Article | REF: TE7506 V1

IPv6 security - Addressing and auto-configuration

Author: Jean-Michel COMBES

Publication date: May 10, 2013

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5. Attacks on the ND protocol

There are 2 categories of vulnerabilities for the NDP mechanism:

  • The first category concerns attacks external to the network link where potential victims are located;

  • The second category is based on attacks inside the network link.

5.1 External attacks

When a router receives an IPv6 packet destined for a node on this subnet, according to the NDP specifications, it must check whether it already has the information concerning the recipient of this IPv6 packet in its Neighbor Cache, so that it can forward it. If this is not the case, it stores the IPv6 packet and applies the ND procedure (§

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Attacks on the ND protocol