Planet CS-2000 User Manual page 505

Step19 In Policy Incoming, add the following settings, and click OK.
Step20 Complete the settings.
CS-2000 interface：
WAN1 IP：61.11.11.11
WAN2 IP：211.22.22.22
LAN Port IP：192.168.1.1
CS-2000 UTM Content Security Gateway User's Manual
The third and fourth settings in policy
To deploy the mail server environment
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