Dahua NVR21-4KS3 Series User Manual page 188

4) Enter your email address, and then click Next.
The email address is used to receive the security code for password resetting.
If you do not want to enter email information, cancel the selection of the checkbox and
then click Next or Skip.
Step 6 Set camera IP address.
● DHCP: There is no need to enter IP address, subnet mask, and default gateway. Device
automatically allocates the IP address to the camera.
● Static: You need to enter IP address, subnet mask, and default gateway.
Figure 5-62 Password protection
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User's Manual