Description and Experience of the Clinical Testbeds

This deliverable describes the up-to-date technical environment at three clinical testbed demonstrator sites of the 6WINIT Project, including the adapted clinical applications, project components and network transition technologies in use at these sites after 18 months of the Project. It also provides an interim description of early experiences with deployment and usage of these applications, components and technologies, and their clinical service impact

lPv6 Transition: Why A New Security Mechanisms Model Is Necessary.

This paper describes the scenario in the transition oflpv4 to lpv6 with focusing on the security issues involved in each of the transition methods: dual stack and tunneling. Then, the paper analyze the existing security mechanisms available and identify new considerations for a new security model

Design Aspects of a Testbed for an IPv6-Based Future Network for Aeronautical Safety and Non-Safety Communication

Mineralogy & gem

IPv6-Only Network Design and Deployment at IITH

The aim of thesis is for deploying an IPv6 only daily base enterprise network in IITH and making it fully functional for the daily use and address some of the key current challenges. The motivation for deploying IPv6 only network in the campus is due to the depletion of IPv4 address space. The IPv4 address space is only 32 bits, therefore has 232 addresses whereas IPv6 addresses are represented by 128 bits thereby its address space consists of 2128 addresses which is quite enough to address all the particles in the world with an IP address. Because of this scarcity of IPv4 addresses, many public organizations implemented NAT (Network Address Translation) to map private IPv4 addresses to a single public IPv4 addresses. So like this way NAT helped in dealing with the problem of IPv4 address scarcity. But NAT has got many disadvantages such as NAT adds complexities and it has basic disconnectivity problem with IPv6 only enabled devices. Also NAT has many security issues such as it is not compatible with IPSec protocol. Morover NAT was meant to be just a temporary solution for IPv4 exhaustion. So came the IPv6 address which contains enough IPv6 addresses to address all the devices. But the problem is both IPv4 and IPv6 are not compatible and during initial phase of IPv6 deployment IPv4 and IPv6 coexist together.So there has to be some mechanism to translate IPv4 to IPv6 and vice versa

Investigation into performance of IPV4 and IPV6 transition mechanisms and distributed NAT-PT implementation

Master'sMASTER OF SCIENC

Mobile IP Address Efficiency

In future wireless networks, Mobile IP will be widely deployed as a general mobility protocol. Currently, in the protocol each mobile node (MN) should have one public home address to identify itself when it is away from home. Unlike the stationary host, the MN cannot simply use private addresses when NAT (Network Address Translation) is enabled. How to assign public addresses among mobile nodes is important to save the already limited IPv4 addresses. Even though Mobile IPv6 can provide a large address space, when communicating with IPv4 based hosts, the MN still needs to use one public IPv4 address. Protocol translation can map between IPv6 and IPv4 addresses; however, it is a NAT-based approach and breaks end-to end communications. From a new perspective, we propose an address-sharing mechanism that allows a large number of MNs to share only one IPv4 public address while avoiding most of the drawbacks of NAT

Performance Analysis of Three Transition Mechanisms between IPv6 Network and IPv4 Network: Dual Stack, Tunneling and Translation

Due to the increasing demand of the Internet, we are facing a great problem of the depletion of our existing IPv4 (Internet Protocol version 4) network. To solve the situation, we have to use IP version 6 in coming years. But the IPv4 network will not be opt out, but also coexist with IPv6 network. For the transition from IPv4 to IPv6 and vice versa, there are three prominent transition mechanisms are used. They are Dual Stack, Tunneling and Translation. In this paper, the performances of these three mechanisms have been analyzed. IPv6 header format, its security and the routing also have been focused. For the simulation Packet Tracer simulation software has been used