You can set the auth log to a highly logging level using the logconfig command and then tail the log while surfing. Also you can add the variable %m to the accesslog and it will add the authenticaiton method to the accesslog.
386349299.719 976 192.168.2.101 TCP_MISS/200 93399 GET http://www.yahoo.com/ "SSALAB\xxxxxx@SSALAB" DIRECT/www.yahoo.com text/html DEFAULT_CASE_12-SSALABXPMachinePol-SSALXPMachine-NONE-NONE-NONE-DefaultGroup - 126.96.36.199 "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)" NTLMSSP
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...