firstly, thanks Mathew Newton and alan buxey.
I run freeradius -X and run test in ciso asa5520. details as follows.
rad_recv: Access-Request packet from host 192.168.30.254 port 1025, id=72, length=61
User-Name = "tsb"
User-Password = "123456"
NAS-IP-Address = 192.168.30.254
NAS-Port = 64
NAS-Port-Type = Virtual
# Executing section authorize from file /opt/freeadius/etc/raddb/sites-enabled/default
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
++[digest] returns noop
[suffix] No
'@' in User-Name = "tsb", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
++[files] returns noop
++[expiration] returns noop
++[logintime] returns noop
[pap] WARNING! No "k!
nown good" password found for the user. Authentication may fail because of this.
++[pap] returns noop
ERROR: No authenticate method (Auth-Type) found for the request: Rejecting the user
Failed to authenticate the user.
Using Post-Auth-Type REJECT
# Executing group from file /opt/freeadius/etc/raddb/sites-enabled/default
+- entering group REJECT {...}
[attr_filter.access_reject] expand: %{User-Name} -> tsb
attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Delaying reject of request 1 for 1 seconds
Going to the next request
Waking up in 0.9 seconds.
Sending delayed reject for request 1
Sending Access-Reject of id 72 to 192.168.30.254 port 1025
Waking up in 4.9 seconds.
Cleaning up request 1 ID 72 with timestamp +430
Ready to process requests.