• Source: Secure Neighbor Discovery

The Secure Neighbor Discovery (SEND) protocol is a security extension of the Neighbor Discovery Protocol (NDP) in IPv6 defined in RFC 3971 and updated by RFC 6494.
The Neighbor Discovery Protocol (NDP) is responsible in IPv6 for discovery of other network nodes on the local link, to determine the link layer addresses of other nodes, and to find available routers, and maintain reachability information about the paths to other active neighbor nodes (RFC 4861). NDP is insecure and susceptible to malicious interference. It is the intent of SEND to provide an alternate mechanism for securing NDP with a cryptographic method that is independent of IPsec, the original and inherent method of securing IPv6 communications.
SEND uses Cryptographically Generated Addresses (CGA) and other new NDP options for the ICMPv6 packet types used in NDP.
SEND was updated to use the Resource Public Key Infrastructure (RPKI) by RFC 6494 and RFC 6495 which define use of a SEND Certificate Profile utilizing a modified RFC 6487 RPKI Certificate Profile which must include a single RFC 3779 IP Address Delegation extension.
There have been concerns with algorithm agility vis-à-vis attacks on hash functions used by SEND expressed in RFC 6273, as CGA currently uses the SHA-1 hash algorithm and PKIX certificates and does not provide support for alternative hash algorithms.




Implementations


Cisco IOS 12.4(24)T and newer
Docomo USL SEND fork
Easy-SEND
ipv6-send-cga, Huawei and Beijing University of Posts and Telecommunications
NDprotector, Telecom SudParis
Native SeND kernel API
TrustRouter
USL SEND (discontinued), NTT DoCoMo
WinSEND




See also


Neighbor Discovery Protocol




References

Kata Kunci Pencarian:

• Secure Neighbor Discovery Protocol
• Neighbor Discovery Protocol
• Cryptographically Generated Address
• CGA
• IPv6
• Secure Neighbor Discovery
• Neighbor Discovery Protocol
• Resource Public Key Infrastructure
• ICMPv6
• Send (disambiguation)
• Cryptographically Generated Address
• Address Resolution Protocol
• IPv6 packet
• NTT Docomo USA
• IPv6