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Инструкция по эксплуатации Страница: 33

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WNDR4500
Инструкция по эксплуатации Страница: 33

Netgear WNDR4500 — настройка DMZ сервера и MTU на маршрутизаторе для игр [33/132]

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Netgear WNDR4500 [33/132] Default dmz server

NETGEAR genie Advanced Home

N900 Wireless Dual Band Gigabit Router WNDR4500

Default DMZ Server

The default DMZ server feature is helpful when you are using some online games and

videoconferencing applications that are incompatible with Network Address Translation

(NAT). The router is programmed to recognize some of these applications and to work

correctly with them, but there are other applications that might not function well. In some

cases, one local computer can run the application correctly if that computer’s IP address is

entered as the default DMZ server.

WARNING:

DMZ servers pose a security risk. A computer designated as the

default DMZ server loses much of the protection of the firewall

and is exposed to exploits from the Internet. If compromised, the

DMZ server computer can be used to attack other computers on

your network.

Incoming traffic from the Internet is usually discarded by the router unless the traffic is a

response to one of your local computers or a service that you have configured in the Port

Forwarding/Port Triggering 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 set up a default DMZ server:

1. On the

WAN Setup screen, select the Default DMZ Server check box.

2. T

ype the IP address.

3. Click App

ly.

Change the MTU Size

The Maximum Transmission Unit (MTU) is the largest data packet a network device

transmits. When one network device communicates across the Internet with another, the data

packets travel through many devices along the way. If any device in the data path has a lower

MTU setting than the other devices, the data packets have to be split or “fragmented” to

accommodate the device with the smallest MTU.

The best MTU setting for NETGEAR equipment is of

ten just the default value, and changing

the value might fix one problem but cause another. Leave MTU unchanged unless one of

these situations occurs:

• Y

ou have problems connecting to your ISP or other Internet service, and the technical

support of either the ISP or NETGEAR recommends changing the MTU setting. These

web-based applications might require an MTU change:

- A secu

re website that will not open, or displays only part of a web page

- Y

ahoo email

- MSN port

- America Onlin

e’s DSL service

Netgear WNDR4500 — настройка DMZ сервера и MTU на маршрутизаторе для игр [33/132]

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