<p>Today, the most frequently used signaling system for telecommunication is called Signaling</p><p>System No. 7 (SS7). The growing usage of mobile telephones and mobile data communication,</p><p>and the development of new services mean that the risk of intrusion and exploitation of</p><p>the SS7 signaling networks increases. The increasing problem with unauthorized access to</p><p>sensitive information and the operators’ growing demand for security is the origin of our</p><p>work. This thesis presents a prototype design and implementation of a Security Gateway</p><p>(SEG), which is a fundamental part of the TCAP user security (TCAPsec) concept. TCAPsec</p><p>is a security concept for introducing security mechanisms to the signaling system. The prototype</p><p>includes three different protection modes that provide security services, ranging from</p><p>almost no protection to full protection with the use of encryption algorithms. The thesis also</p><p>contains an evaluation study of the delay penalties caused by the use of these security services.</p><p>With regards to the restrictions on the prototype, the conclusion drawn from the evaluation</p><p>results was that the protection mechanisms in the different protection modes did not inflict</p><p>any significant time penalties. Instead, the results of the study indicate that the routing process</p><p>of messages in the network is a more significant delaying part in the communication between</p><p>different nodes. This result implies that the routing process takes longer time than the security</p><p>services. The thesis also presents a number of discovered features that will require further</p><p>investigation and development before the TCAPsec concept can be realized.</p>
| Identifer | oai:union.ndltd.org:UPSALLA/oai:DiVA.org:kau-2221 |
| Date | January 2008 |
| Creators | Chung, Kang |
| Publisher | Karlstad University, Faculty of Economic Sciences, Communication and IT |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, text |
Page generated in 0.0018 seconds