ICS (Internet Connection Sharing)
It is default feature
of Windows 98 IInd
edition and higher versions and can be use in workgroup also.
It is use to share
Internet connection, it is slow, it use dialup connection, it can be use for
small network, we cannot use DHCP server and maximum 253 clients are possible
because Network ID is always 192.168.0.0
Nowadays, we can use
any network ID.
NAT (Network Address Translation)
It is use to share
Internet connection, it is mostly configure on Router but we can also configure
on Windows server. It can also be use in the workgroup network. It is lease
line connection, it is faster, we can use any network ID, we can use DHCP
server, no limit for the number of clients and it can be use in very large
network. It is use to manage IP addressing , to save IP address etc.
We need 2 NICs in NAT
server.
Proxy
Server
It is a software use
to share Internet connection and for Internet security. It can be install on
client OS also in the workgroup network or domain network. We can apply GPO for automatic configuration
in the client machine for the domain network.
Proxy server can check
the websites which are browse in our network and we can also block particular
URLs.
Example :- ccproxy, WinGate, Win Proxy, Web Proxy,
WebSense, MS-Proxy etc.
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