cauhinh nat kha chi tiet.doc

8/12/2019 cauhinh nat kha chi tiet.doc

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Network Address Translation (NAT) Server:

Nat us an Internet Protocol (IP) translation process that allows a network with private addresses toaccess information on the Internet. If the NAT routing protocol is installed and configured on a server

that runs Routing and Remote Access, internal network clients with private Internet Protocol (IP)

addresses can access the Internet through the eternal interface of the NAT server. This is much like of

a pro! server "ut it does not have an! cache.

To configure server 2003 as a NAT server

#ollow these steps to accomplish the task

$. %n the Administrative Tools menu, click Routing and Remote Access.


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&. In the Routing and Remote Access, epand !ourserver_name(whereserver_name is the

name of the server that !ou want to configure) and then epand I Routingin the left pane.


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'.

Rightclick eneral and then click New Routing rotocol.

*. +lick to select the NAT!"asic #irewallcheck "o and then click $%.


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. Rightclick NAT-asic #irewall in the left pane and then click New Interface.

/. +lick the interface that represents !our internal network interface and then click $%.


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0. In the Network Address Translation properties, click rivate interface connected to &rivate

networkand then click $%.


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1. Rightclick NAT-asic #irewall in the left pane and then click New Interface.

2. +lick the interface that represents !our eternal network interface and then click $%.


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$3. In Network Address Translation properties, click u'lic interface connected to te

Internet. #or a dialup connection to the Internet, select the demanddial interface that is

configured to connect to !our I4P. +lick to select the na'le NAT on tis interface check "o

and then click %5.

The NAT server can automaticall! assign IP addresses to internal network clients. 6ou ma! want to

use this functionalit! if !ou do not have a 78+P server that is alread! assigning addressing

information to clients on the internal network.


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To *onfigure NAT Server to Assign I Addresses and erform ro+, -NS .ueries

#ollow these steps in order to accomplish the task

$. Rightclick NAT-asic #irewall in the left pane and then click ro&erties.

&. +lick the Address Assignment ta" and then click to select the Automaticall, assign Iaddresses ', using te -/* allocatorcheck "o.

'. In the I address"o, t!pe a network I7.

*. In the ask"o, t!pe a su"net mask.

. 6ou can also eclude IP addresses from the range !ou are defining so that the ecluded IPaddresses can "e assigned to specific computers on the private network "! clicking +cludeand

adding IP addresses.


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/. +lick the Name Resolution ta" and then click to select the *lients using -omain NameS,stem (-NS)check "o.

0. If !ou use a demanddial interface to connect to the Internet, click to select the *onnect to

te &u'lic network wen a name needs to 'e resolvedcheck "o.

1. In the 7emanddial interface "o, click the interface to dial.

2. +lick A&&l,and then click $%.


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To *onfigure a 1indows Server 2003"ased *om&uter to se a NAT Server

#ollow these steps in order to accomplish the task

$. %pen Network +onnections, right click 4ocal Area *onnectionand click ro&erties.


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&. +lick Internet rotocol (T*!I) and +lick ro&erties.

'. In the -efault gatewa,"o, t!pe the internal IP address of the NAT server and !our IP

address with 9ask.

*. +lick $%, click $%, and then click *lose.


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cauhinh nat kha chi tiet.doc

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