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    Ebook Cisco Press IPv6 Security 2009

    By admin | May 30, 2014

    Tagged with:

    Introduction
    Internet Protocol version 6 (IPv6) is the next version of the protocol that is used for communications on
    the Internet. IPv6 is a protocol that has been in existence for many years, but it has not yet replaced
    IPv4. IPv4 has some limitations that were not anticipated when it was first created. Because IPv6 over-
    comes many of these limitations, it is the only viable long-term replacement for IPv4.
    While the migration to IPv6 has started, it is still in its early stages. Many international organizations
    already have IPv6 networks, the U.S. federal organizations are working on their transitions to IPv6, and
    others are contemplating what IPv6 means to them. However, many organizations already have IPv6
    running on their networks and they do not even realize it. Many computer operating systems now
    default to running both IPv4 and IPv6, which could cause security vulnerabilities if one is less secure
    than the other. IPv6 security vulnerabilities currently exist, and as the popularity of the IPv6 protocol
    increases, so do the number of threats.
    When a security officer wants to secure an organization, he must be aware of all potential threats, even if
    this threat is a ten-year-old protocol that represents less than 1 percent of the overall Internet traffic in
    2008. Don’t be blinded by this 1 percent: This figure is doomed to increase in the coming years, and
    chances are good that your network is already exposed to some IPv6 threats. It’s better to be safe than
    sorry.
    Just like the early deployment of many technologies, security is often left to the final stages of imple-
    mentation. Our intent in writing this book is to improve the security of early IPv6 deployments from day
    one. Any organization considering or already in the midst of transitioning to IPv6 does not want to
    deploy a new technology that cannot be secured right from the outset. The transition to IPv6 is inevita-
    ble, and therefore this book can help you understand the threats that exist in IPv6 networks and give you
    ways to protect against them. Therefore, this book gives guidance on how to improve the security of
    IPv6 networks.

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