Local Basic Operations 244Parameter DescriptionLAN IPEnter IP address of router on the LAN.After mapping succeeded, the system obtains IP addressautomatically without performing any configurations.WAN IPEnter IP address of router on the WAN.After mapping succeeded, the system obtains IP addressautomatically without performing any configurations.PAT TableThe settings in PAT table correspond to the UPnP PAT table on therouter. Service Name: Name of network server. Protocol: Type of protocol. Int. Port: Internal port that is mapped on the Device. Ext. Port: External port that is mapped on the router. To avoid the conflict, when setting the external port, try to usethe ports from 1024 through 5000 and avoid popular portsfrom 1 through 255 and system ports from 256 through 1023. When there are several devices in the LAN, properly arrangethe ports mapping to avoid mapping to the same external port. When establishing a mapping relationship, ensure themapping ports are not occupied or limited. The internal and external ports of TCP and UDP must be thesame and cannot be modified. Click to modify the external port.Step 3 Click Apply to complete the settings.In the browser, enter http://WAN IP: External IP port. You can visit the LAN Device.4.12.6 EmailYou can configure the email settings to enable the system to send the email as a notificationwhen there is an alarm event occurs.Step 1 Select Main Menu > NETWORK > EMAIL.The EMAIL interface is displayed. See Figure 4-214.
