routeros-firewall SKILL.md skillA
routeros-firewall from tikoci/routeros-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tikoci/routeros-skills/routeros-firewall@git:20260626.5284858Pins git:20260626.5284858 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tikoci/routeros-skills
- Path
routeros-firewall/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260626.5284858, committed Jun 26, 2026
- First version recorded
- May 7, 2026
- Size
- 7,484 bytes
- Repository stars
- 89
- License
- MIT
RouterOS firewall filter, NAT, mangle, and address-list configuration. Use when: writing firewall rules in RouterOS, configuring NAT, setting up address-lists or interface-lists, writing idempotent firewall scripts, configuring DNS redirect or port forwarding, or when the user mentions /ip/firewall, chain=forward, chain=input, connection-state, address-list, interface-list, or layer7-protocol on MikroTik.
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
# RouterOS Firewall ## Rule Ordering — Sequential, Not Priority-Based Rules are evaluated **top-to-bottom** — first match wins. This is the biggest source of iptables confusion. - `place-before=0` inserts at the top; default `add` appends at the bottom - An `action=accept` rule must appear BEFORE any `action=drop` for the same traffic - **Non-terminal actions do NOT stop evaluation:** `action=add-src-to-address-list`, `action=add-dst-to-address-list`, `action=log`, and any rule with `passthrough=yes` continue to the next rule. A `drop` rule below an `add-src-to-address-list` will still fire. ```routeros # WRONG — drop fires before accept can match /ip/firewall/filter/add chain=input action=drop /ip/firewall/filter/add chain=input src-address=10.0.0.1 action=accept # CORRECT — accept first, drop catches the rest /ip/firewall/filter/add chain=input src-address=10.0.0.1 action=accept place-before=0 /ip/firewall/filter/add chain=input action=drop ``` ## Address-Lists as Dynamic Selectors LLMs rarely suggest this pattern — they write one rule per IP address instead. Address-lists scale to hundreds of IPs with a single firewall rule. ```routeros …
Read the whole file at its exact version.
How to install
mdr add tikoci/routeros-skills/routeros-firewall@sha256:4ada00c81fa09c6fThe line at the top of this page pins the label git:20260626.5284858, 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_tyld77pidydhr2wr)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 7, 2026 and Jun 26, 2026, about one every 25 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260626.5284858 latest | 2026-06-26 | 5284858 | 7,484 B | A | view · diff |
| git:20260507.2ea4c62 | 2026-05-07 | 2ea4c62 | 7,476 B | A | view · diff |
| git:20260507.51a982c | 2026-05-07 | 51a982c | 7,434 B | A | view |
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 (7484 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
tikoci/routeros-skills · 89 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tyld77pidydhr2wr GET https://markdownregistry.com/api/v1/resolve?ref=tikoci/routeros-skills/routeros-firewall GET https://markdownregistry.com/api/v1/blob/4ada00c81fa09c6f9a86c52f062e5107a10c8e858685b17354afd637c2b9d646
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.