User`s manual

Content Security Gateway User’s Manual
- 137 -
Step 3. In To Destination table, choose Remote Gateway-Fixed IP, enter the IP desired to be connected,
company A’s subnet IP and mask, 192.168.10.0 and 255.255.255.0 respectively.
Step 4. In Authentication Method Table, choose Preshare and enter the Preshared Key. (The max length is
100 bits.)
Step 5. In Encapsulation -> ISAKMP Algorithm, choose 3DES for ENC Algorithm and MD5 for AUTH
Algorithm. And select Group 1 to connect.
Step 6. Choose GRE/ IPSec and enter GRE Source IP, 192.168.50.200 and GRE Remote IP,
192.168.50.100.
Note. The Source IP and Remote IP should be in the same C Class.
Step 7. In IPSec Algorithm Table, choose Data Encryption + Authentication. We choose 3DES for ENC
Algorithm and MD5 for AUTH Algorithm.