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Internet Connection Sharing (ICS) is a Microsoft Operating System (OS) service that enables sharing an Internet connection for one or more users and computers through a dialup modem or local area network (LAN).
ICS facilitates Internet access between multiple computers in a single location. It is helpful in office or home environments where more than one computer is configured for Internet use via one Internet service provider (ISP) line.
On the backend, ICS has one phone or broadband Internet line to enable Web browsing at equal data speeds. For example, one user may send emails, while another download music files.
The following are key ICS network features: