Dear all,

I know that this is FreeRadius forum, but since ICRadius forum is almost dead i thought someone can help me, here. It turns out this morning that I have over 1,800,000 records in my RadAcct table with blank username. Probably I am under attack. The record is so much different than regular user records authenticated through NAS server. In each record AcctSessionTime=1

	Attack	Regular
NASIPAddress	A.B.C.D	A.B.C.D
NASPortType	Virtual	Async
AcctAuthentic	local	Radius
CalledStationId	first 10 char of A.B.C.D	Regular phone number
AcctTerminateCause	Lost-Carrier	Usually User-Request
Service-Type	NAS-Prompt-User	Framed-User
NASPortId	122, 123	*

Can anyone tell me, what is going on? How can I stop this attacker?

BR, Baynaa.