Yep. Jack Bauer uses them all the time. Every movie, TV show, novel, and newspaper article talks about them. Apparently, they exist as some magical device that at one time both renders a “server” impenetrable and throws open secret files to terrorists. Depending on the character in our little drama, there seems to always hide some trick or pathway around this “firewall” thing, and the description usually relies on pseudo-technical jargon to explain it away.
My wife and I home school our children using excellent videos from Abeka, and it works out very well. They can travel with me when the opportunity arises, work from the dentist’s waiting room, or whatever. Except for the problem of how to let the kids get to the Internet safely. Well, there’s all kinds of thoughts out there on the subject. Everything from “Don’t” (absolutist) to the school of thought that says “They’re Going to See It Anyway” (defeatist). Then there are the people who say, “My kids would never do anything like that…”