Vivotek ND9541P User Manual page 153

Note that the NVR and VAST server should have a similar time setting when exchanging
certificate information. Otherwise, the mutual handshake authentication process may fail.
Enter the OpenVPN DNS domain name and the credentials on the NVR network service
configuration page.
A public IP or domain name must be configured on the VAST server for the access through the
Internet. The IP or domain name can contain alpha-numeric characters [0-9][a-z][A-Z][-]. Hyphen
[-] can not be the beginning or the ending character.
VIVOTEK - Built with Reliability
To authorize access to NVR
from VAST
User's Manual - 153