D-Link WIRELESSADSLROUTER DSL-G604T - Manual (Page 37)

DSL-G604T 54Mbps Wireless ADSL2/2+ Modem/Router Manual
NAT
NAT improves network security in effect by hiding the private network behind one
global and visible IP address. NAT address mapping can also be used to link two IP
domains via a LAN-to-LAN connection. Use the pull-down menu to Enable or Disable
NAT on the Router
Firewall
The Firewall allows the Router to enforce policies to protect against certain kinds of
attacks. To enable the firewall on the Router, use the pull-down menu and select
Enabled.
Click Apply to set the Static IP address for the DSL-G604T.
PPPoE/PPPoA
Selecting this option in the WAN Settings will change your screen to look like the one seen below.
PPP or Point-to-Point protocol is a standard method of establishing a network connection/session
between networked devices. Different forms of PPP include PPPoA and PPPoE, and they involve an
authentication process that requires a username and password to gain access to the network. PPPoE
(PPP over Ethernet), as described in RFC 2516, is a method of using PPP through the Ethernet
network. PPPoA (PPP over ATM) configuration is over ATM and requires the same basic information
as the previously discussed PPPoE. Both configuration menus are identical. To configure the
connection for PPPoE/PPPoA, perform the steps listed below. Some of the settings do not need to be
changed the first time the device is set up, but can be changed later if you choose.
Figure 4- 6. WAN Settings window for PPPoE/PPPoA
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