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Chapter 12. Home Networking Protocols > Network Address Translation

12.3. Network Address Translation

The NBF-based peer-to-peer home network does not provide the Internet sharing capability. Windows 98 second edition and later versions include an Internet Connection Sharing (ICS) function. Sometimes, it might be more convenient to use a dedicated hardware home router to share a broadband Internet access such as an ADSL or a cable modem without paying for multiple IP addresses. Figure 12.8 shows multiple PCs sharing an ADSL via a home router with a built-in Ethernet hub. Figure 12.9 shows a similar configuration sharing a cable modem among multiple PCs. Figure 12.10 shows multiple PCs sharing a cable modem via a wireless Ethernet access point with built-in home router function. The home router obtains either a fixed or a dynamic IP address from the ISP and assigns dynamic internal IP addresses for sharing PCs. The home router can usually be configured (e.g., by entering a fixed IP address) via a Web page accessible through a connected PC.

Figure 12.8. Ethernet Home Networking to Share an ADSL



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