In current CDMA2000 standard, a Packet Data Serving Node (PDSN) acts as an IP gateway to the Internet. Mobile Nodes (MN) connect to a PDSN using a Point-to-Point (PPP) session and...
Mobile devices offer the opportunity to play games nearly everywhere. Moreover, networked games allow individual players to interact with other people and to participate in a large...
Amjad Akkawi, Sibylle Schaller, Oliver Wellnitz, L...
The IP Multimedia Subsystem (IMS) is envisioned as the solution for the next generation multimedia rich communication. Based on an open IP infrastructure, it enables convergence o...
SIP appears to be a powerful and useful signaling protocol supporting mobility for wireless IP networks but it has inherent weaknesses and dangers. This paper is a study on the se...
This paper recounts some lessons that we learned from the deployment of host-to-host IPsec in a large corporate network. Several security issues arise from mismatches between the d...