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Application level traffic classification has been addressed in demonstrated recently based on statistical features of packet flows. Among the most significant characteristics is packet length. Even ciphered flows leak information about their content through the sequence of packet length values. There are obvious ways to destroy such side information, e.g. by setting all packet at maximum allowed length...
Identifying application types in network traffic is a difficult problem for administrators who must secure and manage network resources, further complicated by the use of encrypted protocols and nonstandard port numbers. This paper takes a unique approach to this problem by modeling and analyzing application graphs, structures which describe the application-level (e.g., HTTP, FTP) communications between...
This paper evaluates security issues of the recently designed and implemented next generation protocol UDTv4 and offers two contributions to this area of research. Firstly, since UDT is a relatively new protocol, its security requirements have not been considered and explored. An examination investigating its security requirements in implementation is performed. The objective is to achieve a wide...
In order to effectively manage network resources and to serve different traffic needs, several works have been done in the QoS area. Basically, ldquomulti-field (MF) packet classifiersrdquo classify a packet by looking for multiple fields of the IP/TCP headers, recognize which flow the packet belongs to, and according to this information, provide service differentiation in IP networks. However, for...
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