SEcure Neighbor Discovery

SEcure Neighbor Discovery (SEND) was proposed to counteract threats to the Neighbor Discovery Protocol (NDP). It is a strong security extension that can make the IPv6 local link very safe. SEND relies on dynamically Cryptographically Generated Addresses (CGAs) and X.509 certificates. However, SEND is not easily deployed and is still vulnerable to some types of attacks. This chapter evaluates the practical considerations of a SEND deployment taking a cryptographic approach as a means of securing the IPv6 local link operations. It reviews the remaining vulnerabilities and gives some recommendations with which to facilitate SEND deployment.