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.
npx skills add BagelHole/DevOps-Security-Agent-Skills --skill vpn-setupgit clone --depth 1 https://github.com/BagelHole/DevOps-Security-Agent-SkillsWrote 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.
[](https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/vpn-setup)<a href="https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/vpn-setup"><img src="https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/vpn-setup/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.
<a href="https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/vpn-setup"><img src="https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/vpn-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.03282 |
| Opus 5 | $0.00017 | $0.01641 |
| Sonnet 5 | $0.00007 | $0.00656 |
| Haiku 4.5 | $0.00003 | $0.00328 |
Grade D, and why
vpn-setup scanned grade D with 3 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 9d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- Root/sudo access on the VPN server Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://tailscale.com/install.sh | sh Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://tailscale.com/install.sh | sh How it starts
The opening of the file, as written. The whole thing — 428 lines — stays where its author put it; the contents beside it link to each section on GitHub.
VPN Setup
Configure secure VPN tunnels for remote access and site connectivity.
When to Use This Skill
Use this skill when:
- Setting up secure remote access for employees or contractors
- Connecting on-premises networks to cloud environments (site-to-site)
- Encrypting traffic between data centers or regions
- Implementing a mesh VPN for distributed infrastructure
- Providing secure access to internal services without exposing them publicly
Prerequisites
- Linux server with a public IP for VPN endpoint
- Root/sudo access on the VPN server
- Firewall rules allowing VPN traffic (UDP 51820 for WireGuard, UDP 1194 for OpenVPN)
- DNS configured for VPN hostname (optional but recommended)
- Understanding of IP subnetting and routing
WireGuard
Server Setup
# Install WireGuard (Ubuntu/Debian)
apt update && apt install -y wireguard
# Generate server keys
wg genkey | tee /etc/wireguard/server_private.key | wg pubkey > /etc/wireguard/server_public.key
chmod 600 /etc/wireguard/server_private.key
# Generate pre-shared key (optional, adds post-quantum resistance)
wg genpsk > /etc/wireguard/psk.key
chmod 600 /etc/wireguard/psk.key
Server Configuration
# /etc/wireguard/wg0.conf
[Interface]
Address = 10.0.0.1/24
ListenPort = 51820
PrivateKey = <server-private-key>
# Enable IP forwarding and NAT on startup
PostUp = sysctl -w net.ipv4.ip_forward=1
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT
PostUp = iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT
PostDown = iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
# DNS for clients
DNS = 10.0.0.1
# Peer: Alice (laptop)
[Peer]
PublicKey = <alice-public-key>
PresharedKey = <preshared-key>
AllowedIPs = 10.0.0.2/32
# Peer: Bob (mobile)
[Peer]
PublicKey = <bob-public-key>
PresharedKey = <preshared-key>
AllowedIPs = 10.0.0.3/32
# Peer: Office network (site-to-site)
[Peer]
PublicKey = <office-public-key>
PresharedKey = <preshared-key>
AllowedIPs = 10.0.0.4/32, 192.168.1.0/24
Endpoint = office.example.com:51820
PersistentKeepalive = 25
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.
- 9d ago First seen · 428 lines · 34 tokens per session scan D e4780a8e2454
vpn-setup is a skill published in the GitHub repository BagelHole/DevOps-Security-Agent-Skills (1,084 stars, last pushed 3mo ago), licensed MIT. It adds 34 tokens to every session and 3,282 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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