openconnect-saml 0.4.0

OpenConnect wrapper with Azure AD (SAML) SSO support for Cisco SSL-VPNs

🔐 openconnect-saml

OpenConnect wrapper with Azure AD / SAML authentication for Cisco AnyConnect VPNs

Maintained fork of vlaci/openconnect-sso with improvements from kowyo/openconnect-lite

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✨ Features

Feature	Description
🖥️ GUI Mode	Embedded Qt6 WebEngine browser with auto-fill
🌐 Chrome Browser	Playwright-based Chromium backend — headless or visible
🤖 Headless Mode	No display needed — works on servers, containers, SSH
🔑 Auto-Login	Username, password, and TOTP auto-injection
🌍 2FAuth	Fetch TOTP from a remote 2FAuth instance
🔒 Keyring	Credentials stored securely (with in-memory fallback)
📱 MFA Support	TOTP, Microsoft Authenticator number matching
🔐 FIDO2/YubiKey	Hardware security key support for WebAuthn challenges
🛡️ Security	XXE protection, no credential logging, safe config permissions
🔄 Auto-Reconnect	Automatic re-authentication and reconnection on VPN drops
⚙️ Systemd Service	Install as a persistent system service with one command
🌐 Proxy	SOCKS and HTTP proxy support
📜 Certificates	Client certificate handling with auto-fallback
🐳 Docker-ready	Headless mode for containerized deployments

📦 Installation

# Headless (no GUI dependencies)
pip install openconnect-saml

# With GUI browser (Qt6 WebEngine)
pip install "openconnect-saml[gui]"

# With Chrome/Chromium browser (Playwright)
pip install "openconnect-saml[chrome]"
playwright install chromium

# With FIDO2/YubiKey support
pip install "openconnect-saml[fido2]"

# Arch Linux (AUR)
yay -S openconnect-saml

Requires: Python ≥ 3.10 and OpenConnect in PATH

🚀 Quick Start

# GUI mode (default)
openconnect-saml --server vpn.example.com --user [e-mail]

# Headless mode (servers, containers, SSH)
openconnect-saml --server vpn.example.com --user [e-mail] --headless

📖 Usage

GUI Mode

openconnect-saml --server vpn.example.com
openconnect-saml --server vpn.example.com/usergroup
openconnect-saml --profile /opt/cisco/anyconnect/profile

Headless Mode

No display server required — perfect for servers, CI/CD, and containers:

# Auto-authenticate with saved credentials
openconnect-saml --server vpn.example.com --headless --user [e-mail]

# Output auth cookie for scripting
openconnect-saml --server vpn.example.com --headless --authenticate json

How it works:

1. Auto: HTTP requests + form parsing → submits credentials without a browser
2. Fallback: If auto-auth fails (CAPTCHA, unsupported MFA) → prints URL + starts local callback server → authenticate in any browser

Chrome/Chromium Browser

Use Playwright-based Chromium instead of Qt WebEngine:

# Visible Chrome window
openconnect-saml --server vpn.example.com --browser chrome

# Headless Chrome (no display needed)
openconnect-saml --server vpn.example.com --browser headless

Auto-Reconnect

Keep the VPN alive — automatically re-authenticates and reconnects on drops:

# Unlimited retries with backoff (30s, 60s, 120s, 300s)
openconnect-saml --server vpn.example.com --headless --reconnect

# Limit to 5 reconnection attempts
openconnect-saml --server vpn.example.com --headless --reconnect --max-retries 5

Systemd Service

Install as a persistent system service:

# Install and enable
sudo openconnect-saml service install --server vpn.example.com --user [e-mail]

# Manage
sudo openconnect-saml service start --server vpn.example.com
sudo openconnect-saml service stop --server vpn.example.com
openconnect-saml service status
openconnect-saml service logs --server vpn.example.com

# Remove
sudo openconnect-saml service uninstall --server vpn.example.com

FIDO2/YubiKey

Hardware security key support for WebAuthn challenges during SAML authentication:

# FIDO2 is detected automatically during auth flows
# When a WebAuthn challenge is encountered:
# → Terminal prompt: "Touch your security key..."
# → PIN prompt if required
pip install "openconnect-saml[fido2]"

2FAuth TOTP Provider

Fetch TOTP codes from a 2FAuth instance instead of storing secrets locally:

# Via CLI flags
openconnect-saml --server vpn.example.com --headless --user [e-mail] \
  --totp-source 2fauth \
  --2fauth-url https://2fauth.example.com \
  --2fauth-token YOUR_PERSONAL_ACCESS_TOKEN \
  --2fauth-account-id 42

# Or via config file (~/.config/openconnect-saml/config.toml)

[credentials]
username = "[e-mail]"
totp_source = "2fauth"

[2fauth]
url = "https://2fauth.example.com"
token = "eyJ0eXAiOiJKV1QiLC..."
account_id = 42

Setup:

1. Install 2FAuth and add your VPN TOTP account
2. Create a Personal Access Token in 2FAuth (Settings → OAuth → Personal Access Tokens)
3. Note the account ID (visible in the URL when editing the account, or via API)
4. Configure openconnect-saml with --totp-source 2fauth or totp_source = "2fauth" in config

⚠️ HTTPS is strongly recommended for the 2FAuth URL. HTTP connections will trigger a warning.

Advanced Options

--headless              # No browser, terminal-only authentication
--browser BACKEND       # Browser backend: qt, chrome, headless
--totp-source SOURCE    # TOTP provider: local (default) or 2fauth
--2fauth-url URL        # 2FAuth instance URL
--2fauth-token TOKEN    # 2FAuth Personal Access Token
--2fauth-account-id ID  # 2FAuth account ID for VPN TOTP
--reconnect             # Auto-reconnect on VPN drops
--max-retries N         # Max reconnection attempts (default: unlimited)
--no-sudo               # Don't use sudo (for --script-tun)
--ssl-legacy            # Enable legacy SSL renegotiation
--csd-wrapper PATH      # CSD/hostscan wrapper script
--timeout SECONDS       # HTTP timeout (default: 30)
--window-size WxH       # Browser window size (default: 800x600)
--on-connect CMD        # Run command after VPN connects
--on-disconnect CMD     # Run command after VPN disconnects
--reset-credentials     # Clear saved keyring entries
--authenticate FORMAT   # Auth only, output cookie (json|shell)

🐳 Docker

FROM python:3.12-slim
RUN pip install openconnect-saml && \
    apt-get update && apt-get install -y openconnect && rm -rf /var/lib/apt/lists/*
ENTRYPOINT ["openconnect-saml", "--headless"]

docker run -it --cap-add=NET_ADMIN --device=/dev/net/tun \
  vpn-client --server vpn.example.com --user [e-mail]

⚙️ Configuration

Config file: ~/.config/openconnect-saml/config.toml

[default_profile]
server = "vpn.example.com"
user_group = ""
name = "My VPN"

[credentials]
username = "[e-mail]"

Auto-fill Rules

Custom rules per URL pattern:

[[auto_fill_rules."https://*"]]
selector = "input[type=email]"
fill = "username"

[[auto_fill_rules."https://*"]]
selector = "input[name=passwd]"
fill = "password"

[[auto_fill_rules."https://*"]]
selector = "input[id=idTxtBx_SAOTCC_OTC]"
fill = "totp"

TOTP Configuration

For automated TOTP, add your secret to the config:

[credentials]
username = "[e-mail]"
# TOTP secret is stored in keyring on first use
# Or set via: openconnect-saml --user [e-mail] (prompts for secret)

To clear stored credentials:

openconnect-saml --user [e-mail] --reset-credentials

🔄 Migrating from openconnect-sso

# Replace openconnect-sso with openconnect-saml
pip uninstall openconnect-sso
pip install openconnect-saml

# Rename config directory
mv ~/.config/openconnect-sso ~/.config/openconnect-saml

# Same CLI, new name
openconnect-saml --server vpn.example.com

🛠️ Development

git clone https://github.com/mschabhuettl/openconnect-saml
cd openconnect-saml
pip install -e ".[dev]"
pytest -v
ruff check .

🙏 Credits

• László Vaskó (vlaci) — original openconnect-sso
• Kowyo — openconnect-lite modernization
• Community contributors for issues, PRs, and testing

📄 License

GPL-3.0