Covert channel tool hides data in IPv6
An independent security researcher showed off an early version of a tool for creating covert channels that, he claims, can pass undetected through most firewalls and intrusion detection systems. The tool, dubbed VoodooNet or v00d00n3t, uses the ability of most computers to encapsulate next-generation network traffic, known as Internet Protocol version 6 (IPv6), inside of today's network communications standard, or IPv4.
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