I believe it's FIVE. There is also "externally generated keys entered 'manually' into IPsec", a/k/a out-of-band keying and several other names. In other words, machinery, but machinery discussed outside the scope of this WG. >From: Robert Moskowitz <rgm3@chrysler.com> >There have been 4 KMPs discussed in this workgroup: > >Manual >Photuris >SKIP >ISAKMP/Oakley