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Does IPv6 tunneling present any problem for firewall in an IPv4 network? Explain your reasoning for...

Does IPv6 tunneling present any problem for firewall in an IPv4 network? Explain your reasoning for this answer

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Answer #1

Yes, it does as explained below.

Fate-sharing: Dual-stack hosts open two attack channels for the miscreant: over IPv4 and over IPv6. As several operating systems have IPv6 enabled by default (for example, Windows Vista, Windows 2008, Mac OS/X and so on), this means that each and every host running those operating systems must be protected against IPv4 and IPv6 attacks. This is also called fate-sharing: a dual-stack host is as secure as its weakest protocol stack is secure... And quite often, the IPv6 stack has either no protection at all (i.e. no personal IPv6 firewall) or a non-configured protection (i.e. the personal firewall is for both IPv4 and IPv6 but the IPv6 side is not configured).

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