PLANET BM-2101 - Manual (Page 171)

We set 4 environments.
No . Range The Application Environment
Example 1 Mapped
IP
To make the single internal server which provides the services
of FTP, web, mail, can real working by the policy .
Example 2 Virtual
Server
Use the virtual server instead of many of the internal server
which only provide single service by policy management. (For
example , use the web service ) .
Example 3 Virtual
Server
The external user use the VoIP to communicate to the internal
user. VoIP service portTCP 1720 , TCP 15328-15333 ,
UDP 15328-15333
Example 4 Virtual
Server
Use the virtual server instead of many of the internal server
which provide the same services by policy management.(For
example , use the HTTP , POP3 , SMTP , DNS service group)
The Deployment
To apply two ADSL lines included the static IP address .
WAN1 static IP is 61.11.11.10 ~ 61.11.11.14
WAN2 static IP is 211.22.22.18 ~ 211.22.22.30