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Ríos-del-Pozo, Rubén Onieva-González, José Antonio López-Muñoz, Francisco Javier 2025-10-09T11:19:53Z 2025-10-09T11:19:53Z 2012 https://hdl.handle.net/10630/40151 10.1007/978-3-642-30436-1_14 Covert channels are a form of hidden communication that may violate the integrity of systems. Since their birth in multilevel security systems in the early 70’s they have evolved considerably, such that new solutions have appeared for computer networks mainly due to vague protocols specifications. We analyze a protocol extensively used today, the Dynamic Host Configuration Protocol (DHCP), in search of new forms of covert communication. From this analysis we observe several features that can be effectively exploited for subliminal data transmission. This results in the implementation of HIDE DHCP, which integrates three covert channels that accommodate to different stealthiness and bandwidth requirements. eng open access Redes de ordenadores - Medidas de seguridad HIDE_DHCP: Covert communications through network configuration messages conference output