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RangeMax Dual Band Wireless-N Modem Router DGND3300 User Manual
Customizing Your Network Settings 6-10
v1.0, January 2010
Default DMZ Server This feature is sometimes helpful when you are using some online games and
videoconferencing. Be careful when using this feature because it makes the
firewall security less effective. See the following section, Configuring Static
Routes.
Respond to Ping on Internet
WAN Port
If you want the modem router to respond to a ping from the Internet, select this
check box. This should be used only as a diagnostic tool, since 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 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. This is rarely required, and should not be done
unless you are sure it is necessary for your ISP connection. See “Changing
the MTU Size” on page 7-8.
Disable 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.
Table 6-2. WAN Setup Settings
Setting Description