Network security – Is IP telephony helping the cause?

Document Type

Conference Proceeding


School of Computer and Information Science, Edith Cowan University

Place of Publication

Perth, Western Australia


Faculty of Computing, Health and Science


School of Computer and Information Science / Centre for Security Research




Proceedings of 5th Australian Information Security Management Conference, Edith Cowan University, Perth Western Australia, December 4th 2007. Available here


The major players in the Public Branch Exchange (PBX) market are moving rapidly towards the implementation of IP Telephony. What will be the effect on network security overall? Will the push to IP Telephony damage the good work already devoted to security networks? As more doorways open up on our networks there is an increased chance we have opened another unseen vector for hackers and other malicious organisation or individuals to access the data stored on server and users workstations, corrupting that data or destroying it. Is it better from a security perspective to have IP telephony only between PBX equipment – a significant saving in itself or is it imperative that an organisation have IP telephony to the desktop? Is there any real difference, once IP Telephony is past the network boundary does it matter if it also appears at the desktop? What about the future with collaboration and unified collaboration? This paper will discuss a number of implementations and attempt to understand the pros and cons of each. No one solution is going to fit all networks but hopefully this paper will be able to increase our understanding of the dangers and therefore allow for the development of robust solutions.



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Link to publisher version (DOI)