But it doesn't have to be this way. According to Peter Tippett, CTO of the newly-formed security company Cybertrust (formed from TruSecure, BeTrusted and Ubizen), you're better off looking for good solutions instead of perfect answers. "A few solutions that are only 80 percent effective give an overall 99.9 percent solution," Tippett says. In fact, he says that the most effective security solutions require little time and less expense, and can reduce your exposure 40-fold.
The most effective solution, he said, is to simply set your routers to what he calls "default deny." By this he means that your routers should be set so that all traffic from outside your network is denied entry or exit, except for traffic that's specifically allowed. How do you know what traffic to allow? Tippett suggests checking your router logs. You'll see over the course of a couple of days what traffic leaves your network, where it goes and where it comes from. The same is true for incoming traffic.
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