Patent Number: 7,827,313

Title: Addressing method and method and apparatus for establishing host identity protocol (HIP) connections between legacy and HIP nodes

Abstract: A method is provided of at least partially securing communications, via a HIP proxy (16), between a first host (12) which is not HIP enabled and a second host (14) which is HIP enabled, the method comprising: sending (A) a query from the first host (12) to resolve the IP address of the second host (14); in response to said query, retrieving (B, C) an IP address (IP.sub.fa) and HIT (HIT.sub.hip) associated with the second host (14), returning (E) from the proxy (16) a substitute IP address (IP.sub.res) associated with the second host (14), and maintaining (D) at the proxy (16) a mapping between the substitute IP address (IP.sub.res), the retrieved IP address (IP.sub.fa) and the retrieved HIT (HIT.sub.hip); and upon receipt (F) of a session initiation message (TCP SYN) at the proxy (16) from the first host (12) including as its destination address the substitute IP address (IP.sub.res), using the mapping to negotiate a secure HIP connection (22) between the proxy (16) and the second host (14).

Inventors: Salmela; Patrik (Kirkkonummi, FI), Wall; Jorma (Espoo, FI), Jokela; Petri (Espoo, FI)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

International Classification: G06F 15/16 (20060101); H04L 9/32 (20060101); H04B 1/26 (20060101)

Expiration Date: 2019-11-02 0:00:00