DumbMonit
IntegrationsNetwork and firewalls
Monitor OpenVPN server with DumbMonit
An OpenVPN server through its management interface: version, whether it reports itself connected, and every client currently in session with its addresses and traffic.
DocumentationOfficial website: OpenVPN
Product descriptions are in English, as in the product. The page labels follow your language.
What DumbMonit watches
OpenVPN's server process exposes its own control channel, the management interface: a local TCP listener, separate from the VPN itself, made for a monitoring tool rather than for a VPN client. DumbMonit reads it like any management client: the server's version, whether it reports itself connected, and every client currently in session, with its real and virtual address and its traffic. Nothing is ever sent that would change the server's state or disconnect a client. Clients are transient by nature — a laptop that goes to sleep simply disappears from the next reading. DumbMonit does not try to remember who was connected five minutes ago; it reports only who is connected now, plus the client…
Typical use. OpenVPN server through its management interface: version, state, connected clients
Examples
- OpenVPN Access Server
- A plain openvpn --server on Linux
- pfSense or OPNsense OpenVPN (management enabled)
How it connects
What you need
- Management passwordThe shared password set by the third argument of the server's "management" directive.
No account needed.
Network ports to open
7505/TCPManagement interface (default)
Setup steps: Turn on the management interface
Add this line to the server's configuration (server.conf, or as.conf on OpenVPN Access Server) and restart OpenVPN.
management 0.0.0.0 7505Recommended: protect it with a password, put in a file readable by the OpenVPN process alone and added as a third argument.
management 0.0.0.0 7505 /etc/openvpn/management-passwordIn DumbMonit, enter the server's address (vpn.lan, port 7505) and the management password if one is set.
Heads-up. Anyone who reaches the management port and knows the password can disconnect clients and reconfigure the running server: allow only the DumbMonit host in the firewall and set a password.