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lesson1 - USF Computer Science Department
lesson1 - USF Computer Science Department

... Users often would transfer their data from one computer to another by simply copying it onto a floppy diskette, and then carrying that diskette over to their other computer – located, hopefully, not too far away (e.g., just down the hall) ...
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Distributed firewall

A firewall is a system or group of systems (router, proxy, or gateway) that implements a set of security rules to enforce access control between two networks to protect ""inside"" network from ""outside"" network. It may be a hardware device or a software program running on a secure host computer. In either case, it must have at least two network interfaces, one for the network it is intended to protect, and one for the network it is exposed to. A firewall sits at the junction point or gateway between the two networks, usually a private network and a public network such as the Internet.
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