Computer Science – Cryptography and Security
Scientific paper
2010-02-23
Computer Science
Cryptography and Security
17 pages, 12 figures
Scientific paper
Voice over IP (VoIP) is unquestionably the most popular real-time service in IP networks today. Recent studies have shown that it is also a suitable carrier for information hiding. Hidden communication may pose security concerns as it can lead to confidential information leakage. In VoIP, RTP (Real-time Transport Protocol) in particular, which provides the means for the successful transport of voice packets through IP networks, is suitable for steganographic purposes. It is characterised by a high packet rate compared to other protocols used in IP telephony, resulting in a potentially high steganographic bandwidth. The modification of an RTP packet stream provides many opportunities for hidden communication as the packets may be delayed, reordered or intentionally lost. In this paper, to enable the detection of steganographic exchanges in VoIP, we examined real RTP traffic traces to answer the questions, what do the "normal" delays in RTP packet streams look like? and, is it possible to detect the use of known RTP steganographic methods based on this knowledge?
Cabaj Krzysztof
Mazurczyk Wojciech
Szczypiorski Krzysztof
No associations
LandOfFree
What are suspicious VoIP delays? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with What are suspicious VoIP delays?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and What are suspicious VoIP delays? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-170038