It seems you are not placing the correct password for user authentication.
Lookinf at the log you have tunnel group name vpn, here you should get pop-up window to enter the pre-share key password to authenticate the tunnel, seems you got this far, once you authenticate through the tunnel another pop-up window should come up which is the user authentication and you are using asavpn as user name , here is where it seems to be failing, do you have correct password for this user.
Rgds
-Jorge
Jorge Rodriguez
