TL-R470T+ Load Balance Broadband Router User Guide
44
¾ External Port - This displays the external port, which the router opened for the application.
¾ Protocol - This displays the protocol for the application.
¾ Internal Port - This displays the internal port, which the router opened for local host.
¾ IP Address - The UPnP device that is currently accessing the router.
¾ Status - This displays the status. Enabled means that the port is still active, Disabled
means that the port is inactive.
4.5.5 ALG
Choose menu “Forwarding→ALG”, you can view and configure ALG (Application Layer
Gateway) service in the screen (shown in Figure 4-29). Some special protocols such as FTP,
H.323, SIP, PPTP and IPSec will work properly only when ALG service is enabled.
Figure 4-29
¾ FTP ALG - Enable or disable FTP ALG. The default setting is enabled. It is recommended to
keep the default setting if no special requirement.
¾ H.323 ALG - Enable or disable H.323 ALG. The default setting is enabled. H.323 is used for
various applications such as NetMeeting and VoIP.
¾ PPTP ALG - Enable or disable PPTP ALG. The default setting is enabled. It is recommended
to keep default if no special requirement.
¾ IPSec ALG - Enable or disable IPSec ALG. The default setting is enabled. It is recommended
to keep default if no special requirement.
4.6 Security Choose menu “Security”, you can see the submenus under the main menu: Firewall, IP
Address Filtering, Domain Filtering, MAC Filtering, and Screen.
Figure 4-30