Vivotek NR9682-v2 64-Channel NVR (No HDD) - Manual (Page 66)

VIVOTEK - A Leading Provider of Multimedia Communication Solutions
66 - User's Manual
The NVR runs an OpenVPN client that makes remote connection via the RESTful (Repretational
State Transfer) API (Application Programming Interface) service to a VPN-enabled VAST server
running on the remote site. The applicable service port number ranges from 1
to 65534. The
default is p ort #3443. The NVR automatically registers with CA cert key and becomes a VAST
sub-station over a VPN tunnel. Once set, the VAST2 can automatically connect the NVR.
Note that on the side of the VAST server making connection via the OpenVPN, the server/client
configuration should be properly configured. On the mobile NVR, a proper gateway setting
should be made for VPN connection.
For the server configuration, the configuration file is placed in:
C:\Program Files (x86)\VIVOTEK Inc\VAST\Server\OpenVPN\config\server\server.ovpn
You can edit your VPN IP subnet parameters according to your network configuration. The
contents of the editable text file looks like this:
port 3939
proto udp
dev tun
ca ca.crt
cert server.crt
key server.key
dh dh.pem
server 10.6.0.0 255.255.0.0
topology subnet
client-to-client
client-config-dir "C:\\Program Files (x86)\\VIVOTEK Inc\\VAST\\Server\\OpenVPN\\ccd"
keepalive 10 30
cipher AES-256-CBC
max-clients 50000
persist-key
persist-tun
status openvpn-status.log
log-append openvpn.log
verb 3
mute 20
sndbuf 262144
rcvbuf 262144
tls-server
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.