OpenVPN Monitor & Profiler

Web suite for OpenVPN servers: real-time traffic monitoring, history/analytics, PKI and client-profile management, one UI.

Component	Dir	Stack	Default port
UI	APP_UI/	Vue 3 + Vite, served by Nginx	80 (Docker) / 8088 (native, TLS)
Monitoring API	APP_CORE/	Flask (gunicorn)	5001 (internal)
Data gatherer	APP_CORE/	Python daemon	-
Profiler API	APP_PROFILER/	FastAPI (uvicorn)	8000 (internal)

Nginx is the only public entry point: / UI, /api/ Monitoring API, /profiles-api/ Profiler API.

Quick start

• Containers: docker-compose up -d --build, open http://<host>. Details: Deployment: Docker.
• System services (systemd / OpenRC, no containers): Deployment: native.

After the first start: sign in, open PKI Configuration → Initialize PKI, generate the server config, start OpenVPN, create profiles.

First login and credentials

No default user is created. Seed the initial admin with OVPMON_INITIAL_ADMIN_USER / OVPMON_INITIAL_ADMIN_PASSWORD on first start (empty users table only), then remove them. Change the username and password and enable 2FA in Account.

Security defaults

• No built-in account; the username can be changed in Account (API POST /api/auth/change-username).
• All API routes require a JWT; 2FA-pending tokens are accepted only by /api/auth/verify-2fa.
• Server/PKI settings are validated before they reach server.conf (ports, networks, routes, DNS, host names, script paths, DN fields); scripts run only from /etc/openvpn/scripts/.
• Native deployments: APIs run as user ovpmon; a root helper installs the validated server.conf, publishes the CRL (crl_verify) and controls openvpn through doas (fixed commands).
• CORS is same-origin only unless OVPMON_CORS_ORIGINS is set; TLS on the panel port; brute-force limits on login (Nginx + app, fail2ban jail in the deployment guide).

Configuration

config.ini per component; overridden by OVPMON_{SECTION}_{KEY} environment variables.

Variable	Purpose
OVPMON_API_SECRET_KEY	JWT secret shared by both APIs (must be random)
OVPMON_INITIAL_ADMIN_USER / _PASSWORD	One-time admin seed
OVPMON_CORS_ORIGINS	Extra allowed CORS origins, comma-separated (empty = same-origin only)
OVPMON_OPENVPN_MONITOR_DB_PATH	Monitoring DB
OVPMON_PROFILER_DB_PATH	Profiler DB
OVPMON_OPENVPN_MONITOR_LOG_PATH	openvpn-status.log path
OVPMON_LOGGING_LEVEL	INFO / DEBUG

Documentation

• Index: DOCS/General/Index.md
• Deployment: Docker · System services · Nginx · Service management
• Security model: Security Architecture · root helper and doas rules: DOCS/General/privilege-separation/
• APIs: Monitoring · Profiler

Changes and results

Date	Change	Document
2026-09-30	Security hardening: path traversal, 2FA token bypass, CORS, log leak, HTTPS, SSH, fail2ban	Security hardening
2026-09-30	Admin username change (API + UI), no built-in default admin	Admin username change
2026-09-30	Validation of server/PKI settings (config injection into the root-written OpenVPN config)	Settings validation
2026-09-30	API services run as an unprivileged user; root helper validates and installs the OpenVPN config, publishes the CRL	Privilege separation (includes CRL publishing for crl_verify)
2026-09-30	Route OpenVPN clients through a Hysteria2 tunnel to an exit node	Egress via Hysteria2

Notes

• Native deployments run the APIs as user ovpmon; OpenVPN config install and service control go through a root helper (doas, fixed commands): see Privilege separation.
• Keep easy-rsa/, client-config/, databases and *.env out of git: they contain private keys and secrets.