Desafios de segurança numa transição de IPv4 para IPv6

In this work will be shown the techniques for transition from IPv4 to IPv6 and shown the threats associated with IPv6 and security challenges in the transition from IPv4 to IPv6. According to IANA (Internet Assigned Numbers Authorithy) IPv4 addresses are nearly exhausted, and the transition to IPv6 is the only solution for the continued growth of the Internet. However IPv4 is not compatible with IPv6, but there are still a lot of networks using IPv4 so it is necessary create transitional methods for protocols operating simultaneously until there is the possibility of a complete transition to the IPv6 protocol. The transition must be made in this way so the network can communicate with both IPv4 and IPv6 networks. It is important to realize that this change will not happen overnight and it will be a process that will take some time. Who does not make this change in time, in future probably will have more costs because there will be no time to prepare a transition plan. The transition from IPv4 to IPv6 is a complex process, since it involves a series of changes in the network structure with the use of new IP address and new security threats will emerge beyond those already existing. To make this transition successfully is to choose the most appropriate method of transition for the company or organization, and involving the least impact on the safety level in order to make an effective transition, focusing on IPv6 advantages. As the security issues in IPv6 to IPv4 transition is still under study, there is still much to be explain.