Cisco ASA 8.4(5) vpn users +ldap
aaa-server NAME-LDAP protocol ldap
aaa-server NAME-LDAP (inside) host X.X.X.X
ldap-base-dn dc=DOMAIN ldap-scope subtree
ldap-naming-attribute sAMAccountName
ldap-login-password USER-PASSWORD
ldap-login-dn cn=USER,cn=users,dc=DOMAIN
server-type microsoft
tunnel-group TUNNEL-GROUP-NAME general-attributes
authentication-server-group NAME-LDAP
if you have any problems use
debug ldap 255