My PBX is getting attack but i am not sure what to do

General Help
1

I am get tthousand of calls today from one of my DID through our sip provider from all 602 area code here is a example of my cdr. when we answer the call there is no one there and it just a quick hangup

  1. 2013-10-03 21:07:59 SIP/IDVIN-… 6023761544 “anonymous” <6023761544> 7001 ANSWERED 00:53
  2. 2013-10-03 21:07:50 SIP/IDVIN-… 6023760582 “anonymous” <6023760582> 7001 ANSWERED 00:58
  3. 2013-10-03 21:07:48 SIP/IDVIN-… 6024716540 “anonymous” <6024716540> 7001 ANSWERED 01:11
  4. 2013-10-03 21:07:44 SIP/IDVIN-… 6023765085 “anonymous” <6023765085> 7001 ANSWERED 00:36
  5. 2013-10-03 21:07:42 SIP/IDVIN-… 6023613441 “anonymous” <6023613441> 7001 ANSWERED 00:31
  6. 2013-10-03 21:07:39 SIP/IDVIN-… 6023762156 “anonymous” <6023762156> 7001 ANSWERED 00:32
  7. 2013-10-03 21:07:39 SIP/IDVIN-… 6027995336 “anonymous” <6027995336> 7001 ANSWERED 00:19
  8. 2013-10-03 21:07:38 SIP/IDVIN-… 6023760885 “anonymous” <6023760885> 7001 ANSWERED 00:25
  9. 2013-10-03 21:07:37 SIP/IDVIN-… 6023760103 “anonymous” <6023760103> 7001 ANSWERED 00:34
  10. 2013-10-03 21:07:36 SIP/IDVIN-… 6023763300 “anonymous” <6023763300> 7001 ANSWERED 00:47
  11. 2013-10-03 21:07:33 SIP/IDVIN-… 6023764402 “anonymous” <6023764402> 7001 ANSWERED 00:36
  12. 2013-10-03 21:07:25 SIP/IDVIN-… 6023766293 “anonymous” <6023766293> 7001 ANSWERED 00:51
  13. 2013-10-03 21:07:23 SIP/IDVIN-… 6023765541 “anonymous” <6023765541> 7001 ANSWERED 00:37
  14. 2013-10-03 21:07:16 SIP/IDVIN-… 6023762509 “anonymous” <6023762509> 7001 ANSWERED 00:23
  15. 2013-10-03 21:07:13 SIP/IDVIN-… 6023762619 “anonymous” <6023762619> 7001 ANSWERED 00:32
  16. 2013-10-03 21:07:07 SIP/IDVIN-… 6023762217 “anonymous” <6023762217> 7001 ANSWERED 00:34
  17. 2013-10-03 21:07:07 SIP/IDVIN-… 6023765085 “anonymous” <6023765085> 7001 ANSWERED 00:32
  18. 2013-10-03 21:06:48 SIP/IDVIN-… 6023760644 “anonymous” <6023760644> 7001 ANSWERED 00:32
  19. 2013-10-03 21:06:47 SIP/IDVIN-… 6023765482 “anonymous” <6023765482> 7001 ANSWERED 00:32
  20. 2013-10-03 21:06:41 SIP/IDVIN-… 6023765777 “anonymous” <6023765777> 7001 ANSWERED 00:43
  21. 2013-10-03 21:06:35 SIP/IDVIN-… 6023765085 “anonymous” <6023765085> 7001 ANSWERED 00:25
  22. 2013-10-03 21:06:33 SIP/IDVIN-… 6023766294 “anonymous” <6023766294> 7001 ANSWERED 00:36
  23. 2013-10-03 21:06:29 SIP/IDVIN-… 6023760318 “anonymous” <6023760318> 7001 ANSWERED 00:41
  24. 2013-10-03 21:06:22 SIP/IDVIN-… 6023764272 “anonymous” <6023764272> 7001 ANSWERED 03:06
  25. 2013-10-03 21:06:21 SIP/IDVIN-… 6022911583 “anonymous” <6022911583> s ANSWERED 00:14
2

You could start of by verifying extension 7001 is what you think it is, from bash:-

rasterisk -x ‘sip show peer 7001’