AirLive RS-2000 - Manual (Page 266)

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Setting IPSec VPN connection between two Ovislink-RS2000
(Adopt GRE Packets)
Preparation
Company A WAN IP: 61.11.11.11
LAN IP: 192.168.10.X
Company B WAN IP: 211.22.22.22
LAN IP: 192.168.20.X
This example takes two Ovislink-RS2000 as work platform. Suppose Company A
192.168.10.100 is going to have VPN connection with Company B 192.168.20.100
and download the resource. (Connection adopts GRE/IPSec Algorithm)
The Default Gateway of Company A 192.168.10.100 is the LAN IP of the
Ovislink-RS2000 192.168.10.1. Follow the steps below:
STEP 1﹒Enter the default gateway of Ovislink-RS2000 of Company A 192.168.10.1
and select IPSec Autokey in VPN. Click New Entry