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1. Network-Covert-Channels-A-University-level-Course Public

   This is a free online class on network information hiding/steganography/covert channels that I teach at the FernUniversität in Hagen, Germany, and HS Worms, Germany.

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2. WendzelNNTPd Public

   The WendzelNNTPd is an IPv6-ready Usenet-server (NNTP daemon) with the main goal of a high usability. It is portable (Linux/*BSD/*nix), supports AUTHINFO authentication, contains ACL as well as rol…

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3. CCEAP Public

   The Covert Channel Educational Analysis Protocol (CCEAP) is a network protocol designed for teaching covert channels to professionals and students in higher education. It is also an easy-to-use cov…

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4. NetworkCovertChannels Public

   Some network covert channel projects of my own research, containing a protocol channel tool (protocol switching covert channel, PCT/PSCC), a protocol hopping covert channel (PHCC) tool, the protoco…

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5. NELphase Public

   Network Environment Learning (NEL) Phase for Covert Channels (with a Feedback Channel)

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6. OpenBSDhacks Public

   Some of my security-related coding projects for OpenBSD: A kernel-based user-profile intrusion detection system (FUPIDS) and an ICMP-based "port-knocking" service (openportd).

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