Your job is to defend x company from a hacker. A hacker is using vpn and proxy servers to keep him anonymously. you notice a small amount of unusual traffic in your network. what would be the next steps you'd take to stop the hacker from gaining more access in to your network.

How can you be sure that every computer in an IPsec network uses its own private key pair?

What security characteristics do you anticipate from a secure email system, as well as the machines that execute it? Which protocol layer is best for a security service like this? Make a distinction in your response between services that seek to provide anonymity and those that don't?

You've discovered a security breach involving unauthorized access to sensitive customer data stored on your company's network. You have no idea whether the attack came from inside or beyond. When monitoring your network traffic, the following aspects should be kept in mind:Provide an outline of what sort of traffic you'll be looking at in order to figure out where and when the attack took place.