The Secure Neighbor Discovery (SEND) protocol is a security extension of the

Neighbor Discovery Protocol The Neighbor Discovery Protocol (NDP), or simply Neighbor Discovery (ND), is a protocol of the Internet protocol suite used with Internet Protocol Version 6 (IPv6). It operates at the internet layer of the Internet model, and is responsible for ...

(NDP) in

IPv6 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...

defined in RFC 3971 and updated by RFC 6494. The

(NDP) is responsible in

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 insecureHolding IPv6 Neighbor Discovery to a Higher Standard of Security
community.infoblox.com, 2.10.2015 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 Internet Control Message Protocol version 6 (ICMPv6) is the implementation of the Internet Control Message Protocol (ICMP) for Internet Protocol version 6 (IPv6). ICMPv6 is an integral part of IPv6 and performs error reporting and diagnostic fu ...

packet types used in NDP. SEND was updated to use the

Resource Public Key Infrastructure Resource Public Key Infrastructure (RPKI), also known as Resource Certification, is a specialized public key infrastructure (PKI) framework to support improved security for the Internet's BGP routing infrastructure. RPKI provides a way to connec ...

(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 In cryptography, SHA-1 (Secure Hash Algorithm 1) is a hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest – typically rendered as 40 hexadecimal digits. It was designed by the United States ...

hash algorithm and PKIX certificates and does not provide support for alternative hash algorithms.

Implementations

Cisco IOS 12.4(24)T and newer

Easy-SEND

ipv6-send-cga

Huawei Huawei Technologies Co., Ltd. ("Huawei" sometimes stylized as "HUAWEI"; ; zh, c=华为, p= ) is a Chinese multinational corporationtechnology company in Longgang, Shenzhen, Longgang, Shenzhen, Guangdong. Its main product lines include teleco ...

and

Beijing University of Posts and Telecommunications Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...

NDprotector
Telecom SudParis
Native SeND kernel API

TrustRouter

(discontinued), NTT DoCoMo
WinSEND

References

* * * Internet protocols Cryptographic protocols Link protocols IPv6 {{IPv6

Implementations

See also

References