Dahua DH-XVR5104HS-4KL-I3 User Manual page 333

Step 2 Configure parameters.
Area Parameter
Enable
Private Encryption
Protocol
Type
Update Period
of Secret Key
Enable
RTSP over
TLS
Select a device
certificate
Audio/video transmission
Table 5-69 Transmission parameters
Description
Enables stream frame encryption by using private protocol.
There might be safety vulnerability if this service is disabled.
Use the default setting.
Secret key update period.
Value range: 0–720 hours. 0 means never update the secret key.
Default value: 12.
Enables RTSP stream encryption by using TLS.
There might be data breach if this service is disabled. We
recommend that you enable this function.
Select a device certificate for RTSP over TLS.
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User's Manual