Advanced Configuration
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N300 Wireless ADSL2+ Modem Router DGN2200Mv2
WAN Settings
To configure WAN settings:
Select
Advanced > WAN Setup
to display the following screen.
Setting
Description
Enable PPPoE Relay
When enabled, this feature will allow a PPPoE client on a local PC to
connect to a remote PPPoE server with the gateway acting as a relay
agent.
Disable Port Scan and DoS
Protection
The SPI (Stateful Packet Inspection) firewall protects your LAN against
denial of service attacks. This should only be disabled in special
circumstances.
Default DMZ Server
See
Respond to a Ping on an Internet
WAN Port
If you want the wireless modem router to respond to a ping from the
Internet, select the
Respond to Ping on Internet Port
check box. This
should be used only as a diagnostic tool, since it allows your wireless
modem router to be discovered. Do not select this check box unless you
have a specific reason to do so.
MTU Size
The normal MTU (Maximum Transmit Unit) value for most Ethernet
networks is 1500 bytes, or 1492 bytes for PPPoE connections. For some
ISPs you might need to reduce the MTU. But this is rarely required, and
should not be done unless you are sure it is necessary for your ISP
connection.
Disabling the SIP ALG
The Session Initiation Protocol (SIP) Application Level Gateway (ALG) is
enabled by default to optimize VoIP phone calls that use the SIP. The
Disable SIP ALG
check box allows you to disable the SIP ALG. Disabling
the SIP ALG might be useful when running certain applications.