2011 | OriginalPaper | Chapter
Secure Network Steganographic Scheme Exploiting TCP Sequence Numbers
Authors : Vengala Satish Kumar, Tanima Dutta, Arijit Sur, Sukumar Nandi
Published in: Advances in Network Security and Applications
Publisher: Springer Berlin Heidelberg
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Network steganography is a relatively new area of research. Various network steganographic schemes that modifies the header of protocols like TCP and IP are present in literature. An observation suggests that packet length based schemes are suitable for transferring secret information across the network. This paper attempts to propose a novel steganographic scheme which uses the length of the TCP segments to transfer secret information. This scheme embeds the secret information in the TCP sequence number by adjusting the payload of TCP segments. Experiments and results show that this scheme is better than other existing schemes based on adjusting the length of packets.