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 chaterm/terminal-skills --skill vpngit clone --depth 1 https://github.com/chaterm/terminal-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/chaterm/terminal-skills/vpn)<a href="https://agentmods.dev/skills/chaterm/terminal-skills/vpn"><img src="https://agentmods.dev/badge/skills/chaterm/terminal-skills/vpn/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/chaterm/terminal-skills/vpn"><img src="https://agentmods.dev/badge/skills/chaterm/terminal-skills/vpn.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 | $0.00007 | $0.02384 |
| Opus 5 | $0.00003 | $0.01192 |
| Sonnet 5 | $0.00001 | $0.00477 |
| Haiku 4.5 | $0.00001 | $0.00238 |
Grade A, and why
vpn 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 397 lines — stays where its author put it; the contents beside it link to each section on GitHub.
VPN 配置与管理
概述
OpenVPN、WireGuard、IPSec VPN 配置与管理技能。
WireGuard
安装
# Debian/Ubuntu
apt install wireguard
# CentOS/RHEL
yum install epel-release elrepo-release
yum install kmod-wireguard wireguard-tools
# 验证安装
wg --version
生成密钥
# 生成私钥
wg genkey > privatekey
# 从私钥生成公钥
wg pubkey < privatekey > publickey
# 一步生成
wg genkey | tee privatekey | wg pubkey > publickey
# 生成预共享密钥（可选，增强安全）
wg genpsk > presharedkey
服务端配置
# /etc/wireguard/wg0.conf
[Interface]
Address = 10.0.0.1/24
ListenPort = 51820
PrivateKey = <server_private_key>
# 启用 IP 转发
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
[Peer]
PublicKey = <client_public_key>
AllowedIPs = 10.0.0.2/32
客户端配置
# /etc/wireguard/wg0.conf
[Interface]
Address = 10.0.0.2/24
PrivateKey = <client_private_key>
DNS = 8.8.8.8
[Peer]
PublicKey = <server_public_key>
Endpoint = server.example.com:51820
AllowedIPs = 0.0.0.0/0
PersistentKeepalive = 25
管理命令
# 启动
wg-quick up wg0
systemctl start wg-quick@wg0
# 停止
wg-quick down wg0
systemctl stop wg-quick@wg0
# 开机启动
systemctl enable wg-quick@wg0
# 查看状态
wg show
wg show wg0
# 添加 peer
wg set wg0 peer <public_key> allowed-ips 10.0.0.3/32
OpenVPN
安装
# Debian/Ubuntu
apt install openvpn easy-rsa
# CentOS/RHEL
yum install epel-release
yum install openvpn easy-rsa
初始化 PKI
# 创建 CA 目录
make-cadir ~/openvpn-ca
cd ~/openvpn-ca
# 初始化 PKI
./easyrsa init-pki
# 创建 CA
./easyrsa build-ca nopass
# 生成服务器证书
./easyrsa gen-req server nopass
./easyrsa sign-req server server
# 生成 DH 参数
./easyrsa gen-dh
# 生成 TLS 密钥
openvpn --genkey secret ta.key
# 生成客户端证书
./easyrsa gen-req client1 nopass
./easyrsa sign-req client client1
服务端配置
# /etc/openvpn/server.conf
port 1194
proto udp
dev tun
ca ca.crt
cert server.crt
key server.key
dh dh.pem
tls-auth ta.key 0
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
keepalive 10 120
cipher AES-256-GCM
auth SHA256
user nobody
group nogroup
persist-key
persist-tun
status /var/log/openvpn-status.log
log-append /var/log/openvpn.log
verb 3
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.
- 10d ago First seen · 397 lines · 7 tokens per session scan A e62bd5903cf5
vpn is a skill published in the GitHub repository chaterm/terminal-skills (59 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 7 tokens to every session and 2,384 once invoked, about $0.0000 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 2026-08-30.
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