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Remote access (OpenVPN)

VPN > Remote Access (OpenVPN) configures an OpenVPN road warrior server. Remote users, on laptops or phones, connect to it from anywhere on the internet and get secure access to your private networks.

Before you start​

  • Create a user database with the people who may connect, see Users and groups.
  • Decide the VPN network: a private network used only by VPN clients. Choose one that does not overlap with any other network you use, including the home networks of your users if you can foresee them.
  • Make sure the public address or a DNS name of the unit is known to your users.

Creating the server​

Choose Add server (or configure the default one) and set:

SettingMeaning
User databaseWhere the accounts come from
AuthenticationWhat users present: a password, a certificate, or both. You can also require a one-time code
Protocol and portUDP is preferred for performance; TCP can pass through restrictive networks
VPN networkThe virtual network for clients
Public addressesThe names or addresses that clients use to reach the server
RoutesThe networks clients can reach. Add the networks of your LAN, or send all traffic through the VPN
Client to clientWhether clients can reach each other
DHCP optionsExtra options sent to clients, useful to reach a Windows network over the VPN

When you create the server you can also choose to create accounts for all the users of the database at once. This choice is available only at creation. The certificates created have a validity of ten years.

The unit opens the required port in the firewall automatically.

Accounts​

The accounts list shows who can connect. Depending on the authentication mode, a user needs a password, a valid certificate, or both. Changes take effect immediately.

For each account you can:

  • Download the client configuration and give it to the user. Some clients also support a QR code.
  • Reserve an address so the user always gets the same VPN address.
  • Renew the certificate. This revokes the previous one, so the user must download the new certificate to reconnect.
  • Disable or delete the account. Deleting an account also deletes its certificate.

Connected clients and history​

The page shows who is connected now, how long for and how much they transferred. The history lists past sessions and can be filtered by user and by date range.

Deleting the server​

Deleting the server deletes all accounts associated with it, and it cannot be undone. Export what you need first.

Client software​

Use any OpenVPN compatible client. The downloaded configuration contains what the client needs. Have users install a client, import the file, and connect.