What information of the camera should I provide to contact technical support for help?

Please provide the following information while contacting technical support for help:

1. Model name of the camera.
2. MAC address.
   How to know the model name and MAC address of the camera
3. Firmware version.
   How to know the firmware version of the camera?
4. Problem description.
5. Date and time when the problem happened.
6. Server status report.
7. Camera configuration files with the password of the root account.
   How to get the server status report and the configuration file of the camera?
8. Snapshots or video clips to show the problem.

We might need the following information, but they are not compulsory:

1. Public IP (with port if any).
2. Port forwarding for telnet port (port 23).
3. Reproducing steps/ history.
4. Setparam log.
   How to enable the set parameter log and verify which commands and from which IP have been sent to the camera?