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We propose XPROB, a generalized pool-based anonymous communication framework. XPROB defines a family of infinite pool-based anonymous communication systems with resistance against global active adversary (adversary with all capabilities to monitor all external activities of system, to delay and to create messages in the system). Our proposal is to solve the limitation of APROB Channel that concerns...
We investigate the achievable throughput regions for scenarios involving prioritized transmissions. Prioritized transmissions are useful in many multimedia networking applications where the transmitted data have an inherent hierarchy such that a piece of data at one level is only useful if all the pieces of data at all the lower levels are present. Formally, the prioritized transmission refers to...
We identify a new type of stateful IDS evasion, named signature evasion. We formalize the signature evasion on those Stateful IDSs whose state can be modeled using Deterministic Finite State Automata (DFAs). We develop an efficient algorithm which operates on rule set DFAs and derives a minimal rectification of evasive paths. Finally, we evaluate our solution on Snort signatures, identify and rectify...
A major threat to data networks is based on the fact that some traffic can be expensive to classify and filter as it will undergo a longer than average list of filtering rules before being rejected by the default deny rule. An attacker with some information about the access-control list (ACL) deployed at a firewall or an intrusion detection and prevention system (IDS/IPS) can craft packets that will...
Keyword queries enjoy widespread usage as they represent an intuitive way of specifying information needs. Recently, answering keyword queries on graph-structured data has emerged as an important research topic. The prevalent approaches build on dedicated indexing techniques as well as search algorithms aiming at finding substructures that connect the data elements matching the keywords. In this paper,...
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