User's Manual

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TL-MR3420
3G/4G Wireless N Router User Guide
3. When necessary, the external host will be able to connect to the local host using one of
the ports defined in the Incoming Ports field.

Note:
1. When the trigger connection is released, the corresponding opened ports will be closed.
2. Each rule can only be used by one host on the LAN at a time. The trigger connection of
other hosts on the LAN will be refused.
3. Incoming Ports ranges cannot overlap each other.
5.5.3 DMZ
Choose menu “Advanced
→
Forwarding
→
DMZ”, and then you can view and configure DMZ
host in the screen shown in
Figure 5-36. The DMZ host feature allows one local host to be
exposed to the Internet for a special-purpose service such as Internet gaming or
videoconferencing. The router forwards packets of all services to the DMZ host. Any PC whose
port is being forwarded must have its DHCP client function disabled and should have a new
static IP Address assigned to it because its IP Address may be changed when using the DHCP
function.
Figure 5-36 DMZ
To assign a computer or server to be a DMZ server:
1. Select the Enable radio button.
2. Enter the IP address of a local PC that is set to be DMZ host in the DMZ Host IP Address
field.
3. Click the Save button.
5.5.4 UPnP
Choose menu “Advanced
→
Forwarding
→
UPnP”, and then you can view the information about
UPnP in the screen shown in
Figure 5-37. The Universal Plug and Play (UPnP) feature allows
the devices, such as Internet computers, to access the local host resources or devices as
needed. UPnP devices can be automatically discovered by the UPnP service application on the
LAN.