Program insertion in real-time IP multicasts

Authenticating real time packet streams and multicasts

In this work we propose a new stream authentication scheme that is suitable for live packet streams distributed over a lossy channel, such as an IP-multicast group. Packets are signed together in a block and the recipient can authenticate this block if the loss rate per block is lower than a certain threshold, which can be chosen based on the characteristic of the communication channel. This sc...

A Total Ordering Scheme for Real-time Multicasts in Can

Real-time communication on IP networks

Introduction Voice over IP (VoIP) has been characterised as the largest change to the telecommunication industry since the introduction of the Global System for Mobile Communication (GSM) 10 years ago. This statement is partly wrong. VoIP could be deployed as an alternative way to provide telephony with very little impact on the user experience. However, VoIP is an element of the transition fro...

Accurate Real-time Identification of IP Hijacking

In this paper, we present novel and practical techniques to accurately detect IP prefix hijacking attacks in real time to facilitate timely mitigation responses. There are strong evidences that IP hijacking is common on today’s Internet. Attackers may hijack victim’s IP address space to perpetrate malicious activities such as spamming and launching DoS attacks without worrying about disclosing ...

EmuNET: A Real-Time IP Network Emulator

With the increasing demand for real-time and multimedia applications over the Internet, performance of new protocols or applications has to be extensively tested before deployment on the Internet. In this paper, we describe the design and implementation of EmuNET, a lightweight, portable, configurable, and extendable network emulator, which can be used to emulate a wide variety of network chara...