Identifying the source of the heartbeat messages (recommended)

This is the preferred solution because it will work whether your ISP uses NetBIOS or ICMP (Internet Control Message Protocol) to check your connection, and it allows you to maintain high security for the Public Zone.

To identify the server your ISP uses to check your connection:

  1. When your ISP disconnects you, click Alerts & Logs|Log Viewer.
  2. In the alerts list, find the alert that occurred at the time you were disconnected.
  3. In the Entry Detail area, note the Source DNS detected.

    If you’re not able to identify the server this way, contact your ISP to determine which servers need access permission.

  4. After you have identified the server, add it to the Trusted Zone.

    See Adding to the Trusted Zone.

See Also

Allowing ISP Heartbeat messages

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