ICP DAS USA GRP-520 User Manual page 20

3.3.4 VPN Client Configure
The user can set VPN Client configure here:
(1) Server Address: VPN Server address.
(2) User Name: user name for VPN Server.
(3) Password: password for VPN Server
3.3.5 DNS Server
The user can set DNS server IP here:
(1) Primary DNS Server: the device will use it to get DNS service first.
(2) Alternate DNS Server: if "Primary DNS Server" is invalid, the device will use
"Alternate DNS Server".
3.3.6 DDNS Configure
DDNS is a method of updating, in real time, a Domain Name System (DNS) to point
to a changing IP address on the Internet:
GRP-520 User Manual, V1.30, Aug. 2015
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