Can you point us to a link that describes the acronym for IWS in more detail?
Is this related to the government's use of Identity Web Services (IWS) which use point-to-point, IPSec enabled HTTP transmissions? If yes, this might be difficult to virtualize. My high level understanding of Identity Web Services is that in addition to VPN tunneling there may be token verification services based upon fingerprints and/or common access cards. There is also the concept of synchronous and asynchronous broker services.