Masked DNS is a unique software product which successfully combines basic and advanced DNS functions. Both beginners and experienced system administrators will estimate the ease, the simplicity and the power of Masked DNS at their true worth. And these are not mere words. Masked DNS is really commensurable in power with such DNS servers as BIND. We tested Masked DNS in domain zones with thousands of entries and the peak load of thousands of conversions per minute. And the server withstood it. We implemented the support of the Masked technology and developed a unique Loading balance tool method. Our security system, integrated into a Masked DNS server, allows automatic identification and blocking of hackers` attacks.