'Internet Connection Sharing' (ICS) is the name given by Microsoft to a feature in recent versions of its
Windows operating system (as of Windows 98 Second Edition) for sharing a single
Internet connection on one computer between other computers on the same
local area network. It makes use of
DHCP and
Network address translation (NAT).
On the host computer the shared connection made available to other computers by enabling ICS in
Network Connections, and other computers that will connect to and use the shared connection.
ICS offers configuration for other standard services and some configuration of NAT.
Criticism
However, while ICS makes use of DHCP, there is no way to review
DHCP leases using ICS. The service is also not customizable in terms of which addresses are used for the internal subnet, and contains no provisions for bandwidth limiting or other features common to more advanced systems, that can be also combined with
Wi-Fi and
dial-up mobile modems.
The server will always have the IP address 192.168.0.1 and will provide NAT services to the whole 192.168.0.x subnet, even if the address on the client was set manually, not by the DHCP server.
See also
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Dial-up access
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Firewall
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Modem
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Network address translation
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Proxy Server
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Router
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Wi-Fi and
Wireless LAN
External links
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Annoyances.org - Setting up Internet Connection Sharing
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Microsoft.com - Description of Internet Connection Sharing
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Microsoft.com - Setting Up Internet Connection Sharing
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Sniperxpx.fu8.com - How to use Internet Connection Sharing between two computers
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How to setup Internet connection sharing screencast