Netgear JNR3000 - Wireless-N 300 Gigabit Wireless Broadband Router 사용자 설명서
Genie Advanced Home
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N300 Wireless Gigabit Router JNR3000
WAN Setup
The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the
Maximum Transmit Unit (MTU) size, and enable the router to respond to a ping on the WAN
(Internet) port. Select Advanced > Setup > WAN Setup to view the following screen:
Maximum Transmit Unit (MTU) size, and enable the router to respond to a ping on the WAN
(Internet) port. Select Advanced > Setup > WAN Setup to view the following screen:
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Disable Port Scan and DoS Protection. DoS protection protects your LAN against
denial of service attacks such as Syn flood, Smurf Attack, Ping of Death, Teardrop Attack,
UDP Flood, ARP Attack, Spoofing ICMP, Null Scan, and many others. This option should
be disabled only in special circumstances.
UDP Flood, ARP Attack, Spoofing ICMP, Null Scan, and many others. This option should
be disabled only in special circumstances.
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Default DMZ Server. This feature is sometimes helpful when you are playing online
games or videoconferencing. Be careful when using this feature because it makes the
firewall security less effective. See the following section,
firewall security less effective. See the following section,
, for more
details.
•
Respond to Ping on Internet Port. If you want the router to respond to a ping from the
Internet, select this check box. Use this option only as a diagnostic tool because it allows
your router to be discovered. Do not select this check box unless you have a specific
reason.
your router to be discovered. Do not select this check box unless you have a specific
reason.
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Disable IGMP Proxying. IGMP proxying allows a computer on the local area network
(LAN) to receive the multicast traffic it is interested in from the Internet. You can select
this check box to disable the feature if you do not need it.
this check box to disable the feature if you do not need it.
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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
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
•
NAT Filtering. Network Address Translation (NAT) determines how the router processes
inbound traffic. Secured NAT provides a secured firewall to protect the computers on the
LAN from attacks from the Internet, but might prevent some Internet games,
point-to-point applications, or multimedia applications from functioning. Open NAT
LAN from attacks from the Internet, but might prevent some Internet games,
point-to-point applications, or multimedia applications from functioning. Open NAT