Network Address Translation (NAT) by using ICS

With network address translation in Windows 2000, you can configure your home network or small office network to share a single connection to the Internet.

Notice:
The private ip address of the ICS server should be 192.168.0.1 for this service. If you can not change the ip address of the ICS host, use [Routing and Remote Access] service.

Sample Network

Server Information

Network Address	192.168.0.0
Subnet Mask	255.255.255.0
Server IP Address	192.168.0.1
Default Gateway	192.168.0.1

Enable NAT (Network Address Translator)

Open [Network and Dial-up Connections] window, select [Dial-up Connection] and Click [Properties]

Click [Sharing] tab, check [Enable Internet Connection Sharing for this connection]. If you need, check [Enable on-demand dialing] and click [OK]. The server should have a fixed ip address as 192.168.0.1 for the service

Confirmation

Double click [Dial-up Connection] and connect to ISP.
Open Command Prompt on the server and type [ipconfig /all]

Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\>ipconfig /all

Windows 2000 IP Configuration

        Host Name . . . . . . . . . . . . : hoge-server
        Primary DNS Suffix  . . . . . . . : hoge.edu.bt
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : Yes
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : hoge.edu.bt
                                            edu.bt

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Realtek RTL8139(A) PCI Fast Ethernet
 Adapter
        Physical Address. . . . . . . . . : 00-90-CC-07-77-FD
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.0.1
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.0.1
        DNS Servers . . . . . . . . . . . : 192.168.0.1
        Primary WINS Server . . . . . . . : 192.168.0.1

PPP adapter Dial-up Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
        Physical Address. . . . . . . . . : 00-53-45-00-00-00
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 202.144.129.203
        Subnet Mask . . . . . . . . . . . : 255.255.255.255
        Default Gateway . . . . . . . . . : 202.144.129.203
        DNS Servers . . . . . . . . . . . : 202.144.129.34
                                            202.144.128.200

Open Command Prompt on Client and check connection

C:\>ping www.yahoo.com

Pinging www.yahoo.akadns.net [64.58.76.177] with 32 bytes of data:

Reply from 64.58.76.177: bytes=32 time=971ms TTL=242
Reply from 64.58.76.177: bytes=32 time=952ms TTL=242
Reply from 64.58.76.177: bytes=32 time=951ms TTL=242
Reply from 64.58.76.177: bytes=32 time=951ms TTL=242

Ping statistics for 64.58.76.177:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 951ms, Maximum =  971ms, Average =  956ms

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