Wan Setup - NETGEAR DGN2200v1 User Manual

N300 Wireless ADSL2+ Modem Router DGN2200

WAN Setup

Select Advanced > WAN Setup to display the following screen:
The following settings are available:
Disable Port Scan and DoS Protection. The firewall protects your LAN against port
•
scans and denial of service (DoS) attacks. This protection should be disabled only in
special circumstances.
Default DMZ Server. The default demilitarized zone (DMZ) server feature is helpful when
•
you use online games and video conferencing applications that are incompatible with
NAT. See
Default DMZ Server
Respond to Ping on Internet WAN Port. If you want the modem router to respond to a
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ping from the Internet, select this check box. This should be used only as a diagnostic
tool, because it allows your modem router to be discovered. Do not select this check box
unless you have a specific reason to do so.
MTU Size (in bytes). The normal Maximum Transmit Unit (MTU) 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.
NAT Filtering. By default NAT filtering is used.
•
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.
on page 74.
Chapter 7. Advanced Settings | 73