GRP-530M / GRP-540M User Manual
Version 1.2.0
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(5) Period: the period time (seconds) to update your address.
(6) Enable: Enable DDNS function.
3.3.7 VPN (only support the firmware after v1.2.1)
User can set VPN function and use DDNS or FTP to get the VPN IP:
(1) VPN Server: the address of VPN service provider.
(2) VPN Username: the username of VPN service.
(3) VPN Password: the password of VPN service.