Content Security Gateway User’s Manual
Step 6.
In IPSec Algorithm Table, choose Data Encr Authentication. We choose 3DES for ENC
Algorithm and MD5 for AUTH Algorithm.
Step 7.
Choose GROUP 1 as the Perfect Forward Secrecy setting, and leave the default setting with 28800
seconds in IPSec Lifetime and 3600 seconds for ISAKMP Lifetime.
Step 8
. Click OK to finish the setting of Company A.
Step 9.
Click Tunnel and press New Entry to configure the further setting.
Step 10.
Enter Site_A as the new tunnel name, and select LAN interface as the VPN source. Fill LAN IP
subnet 192.168.10.0 with subnet mask IP 255.255.255.0.
Step 11.
In To Destination table, fill company B’s subnet IP and mask, 192.168.20.0 and 255.255.255.0
respectively.
Step 12.
In IPSec / PPTP Setting, select VPN_A as the available tunnel.
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