Chien-chung Shen wrote: > I'd apologize in advance if the question had been asked before. > Is there IKE source code publically available for research purposes? > Thanks alot. One is Linux FreeS/WAN: http://www.freeswan.org/ The online docs for it have a list of others: http://www.freeswan.org/freeswan_trees/freeswan-1.5/doc/links.ipsec.html#opensource