Allied Telesis AT-AR256E - Manual (Page 20)

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Figure 12 (Management IP)
The Apply button will temporarily save this connection. To make the change permanent, you
need to click on Save Settings (at the side of the page). At the system commands page, click on
Save All.
4.5.3 Firewall/NAT Services
You can enable or disable Firewall and NAT when you are creating a new Connection. By
default, both NAT and Firewall are enabled. Enabling the firewall will allow the router to activate
the Stateful Packet Inspection feature to incoming traffic from the WAN for better security.
The Apply button will temporarily save this connection. To make the change permanent, you
need to click on Save Settings (at the side of the page). At the system commands page, click on
Save All.
4.6 Advanced (For Advance User Only)
The ADSL router supports a host of advanced features. For basic ADSL router functionality, the
user does not need to utilise these advanced features. The features help with routing, security,
port configuration, and plug-and-play capability.
4.6.1 UPnP
UPnP NAT and Firewall Traversal allow traffic to pass-through the ADSL router for applications
using the UPnP protocol. This feature requires one active ADSL connection. In the presence of
multiple ADSL connections, select the one over which the incoming traffic will be present, for
example the default Internet connection.