A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Open Shortest Path First IGP Working Group of the IETF. Title : Security Extension for OSPFv2 when using Manual Key Management Author(s) : Manav Bhatia Sam Hartman Dacheng Zhang Acee Lindem Filename : draft-ietf-ospf-security-extension-manual-keying-00.txt Pages : 11 Date : 2011-05-06 The current OSPFv2 cryptographic authentication mechanism as defined in the OSPF standards is vulnerable to both inter-session and intra- session replay attacks when its uses manual keying. Additionally, the existing cryptographic authentication schemes do not cover the IP header. This omission can be exploited to carry out various types of attacks. This draft proposes changes to the authentication sequence number mechanism that will protect OSPFv2 from both inter-session and intra- session replay attacks when its using manual keys for securing its protocol packets. Additionally, we also describe some changes in the cryptographic hash computation so that we eliminate most attacks that result because OSPFv2 does not protect the IP header. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-ospf-security-extension-manual-keying-00.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-ietf-ospf-security-extension-manual-keying-00.txt _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt