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    Introducing Netgate Nexus: Multi-Instance Management at Your Fingertips.

    pfSense OpenVPN multiple servers crash

    Scheduled Pinned Locked Moved OpenVPN
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    • slonproS Offline
      slonpro
      last edited by

      I am running pfSense with multiple OpenVPN servers configured (several instances on different interfaces).

      Total number of connected users is around ~200.

      Authentication is done via:

      • RADIUS (FreeRADIUS)
      • 2FA (OTP / push-based)

      When the main WAN link briefly goes down (even for a few seconds), all VPN clients disconnect.
      After the link is restored, all clients attempt to reconnect simultaneously (reconnect storm).
      At that moment pfSense becomes unstable and starts behaving incorrectly:
      OpenVPN clients fail to reconnect properly
      OpenVPN see "Unable to contact daemon
      Service not running?"
      e81d9bf9-2773-4ab2-a666-f76b00032fad-image.png

      What is the correct way to handle mass OpenVPN reconnect storms on pfSense?

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