Download e-book for kindle: PBX Security and Forensics: A Practical Approach by Iosif I. Androulidakis

By Iosif I. Androulidakis

ISBN-10: 1461416558

ISBN-13: 9781461416555

ISBN-10: 1461416566

ISBN-13: 9781461416562

PBX defense and Forensics offers readers with theoretical and useful historical past for personal department Exchanges (PBXs). PBX is privately owned apparatus that serve the communique wishes of a personal or public entity making connections between inner phones and linking them to different clients within the Public Switched mobile community (PSTN). certain damages and assaults in PBXs may cause major instability and difficulties. the writer offers examples of those threats and the way to avoid opposed to such assaults sooner or later. Readers can be proven the place to discover forensics information and the way to behavior appropriate analysis.

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Additional info for PBX Security and Forensics: A Practical Approach

Example text

As already stated, there is extensive complexity and significant systems interaction. It is therefore logical that a thorough testing of all possible scenarios and parameters that can lead to vulnerabilities is a process that cannot be applied with absolute success. As an example, let us consider a bug affecting a long chain of forwards. Set A is forwarding to set B, B to C, C to D, and so on. Due to that hypothetical bug, if that long chain of forwards gets back to set A, after having passed through ten different numbers, the system could crash.

2, and various boards are inserted in slots, each board performing a specific action. 9 depicts the back side of this chassis. 28 3 PBX Technical Details Fig. 6 Large company main distribution frame There is the CPU board, boards to serve analog phones, digital phones, trunk lines, and so on. It must be noted that in PBX terms, there is some sort of “spatial– geographical” discrimination. Each rack, shelf, board, and connection of the board has a number. 10 shows a listing of boards, as returned from the respective command issued in the management console of the PBX.

The interesting point that must be noted here is 44 3 PBX Technical Details the possibility of non-predicted feature interaction and the presence of software errors and bugs [4]. As already stated, there is extensive complexity and significant systems interaction. It is therefore logical that a thorough testing of all possible scenarios and parameters that can lead to vulnerabilities is a process that cannot be applied with absolute success. As an example, let us consider a bug affecting a long chain of forwards.

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PBX Security and Forensics: A Practical Approach by Iosif I. Androulidakis


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