agentmods.dev

unifi-port-forwarding

unifi-port-forwarding is a skill for Claude Code from mikeholownych/unifi-mcp. It costs 58 tokens per session (663 once invoked), scanned A, original, MIT.

A guide for publishing a service on a home or office network to the internet through a UniFi router. It also covers hairpin NAT, where the service works from outside but not from inside the same network.

In plain words
What is it for?
Use it for NAS, camera recorder, Home Assistant, or game-server access. It covers port-forward entries, firewall rules, and checks that the service is listening.
Why use it?
It helps identify cases where port forwarding cannot work, such as carrier-grade NAT, and highlights risks from exposing services like SSH or remote desktop.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

not rated 0repo 12d ago A scan 58 tokens original MIT

Good fit Use it for NAS, camera recorder, Home Assistant, or game-server access. It covers port-forward entries, firewall rules, and checks that the service is listening.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mikeholownych/unifi-mcp/unifi-port-forwarding
View source ↗ mikeholownych/unifi-mcp
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add mikeholownych/unifi-mcp --skill unifi-port-forwarding
Clone the repo
git clone --depth 1 https://github.com/mikeholownych/unifi-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for unifi-port-forwarding

README.md
[![agentmods](https://agentmods.dev/badge/skills/mikeholownych/unifi-mcp/unifi-port-forwarding/github.svg)](https://agentmods.dev/skills/mikeholownych/unifi-mcp/unifi-port-forwarding)
Your own site
<a href="https://agentmods.dev/skills/mikeholownych/unifi-mcp/unifi-port-forwarding"><img src="https://agentmods.dev/badge/skills/mikeholownych/unifi-mcp/unifi-port-forwarding/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for unifi-port-forwarding

Your own site · 80×15
<a href="https://agentmods.dev/skills/mikeholownych/unifi-mcp/unifi-port-forwarding"><img src="https://agentmods.dev/badge/skills/mikeholownych/unifi-mcp/unifi-port-forwarding.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 663 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.00663
Opus 5 $0.00029 $0.00331
Sonnet 5 $0.00012 $0.00133
Haiku 4.5 $0.00006 $0.00066

Measured 12d ago against content hash 2c8809005a29, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

unifi-port-forwarding scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/unifi-port-forwarding/SKILL.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UniFi Port Forwarding & Hairpin NAT

Expose a LAN service to the internet safely — including the infamous case where it works from outside but fails inside your own walls.

Step 0 — Reality checks BEFORE any forwarding

  1. Version: get_sysinfo.
  2. Is the WAN even forwardable? get_site_health → WAN IP:
    • Public IP (not 100.64.x.x, not RFC1918) → good.
    • CGNAT/carrier-grade range → forwarding CANNOT work; stop and offer alternatives (VPN + reverse connection, tunnel like Tailscale/cloudflared).
  3. What service/port? Map well-known risks: RDP/SSH/SMB exposed publicly = under constant attack — always propose VPN-first alternatives.

The three-part requirement on Network 9+/10 (zone firewall)

A working external→internal flow needs ALL of:

  1. Port forward entry — use create_port_forward (name, protocol, WAN port, forward-to IP, target port). Verify with get_port_forwards after.
  2. Zone policy EXTERNAL→ ALLOW for that port (create_firewall_policy, source zone = External/WAN zone id, destination = service's zone). Predefined catch-alls usually BLOCK this direction — verify in get_firewall_policies.
  3. Service actually listening on the target host + its own firewall allowing the router/NAT source.

Hairpin NAT (works outside, fails inside)

LAN client hitting your public URL loops back at the gateway. On UDM Pro this generally works automatically once the forward exists; if it doesn't:

  • Test with external DNS name vs internal: if internal-only failure persists, add a split-horizon DNS record (public name → internal IP on your internal resolver) instead of fighting NAT — cleaner and faster.

Verification ladder

  1. From cellular (real external path): connect to WANIP:port.
  2. From LAN via public hostname (hairpin test).
  3. get_firewall_policies: watch hit counters on your new EXTERNAL→zone rule increase on attempts — counters prove path reachability and pinpoint which leg fails (rule hits=0 means packets never arrive: recheck forward + ISP).

Read the full file on GitHub · 58 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 58 lines · 58 tokens per session scan A 2c8809005a29

Subscribe to this mod's changes

unifi-port-forwarding is a skill published in the GitHub repository mikeholownych/unifi-mcp (0 stars, last pushed 12d ago), licensed MIT. It adds 58 tokens to every session and 663 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

CloudDevOps and cloud
Related

Other skills, from other repositories

gke-compute-classes

Configures, optimizes, and troubleshoots GKE ComputeClasses. Use when configuring Spot VMs with on-demand fallback, targeting specific accelerators (GPUs/TPUs) or machine families, restricting ComputeClass access, or debugging pending pods related to node pool auto-creation. Do not use for cluster-level Node Auto…

google/skills · 83 tokens

gke-reliability

Improves GKE workload reliability, using PDBs, health probes, and topology spread constraints. Use when configuring GKE workload reliability, setting up PDBs, or configuring GKE health probes (liveness, readiness, startup). Don't use for disaster recovery setup or full cluster backups (use gke-backup-dr instead).

google/skills · 73 tokens

gke-workload-security

Audits, configures, and hardens workload-level security controls for Google Kubernetes Engine (GKE) applications and namespaces. Covers running cluster security audits (auditcluster.sh), configuring Workload Identity Federation (impersonation, KSA/GSA binding, and pod setup), enforcing Network Policies (default-deny…

google/skills · 181 tokens

nemo-automodel-launcher-config

Configure NeMo AutoModel job launches for interactive runs, Slurm clusters, and SkyPilot cloud execution.

NVIDIA/skills · 30 tokens

azure-mgmt-botservice-dotnet

Azure Resource Manager SDK for Bot Service in .NET. Management plane operations for creating and managing Azure Bot resources, channels (Teams, DirectLine, Slack), and connection settings. Triggers: "Bot Service", "BotResource", "Azure Bot", "DirectLine channel", "Teams channel", "bot management .NET", "create bot".

microsoft/skills · 78 tokens

cloud-architect

Designs cloud architectures, creates migration plans, generates cost optimization recommendations, and produces disaster recovery strategies across AWS, Azure, and GCP. Use when designing cloud architectures, planning migrations, or optimizing multi-cloud deployments. Invoke for Well-Architected Framework, cost…

Jeffallan/claude-skills · 71 tokens