Ways to Share a Broadband Internet
Last Updated: 7/24/01
Q. What are the ways to share a broadband (cable
or DSL MODEM) Internet connection?
A. There are few ways to do it. One is to
purchase another IP address from your service provider. Most service
providers charge a monthly fee for additional IPs. The best way is
to purchase a broadband router such as the SMC Barricade (http://duxcw.com/digest/Reviews/Network/smc/smc7004br/smc7004br.htm).
That is what I use. They cost about $100.
The Barricade has serial port for an external dial-up MODEM
and a printer port and printer server. A printer can be connected to the
Barricade and shared by computers on the local network. Not all printers
will work with it. Many routers do not accommodate an Internet connection
via an external dial-up MODEM and do not have printer port and server.
The Barricade can be connected to
hub or switch hub can to expand the network and Internet sharing to more
than the four PCs directly supported by the router.
There are also single port routers on the market, routers
that do not include an Ethernet switch or hub (http://duxcw.com/faq/network/hubsw.htm).
I will review one shortly.
Another way to do it is with a software solution. There
are two flavors: a proxy server and a NAT (Network Address Translator). I
have found that a NAT works best for a small network. Windows 98 Second Edition
(SE) and Millennium (Me) include ICS (Internet Connection Sharing; http://duxcw.com/digest/Howto/network/win98se/intro.htm and http://duxcw.com/digest/Howto/network/win98se_cab/intro.htm).
It works OK for basic browsing and E-Mail functions, but has problems with
some network games and conferencing programs, etc. It requires two network
adapters in the PC connected to the Internet, one to the MODEM and the other
to another PC via a crossover cable or to a hub with a straight-thru cable
as you have now. You would have to buy another adapter and cable.
Of the software I have tested, I have found that SyGate is the best NAT (it can also function as a proxy). The version of SyGate
I reviewed requires two network adapters like Win 98 SE/Me ICS. The newest
version is advertised to work with one network adapter in the host computer
(the one running the NAT).
With a software solution you must have the host computer
on for the other computer(s) (clients) to use the Internet. Most routers
are small boxes running a specialized server that performs both NAT and firewall
functions. With a router, only the router has to be on. The router is also
easier to install, is generally faster, and has fewer problems.