An exploration of the Intenet Key Exchange (IKE) version 1, IKE version 2, and the different modes in which it operates, aggressive, main and quick.
RFC2408 "Internet Security Association and Key Management Protocol (ISAKMP)"
RFC2409 "The Internet Key Exchange (IKE)"
RFC4306 "Internet Key Exchange (IKEv2) Protocol"
RFC5996 "Internet Key Exchange Protocol Version 2 (IKEv2)"
RFC5996 "Internet Key Exchange Protocol Version 2 (IKEv2)"
RFC2401 "Security Architecture for the Internet Protocol"
Internet Key Exchange (IKE) Attributes
"Magic Numbers" for ISAKMP Protocol
Internet Key Exchange Version 2 (IKEv2) Parameters
ike-scan "Ike Scan: IPSec VPN scanning, fingerprinting and testing tool."
John the Ripper "John the Ripper password cracker."
strongSwan "the OpenSource IPsec-based VPN Solution"
IKECrack "open source IKE/IPSec authentication crack tool"
comp.dcomp.vpn, post by Bevan, Stephen J. "Re: Proxy ID and RFC"
http://www.sersc.org/journals/IJAST/vol8/2.pdf "paper by http://www.sersc.org/journals/IJAST/vol8/2.pdf"
http://www.sersc.org/journals/IJAST/vol8/2.pdf "paper by http://www.sersc.org/journals/IJAST/vol8/2.pdf"
PSK Cracking using IKE Aggressive Mode "paper by Michael Thumann, mthumann@ernw.de and Enno Rey, erey@ernw.de"