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12.7. Configure the Firewall to Allow Telemetry Service Traffic

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The Telemetry service receives connections on port 8777. The firewall on the service node must be configured to allow network traffic on this port. All steps in this procedure must be performed on the server hosting the Telemetry service, while logged in as the root user.

Procedure 12.5. Configuring the Firewall to Allow Telemetry Service Traffic

  1. Open the /etc/sysconfig/iptables file in a text editor.
  2. Add an INPUT rule allowing TCP traffic on port 8777. The new rule must appear before any INPUT rules that REJECT traffic:
    -A INPUT -p tcp -m multiport --dports 8777 -j ACCEPT
  3. Save the changes to the /etc/sysconfig/iptables file.
  4. Restart the iptables service to ensure that the change takes effect:
    # systemctl restart iptables.service
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