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D-Link DSL-226 User Manual
Section 4 - Configuration
NAT
Go to
Features > Firewall
and click the
NAT
tab to configure the router’s
advanced firewall settings such as DMZ and Application Level Gateway (ALG).
Interface Name:
Select the interface where the packets coming into the WAN port
will be redirected to a specific IP address in DMZ. PVC denotes the
WAN port configured with ADSL service and PTM denotes the WAN
port configured with VDSL service.
Enable DMZ
Enable or disable Demilitarized Zone (DMZ). Devices in this zone
are completely exposed to threats over the Internet. This is not
recommended unless they are servers that must be exposed to the
public network.
DMZ IP Address
If you enable DMZ, enter the IP address of the client to be placed in
this zone.
Application Level Gateway (ALG) Configuration
Different ALGs provide special handling for specific protocols or applications to allow data
of these applications to pass through an NAT-enabled router. For each protocol type, click
Enable
to activate the ALG. A number of ALGs for common applications are enabled by
default.
Enable L2TP
ALG:
Allows multiple machines on the LAN to connect to their corporate
network using the Layer 2 Tunneling Protocol (L2TP).
