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Posts Tagged ‘intermediate nodes’

There are a lot of similarities between IPv4 and IPv6. There are also a lot of differences, including some differences that may have security implications for network engineers who deploy IPv6. In this blog posting, I will discuss IPv6 extension headers and why network and security engineers may want to pay closer attention to them. […]

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25
Jul
2011

Fragmentation has been a frequent source of security vulnerabilities in IPv4, and for good reason. With fragmented IPv4 packets, the layer 4 header information is not available in the second through the last fragment. The process of fragmentation and fragment reassembly can create unexpected and harmful behaviors in intermediate nodes (such as firewalls and routers) […]

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