For example：the device’s WAN IP is 85.185.152.108-85.185.152.111，If an Internet User try to connect to the Web server 10.10.113.10 via WAN IP 85.185.152.110 and connect to the Mail server 10.10.113.11 via WAN IP 85.185.152.111，please do the following steps

Step1：Configuration->WAN->WAN IP Alias

Step2：Create WAN Alias 85.185.152.100/109/110/111，you can binding WAN Alias to WAN1 interface or WAN2 interface as you like

please click “apply” button，will shows WAN Alias list as below

Step3：LAN NAT LAN setting

Configuration->LAN->LAN NAT LAN

Create a rule, IP Address is 10.10.113.10 and go to outside via 85.185.152.110

Step4：create virtual server function

Input URL http://85.185.152.110 can access to Web Server，and the same time 10.10.113.10 goes to Internet via 85.185.152.110