Planet Networking & Communication CS-2001 User Manual page 307

Step 37.
Check Data integrity and encryption, and select "MD5" for
Integrity algorithm and "3DES" for Encryption algorithm. Tick
Generate a new key every, and type "28800" in the seconds field, and then
click OK to return to the New Rule Properties window
（Figure 11-98）
Figure 11-98 Customizing Security Method
306