Dale LiuDale Liu, (MCSE Security, CISSP, MCT, IAM/IEM, CCNA) has been working in the computer and networking field for over 20 years. Dale's experience ranges from programming to networking to information security and project management. He currently teachesnetworking, routing and security classes, while working in the field performing security audits and infrastructure design for medium to large companies. Read More Read Less
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