Respond To Ping On Internet Port; Mtu Size (In Bytes) - NETGEAR DGND3800B User Manual

N600 Wireless Dual Band Gigabit VDSL2 Modem Router DGND3800B
For security reasons, you should avoid using the default DMZ server
Note:
feature. When a computer is designated as the default DMZ server,
it loses much of the protection of the firewall and is exposed to many
exploits from the Internet. If compromised, the computer can be
used to attack your network.
Incoming traffic from the Internet is usually discarded by the modem router unless the traffic
is a response to one of your local computers or a service that you have configured in the
Ports screen. Instead of discarding this traffic, you can have it forwarded to one computer on
your network. This computer is called the default DMZ server.

To assign a computer or server to be a default DMZ server:
In the WAN Setup screen, select the Default DMZ Server check box.
1.
Type the IP address for that server and click Apply.
2.

Respond to Ping on Internet 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, because it allows your modem router to be
discovered, which can be a security problem. Do not select this check box unless you have a
specific reason to do so.

MTU Size (in bytes)

The normal maximum transmission unit (MTU) value for most Ethernet networks is 1500
bytes, 1492 bytes for PPPoE connections, and 1458 for PPPoA 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.
Advanced Settings
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