Once the purchase is made, follow the instructions to share the Internet connection through the network address
translation (NAT) protocol. Then ensure the firewall is set up to allow only Web and Internet connections outbound and that no inbound connections can be established. Each firewall will have its own set of rules and administration but many products have been simplified to ensure the right type of firewall protection is enabled.
To ensure that all of the internal users are able to adequately share the Internet connection, purchase a single broadband router that has available ports for the computers in use. Set up the Internet connection sharing using the NAT protocol and limit access from the outside world through the built-in firewall features.
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