As far as i understand, unless you do some kind of security posture assessment (which requires expensive apex licenses for both anyconnect and ISE and some custom development), VPN framework itself doesn't really have any mechanism to verify computer...
It has to be requested via Cisco as far as i know. There is no trial available from web site or something like that. WSA interface will not work withour a license at all,quite disappointing. Not sure, but I thing partners from premier level and highe...
I faced the same problem while I was testing my OSPF area with ASA 8.4.4I have got a similar result: around 5 second for OSPF to converge. But in my case ASA sits between 2 routers in a totally NSSA area. One of them is ABR connected to the backbone ...