Abstract
The article states the need and importance of the migration from IPv4 to IPv6. All the information that this article contains was obtained from bibliographic research in several books and online papers, just as a survey with the people responsible for some companies’ IT Department, in which we were able to attain a thorough analysis about the migration from IPv4 to IPv6. The currently situation of companies’ systems have been unreasonably unstable with Carrier Grade Network Address Translation - CGNAT, a technique used by internet service providers to share IPv4 public addresses inside private network addresses. Some research indicates that a large amount of IT professionals are suitable to use the IPv6 migration system as well as states that there are several resources and technics for implementation of this new system, however there has to be caution while using dual stacks and tunnels from the more recent system, the IPv6, because some services still are operated by the older system, the IPv4, as long as it continues existing and being used. Nowadays, several internet providers have adopted a new way of using the IPv4 and the IPv6, but the industry lacks business owners or internet managers with the right conscious to obtain the equipment’s that endure the migration to IPv6.
Highlights
According to Kurose and Ross (Redes de computadores e a internet 6o - 2016) the IPv4 Protocol Works as the model TCP/IP which operates a pattern of separated 32 bits: the first and second network are divided in five different classes: A, B, C, D and E
Pursuant to Brito and Henrique (IPv6 O novo protocolo da internet 1o - 2013) the IPV6 approves the most recent one (IPv6) Protocol operates by the same structure as the Ipv4 but uses addresses with 128 bits with hexadecimal notation separated by a network prefix and interface identifier
CGNAT has its particularities such as: the malicious costumer and the well-intentioned costumers that share an IP public address. In this scenario there is a malicious costume currently known as hacker that, for example, executes fraud in banks, but uses a public IP provided by his internet provider without using CGNAT which turns it available for tracking him when armed with judicial order, so the authorities can verify which costumer was using that determined IP
Summary
According to Kurose and Ross (Redes de computadores e a internet 6o - 2016) the IPv4 Protocol Works as the model TCP/IP which operates a pattern of separated 32 bits: the first and second network are divided in five different classes: A, B, C, D and E. Pursuant to Brito and Henrique (IPv6 O novo protocolo da internet 1o - 2013) the IPv6 Protocol operates by the same structure as the Ipv but uses addresses with 128 bits with hexadecimal notation separated by a network prefix and interface identifier This protocol shows improvement on its characteristics of security, performance, management and mobility. The IPv4 scenario is overloaded by many services that are just because innumerous amount of people is currently working from home, by the home office style Another great factor that has to be noticed is that the CGNAT does not operate with a clean version of tracking accesses to a network, which does not help the authorities. The way of the migration from IPv4 protocol to IPv6 have been and it will continue to be discussed so the experts can find a way for the providers can work on the migration without disabling the older protocol
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