network-defense SKILL.md skillA
network-defense from miosa-osa/osa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add miosa-osa/osa/network-defense@v1.0.200Pins v1.0.200 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- miosa-osa/osa
- Path
priv/skills/network-defense/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.200, committed Sep 14, 2026
- Size
- 2,202 bytes
- Repository stars
- 78
- License
- Apache-2.0
Review network exposure, firewall policy and IDS evidence, then validate defensive changes with permitted and denied traffic controls. Use for network defense, segmentation, Suricata rules, firewall review or packet capture triage.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Network Defense ## Workflow 1. Map required flows: source, destination, protocol, port and owner. Inventory listeners and actual firewall policy without changing it. 2. Compare exposure against the map; distinguish listening interfaces from remotely reachable services. 3. For offline IDS analysis, read the Suricata workflow and verify the binary, config and packet fixture exist. 4. Validate both suspicious and allowed traffic; record capture visibility, rule versions and loss counters. 5. Prepare minimal policy changes with an out-of-band recovery path and exact rollback. Retest the denied path and permitted health checks after changes. 6. Do not claim offline detection proves inline blocking or complete network visibility. ## Worked example and prerequisites Read [references/workflow.md](references/workflow.md) before execution. Use only registered OSA tools named in the frontmatter; command examples run through `shell_execute`. Check `command -v` for each external executable on the actual target. Optional packages, external collectors and vendor accounts are not bundled or presumed installed. ## Evidence and completion …
Read the whole file at its exact version.
How to install
mdr add miosa-osa/osa/network-defense@sha256:b84a18a6c28c936fThe line at the top of this page pins the label v1.0.200, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ai33nsziycxzowbb)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2202 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
miosa-osa/osa · 78 stars · license Apache-2.0 · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ai33nsziycxzowbb GET https://markdownregistry.com/api/v1/resolve?ref=miosa-osa/osa/network-defense GET https://markdownregistry.com/api/v1/blob/b84a18a6c28c936fccbddde50862f9ca02349d1b922ca04b5e2c324336f1d5ea
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.