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DB configuring-snort-ids-for-intrusion-detection

Installs, configures, and tunes Snort 3 to monitor network traffic for malicious activity using custom and community rulesets, preprocessors, and alert output plugins. Use when deploying network-based intrusion detection at key boundaries, writing custom Snort rules, tuning rulesets to reduce false positives, or integrating Snort alerts with a SIEM.

mukul975/Anthropic-Cybersecurity-Skills Agent Skills author: mukul975 Apache-2.0 4 files · 1 script body ≈ 3 319 tokens Open the sourcegithub.com↗ analyzed 6 d ago

Installs, configures, and tunes Snort 3 to monitor network traffic for malicious activity using custom and community rulesets, preprocessors, and alert output…

As a process B 72/100 · Nearly there — weak spots: failures and branches, running it twice

AnalyzerGitHubSecuritytype 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
D
74/100
safety, quality, tests
Safety 60%
69
Quality 40%
82
Run on models
none yet
Process rating
B
72/100
Nearly there
Failures and branches w 10
0
Running it twice w 4
30
When it triggers w 12
50
the three weakest of ten parameters · all ten

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Dangerous commands medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.

For the author

Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.

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 · 11

    ✓ No critical or high findings

    Medium and low: 11
    • medium Dangerous commands cmd-privilege SKILL.md:90
      Privilege escalation / world-writable permissions
      sudo tee /etc/systemd/system/snort-iface.service << 'EOF'
    • medium Dangerous commands cmd-privilege SKILL.md:116
      Privilege escalation / world-writable permissions
      sudo tee /usr/local/etc/snort/snort.lua << 'LUAEOF'
    • medium Dangerous commands cmd-privilege SKILL.md:212
      Privilege escalation / world-writable permissions
      sudo cp snor…les/snor…les /usr/local/etc/snort/rules/
    • medium Dangerous commands cmd-privilege SKILL.md:217
      Privilege escalation / world-writable permissions
      sudo python3 setup.py install
    • medium Dangerous commands cmd-privilege SKILL.md:220
      Privilege escalation / world-writable permissions
      sudo tee /usr/local/etc/pulledpork3/pulledpork.conf << 'EOF'
    • low Dangerous commands cmd-background-process SKILL.md:105
      Starts a background / autostarted process
      sudo systemctl enable snort-iface.service
    • low Risky intent intent-offensive-security SKILL.md:241
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (detector / deny-list definition)
      # Detect reverse shell on common ports
      detector
    • low Risky intent intent-offensive-security SKILL.md:243
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (quoted — discussed, not commanded)
      msg:"LOCAL Possible Reverse Shell on port 4444";
      quoted
    • low Risky intent intent-offensive-security SKILL.md:253
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (quoted — discussed, not commanded)
      msg:"LOCAL Mimikatz Lateral Movement via SMB";
      quoted
    • low Dangerous commands cmd-background-process SKILL.md:325
      Starts a background / autostarted process
      sudo systemctl enable --now snort.service
    • low Risky intent intent-offensive-security SKILL.md:406
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
      | Trojan Activity | 12 | 1:1000001 (Reverse shell) |

    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 72/100

    • 0Failures and branches. Linear process with no failure handling
    • 30Running it twice. 10 mutating operations with no state check
    • 50When it triggers. No condition that starts the skill
    • 60Result and completion. Output format stated, no completion criterion
    • 70Inputs and preconditions. Inputs and preconditions are listed
    • 100Tools and files. No external tools needed
    • 100Steps. 27 steps
    • 100Consistency. Name and required fields are in place
    • 100Execution cost. Instruction body is 3319 tokens
    • 100Progress reporting. Reports progress

    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
    • -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
    • +4Description says when NOT to use the skill
    • +3Description length 351: enough signal without eating the budget
    • +4Structure: 16 headings
    • +3Step-by-step instructions: 27 items
    • +3Output format is stated explicitly
    • +4Has examples (8 code blocks)
    • +1License stated

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 82.