Planet MH-2300 User Manual page 179

Step 3. Select "Remote Gateway (Static IP or Hostname)" for Remote
Settings, and enter the gateway address of Company B.
Step 4. Select "Pre-Shared Key" for Authentication Method, and enter a
Pre-Shared Key String. (The maximum length of the string is 62
characters.)
Step 5. In the Encryption and Data Integrity Algorithms section, select
"3DES" for Encryption Algorithm, select "MD5" for Authentication
Algorithm, and select "Diffie-Hellman 1" for Key Group.
Step 6. Select the radio box of "Use both algorithms" under the IPSec
Settings section, select "3DES" for Encryption Algorithm, and select
"MD5" for Authentication Algorithm.
Step 7. In the Advanced Settings (Optional) section, select "DH 1" for PFS
Key Group, enter "3600" in the ISAKMP SA Lifetime field and
"28800" in the IPSec SA Lifetime field, and then select "Main Mode"
for IKE Negotiation.
The Remote Settings
The Authentication Method Settings
The Encryption and Data Integrity Algorithms
The IPSec Algorithm Settings
The Advanced Settings
Gigabit Multi-Homing VPN Security Gateway
179
MH-2300