 scripts are never mentioned in SKILL.md
    • +2Single-language instructions
    • +3Description length 392: enough signal without eating the budget
    • +4Structure: 20 headings
    • +3Step-by-step instructions: 29 items
    • +4Has examples (10 code blocks)
    • +1License stated

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 75.