Dahua NVR52-4KS2 Series User Manual page 492

By viewing logs, you can learn about the IP addresses that attempt to log in to the device and
key operations of the logged users.
3. Configure network log
Due to the limited storage capacity of devices, the stored log is limited. If you need to save the
log for a long time, it is recommended to enable the network log function to ensure that the
critical logs are synchronized to the network log server for tracing.
Software Security
1. Update firmware in time
According to the industry standard operating specifications, the firmware of devices needs to be
updated to the latest version in time in order to ensure that the device has the latest functions
and security. If the device is connected to the public network, it is recommended to enable the
online upgrade automatic detection function, so as to obtain the firmware update information
released by the manufacturer in a timely manner.
2. Update client software in time
We recommend you to download and use the latest client software.
Physical Protection
It is recommended that you carry out physical protection for devices (especially storage devices),
such as placing the device in a dedicated machine room and cabinet, and having access control
and key management in place to prevent unauthorized personnel from damaging hardware and
other peripheral equipment (e.g. USB flash disk, serial port).
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User's Manual