non credo che siano le scansioni dos a farti avere una connessione lenta, questo è uno stralcio del mio log, molto simile al tuo
[DoS attack: ACK Scan] from source: 91.74.184.69:58973, Thursday, July 18,2013 06:10:05
[DoS attack: ACK Scan] from source: 91.74.184.69:58973, Thursday, July 18,2013 06:09:35
[DoS attack: ACK Scan] from source: 91.74.184.69:56962, Thursday, July 18,2013 06:08:00
[DoS attack: ACK Scan] from source: 83.83.166.249:55669, Thursday, July 18,2013 06:06:43
[DoS attack: ACK Scan] from source: 178.211.81.246:17299, Thursday, July 18,2013 06:04:36
[DoS attack: ACK Scan] from source: 91.74.184.69:51556, Thursday, July 18,2013 06:03:56
[DoS attack: ACK Scan] from source: 91.74.184.69:51556, Thursday, July 18,2013 06:03:26
[DoS attack: ACK Scan] from source: 91.74.184.69:53774, Thursday, July 18,2013 06:01:54
[DoS attack: ACK Scan] from source: 91.74.184.69:53774, Thursday, July 18,2013 06:01:24
[DoS attack: ACK Scan] from source: 83.83.166.249:54541, Thursday, July 18,2013 06:00:25
[DoS attack: ACK Scan] from source: 91.74.184.69:48557, Thursday, July 18,2013 05:59:51
[DoS attack: ACK Scan] from source: 83.83.166.249:54541, Thursday, July 18,2013 05:58:50
[DoS attack: ACK Scan] from source: 178.211.81.246:17438, Thursday, July 18,2013 05:58:19
[DoS attack: ACK Scan] from source: 91.74.184.69:53902, Thursday, July 18,2013 05:57:51
[DoS attack: ACK Scan] from source: 91.74.184.69:53902, Thursday, July 18,2013 05:57:21
[DoS attack: ACK Scan] from source: 91.74.184.69:60779, Thursday, July 18,2013 05:55:47
[DoS attack: ACK Scan] from source: 91.74.184.69:60779, Thursday, July 18,2013 05:55:18
[DoS attack: ACK Scan] from source: 83.83.166.249:53636, Thursday, July 18,2013 05:53:39
[DoS attack: ACK Scan] from source: 83.83.166.249:53636, Thursday, July 18,2013 05:52:22
[DoS attack: ACK Scan] from source: 178.211.81.246:17287, Thursday, July 18,2013 05:51:57
[DoS attack: ACK Scan] from source: 91.74.184.69:40367, Thursday, July 18,2013 05:47:37
[DoS attack: ACK Scan] from source: 83.83.166.249:52610, Thursday, July 18,2013 05:46:05
[DoS attack: ACK Scan] from source: 83.83.166.249:52610, Thursday, July 18,2013 05:45:43
[DoS attack: ACK Scan] from source: 83.83.166.249:52218, Thursday, July 18,2013 05:43:17
[DoS attack: ACK Scan] from source: 83.83.166.249:52218, Thursday, July 18,2013 05:42:48
[DoS attack: ACK Scan] from source: 91.74.184.69:34515, Thursday, July 18,2013 05:41:28
[DoS attack: ACK Scan] from source: 178.211.81.246:17482, Thursday, July 18,2013 05:40:16
[DoS attack: ACK Scan] from source: 178.211.81.246:17482, Thursday, July 18,2013 05:39:46
[DoS attack: ACK Scan] from source: 91.74.184.69:40739, Thursday, July 18,2013 05:37:21
[DoS attack: ACK Scan] from source: 83.83.166.249:51264, Thursday, July 18,2013 05:36:09
[DoS attack: ACK Scan] from source: 83.83.166.249:51264, Thursday, July 18,2013 05:35:49
[DoS attack: ACK Scan] from source: 91.74.184.69:54412, Thursday, July 18,2013 05:35:17
[DoS attack: ACK Scan] from source: 91.74.184.69:54412, Thursday, July 18,2013 05:34:47
[DoS attack: ACK Scan] from source: 178.211.81.246:17569, Thursday, July 18,2013 05:34:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17569, Thursday, July 18,2013 05:33:39
[DoS attack: ACK Scan] from source: 91.74.184.69:45865, Thursday, July 18,2013 05:32:42
[DoS attack: ACK Scan] from source: 83.83.166.249:50686, Thursday, July 18,2013 05:32:06
[DoS attack: ACK Scan] from source: 83.83.166.249:50686, Thursday, July 18,2013 05:31:44
[DoS attack: ACK Scan] from source: 91.74.184.69:59536, Thursday, July 18,2013 05:28:37
[DoS attack: ACK Scan] from source: 83.83.166.249:50095, Thursday, July 18,2013 05:28:17
[DoS attack: ACK Scan] from source: 178.211.81.246:17159, Thursday, July 18,2013 05:27:52
[DoS attack: ACK Scan] from source: 178.211.81.246:17159, Thursday, July 18,2013 05:27:30
[DoS attack: ACK Scan] from source: 91.74.184.69:40894, Thursday, July 18,2013 05:26:35
[DoS attack: ACK Scan] from source: 83.83.166.249:49558, Thursday, July 18,2013 05:24:22
[DoS attack: ACK Scan] from source: 91.74.184.69:52733, Thursday, July 18,2013 05:22:30
[DoS attack: ACK Scan] from source: 83.83.166.249:49261, Thursday, July 18,2013 05:21:28
[DoS attack: ACK Scan] from source: 91.74.184.69:58920, Thursday, July 18,2013 05:20:26
[DoS attack: ACK Scan] from source: 91.74.184.69:41850, Thursday, July 18,2013 05:18:53
[DoS attack: ACK Scan] from source: 91.74.184.69:41850, Thursday, July 18,2013 05:18:24
[DoS attack: ACK Scan] from source: 83.83.166.249:65014, Thursday, July 18,2013 05:17:13
[DoS attack: ACK Scan] from source: 91.74.184.69:33332, Thursday, July 18,2013 05:16:21
[DoS attack: ACK Scan] from source: 83.83.166.249:64633, Thursday, July 18,2013 05:15:18
[DoS attack: ACK Scan] from source: 142.91.112.114:80, Thursday, July 18,2013 05:14:25
[DoS attack: ACK Scan] from source: 178.211.81.246:17503, Thursday, July 18,2013 05:13:22
[DoS attack: ACK Scan] from source: 91.74.184.69:35675, Thursday, July 18,2013 05:12:17
[DoS attack: ACK Scan] from source: 83.83.166.249:64012, Thursday, July 18,2013 05:10:28
[DoS attack: ACK Scan] from source: 178.211.81.246:17661, Thursday, July 18,2013 05:09:11
[DoS attack: ACK Scan] from source: 83.83.166.249:63746, Thursday, July 18,2013 05:08:06
[DoS attack: ACK Scan] from source: 83.83.166.249:63454, Thursday, July 18,2013 05:07:21
[DoS attack: ACK Scan] from source: 83.83.166.249:63454, Thursday, July 18,2013 05:06:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17335, Thursday, July 18,2013 05:05:33
[DoS attack: ACK Scan] from source: 83.83.166.249:62891, Thursday, July 18,2013 05:02:14
[DoS attack: ACK Scan] from source: 92.19.163.18:54583, Thursday, July 18,2013 05:01:39
[DoS attack: ACK Scan] from source: 91.74.184.69:48459, Thursday, July 18,2013 04:59:52
[DoS attack: ACK Scan] from source: 91.74.223.79:62327, Thursday, July 18,2013 04:59:01
[DoS attack: ACK Scan] from source: 91.74.184.69:50690, Thursday, July 18,2013 04:57:50
[DoS attack: ACK Scan] from source: 91.74.184.69:47560, Thursday, July 18,2013 04:56:47
[DoS attack: ACK Scan] from source: 91.74.184.69:38616, Thursday, July 18,2013 04:55:46
[DoS attack: ACK Scan] from source: 83.83.166.249:61749, Thursday, July 18,2013 04:54:08
[DoS attack: ACK Scan] from source: 83.83.166.249:61438, Thursday, July 18,2013 04:53:02
[DoS attack: ACK Scan] from source: 83.83.166.249:61438, Thursday, July 18,2013 04:52:09
[DoS attack: ACK Scan] from source: 83.83.166.249:61438, Thursday, July 18,2013 04:51:43
[DoS attack: ACK Scan] from source: 178.211.81.246:17010, Thursday, July 18,2013 04:50:01
[DoS attack: ACK Scan] from source: 83.83.166.249:60853, Thursday, July 18,2013 04:48:41
[DoS attack: ACK Scan] from source: 83.83.166.249:60498, Thursday, July 18,2013 04:45:47
[DoS attack: ACK Scan] from source: 178.211.81.246:17435, Thursday, July 18,2013 04:44:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17435, Thursday, July 18,2013 04:44:37
[DoS attack: ACK Scan] from source: 178.211.81.246:17116, Thursday, July 18,2013 04:41:47
[DoS attack: ACK Scan] from source: 178.211.81.246:17116, Thursday, July 18,2013 04:40:37
[DoS attack: ACK Scan] from source: 178.211.81.246:17239, Thursday, July 18,2013 04:37:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17239, Thursday, July 18,2013 04:36:53
[DoS attack: ACK Scan] from source: 178.211.81.246:17239, Thursday, July 18,2013 04:36:32
[DoS attack: ACK Scan] from source: 178.211.81.246:17527, Thursday, July 18,2013 04:28:32
[DoS attack: ACK Scan] from source: 178.211.81.246:17590, Thursday, July 18,2013 04:25:16
[DoS attack: ACK Scan] from source: 178.211.81.246:17387, Thursday, July 18,2013 04:20:33
[DoS attack: ACK Scan] from source: 178.211.81.246:17387, Thursday, July 18,2013 04:20:11
[DoS attack: ACK Scan] from source: 83.83.166.249:56825, Thursday, July 18,2013 04:18:27
[DoS attack: ACK Scan] from source: 178.211.81.246:17042, Thursday, July 18,2013 04:17:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17042, Thursday, July 18,2013 04:16:26
[DoS attack: ACK Scan] from source: 69.195.124.84:80, Thursday, July 18,2013 04:15:45
[DoS attack: ACK Scan] from source: 178.211.81.246:17577, Thursday, July 18,2013 04:08:04
[DoS attack: ACK Scan] from source: 178.211.81.246:17174, Thursday, July 18,2013 04:04:51
[DoS attack: ACK Scan] from source: 178.211.81.246:17174, Thursday, July 18,2013 04:04:13
[DoS attack: ACK Scan] from source: 178.211.81.246:17112, Thursday, July 18,2013 04:00:53
[DoS attack: ACK Scan] from source: 178.211.81.246:17112, Thursday, July 18,2013 04:00:11
[DoS attack: ACK Scan] from source: 178.211.81.246:17112, Thursday, July 18,2013 03:59:50
[DoS attack: ACK Scan] from source: 178.211.81.246:17570, Thursday, July 18,2013 03:56:36
[DoS attack: ACK Scan] from source: 178.211.81.246:17570, Thursday, July 18,2013 03:56:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17313, Thursday, July 18,2013 03:52:33
[DoS attack: ACK Scan] from source: 178.211.81.246:17313, Thursday, July 18,2013 03:51:56
[DoS attack: ACK Scan] from source: 178.211.81.246:17189, Thursday, July 18,2013 03:48:08
[DoS attack: ACK Scan] from source: 178.211.81.246:17189, Thursday, July 18,2013 03:47:41
[DoS attack: ACK Scan] from source: 178.211.81.246:17206, Thursday, July 18,2013 03:44:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17206, Thursday, July 18,2013 03:43:37
[DoS attack: ACK Scan] from source: 178.211.81.246:17298, Thursday, July 18,2013 03:40:04
[DoS attack: ACK Scan] from source: 178.211.81.246:17298, Thursday, July 18,2013 03:39:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17124, Thursday, July 18,2013 03:35:46
[DoS attack: ACK Scan] from source: 178.211.81.246:17124, Thursday, July 18,2013 03:35:22
[DoS attack: ACK Scan] from source: 178.211.81.246:17280, Thursday, July 18,2013 03:32:33
[DoS attack: ACK Scan] from source: 178.211.81.246:17280, Thursday, July 18,2013 03:31:44
[DoS attack: ACK Scan] from source: 178.211.81.246:17280, Thursday, July 18,2013 03:31:20
[DoS attack: ACK Scan] from source: 178.211.81.246:17134, Thursday, July 18,2013 03:27:28
[DoS attack: ACK Scan] from source: 178.211.81.246:17588, Thursday, July 18,2013 03:24:07
[DoS attack: ACK Scan] from source: 178.211.81.246:17588, Thursday, July 18,2013 03:23:24
[DoS attack: ACK Scan] from source: 178.211.81.246:17588, Thursday, July 18,2013 03:23:03
[DoS attack: ACK Scan] from source: 178.211.81.246:17094, Thursday, July 18,2013 03:20:10
[DoS attack: ACK Scan] from source: 178.211.81.246:17094, Thursday, July 18,2013 03:19:23
[DoS attack: ACK Scan] from source: 178.211.81.246:17094, Thursday, July 18,2013 03:18:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17307, Thursday, July 18,2013 03:15:01
[DoS attack: ACK Scan] from source: 178.211.81.246:17364, Thursday, July 18,2013 03:11:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17364, Thursday, July 18,2013 03:11:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17189, Thursday, July 18,2013 03:07:44
[DoS attack: ACK Scan] from source: 178.211.81.246:17189, Thursday, July 18,2013 03:07:02
[DoS attack: ACK Scan] from source: 178.211.81.246:17189, Thursday, July 18,2013 03:06:41
[DoS attack: ACK Scan] from source: 178.211.81.246:17275, Thursday, July 18,2013 03:03:39
[DoS attack: ACK Scan] from source: 178.211.81.246:17275, Thursday, July 18,2013 03:02:57
[DoS attack: ACK Scan] from source: 178.211.81.246:17275, Thursday, July 18,2013 03:02:36
[DoS attack: ACK Scan] from source: 178.211.81.246:17331, Thursday, July 18,2013 02:59:12
[DoS attack: ACK Scan] from source: 178.211.81.246:17331, Thursday, July 18,2013 02:58:42
[DoS attack: ACK Scan] from source: 178.211.81.246:17261, Thursday, July 18,2013 02:55:27
[DoS attack: ACK Scan] from source: 178.211.81.246:17261, Thursday, July 18,2013 02:54:47
[DoS attack: ACK Scan] from source: 178.211.81.246:17092, Thursday, July 18,2013 02:51:29
[DoS attack: ACK Scan] from source: 178.211.81.246:17092, Thursday, July 18,2013 02:50:46
[DoS attack: ACK Scan] from source: 178.211.81.246:17092, Thursday, July 18,2013 02:50:24
[DoS attack: ACK Scan] from source: 178.211.81.246:17340, Thursday, July 18,2013 02:47:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17340, Thursday, July 18,2013 02:46:46
[DoS attack: ACK Scan] from source: 178.211.81.246:17340, Thursday, July 18,2013 02:46:22
[DoS attack: ACK Scan] from source: 178.211.81.246:17450, Thursday, July 18,2013 02:38:11
[DoS attack: ACK Scan] from source: 178.211.81.246:17360, Thursday, July 18,2013 02:35:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17360, Thursday, July 18,2013 02:34:26
[DoS attack: ACK Scan] from source: 178.211.81.246:17178, Thursday, July 18,2013 02:27:07
[DoS attack: ACK Scan] from source: 178.211.81.246:17178, Thursday, July 18,2013 02:26:22
[DoS attack: ACK Scan] from source: 178.211.81.246:17178, Thursday, July 18,2013 02:25:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17324, Thursday, July 18,2013 02:23:06
[DoS attack: ACK Scan] from source: 178.211.81.246:17324, Thursday, July 18,2013 02:22:19
[DoS attack: ACK Scan] from source: 178.211.81.246:17324, Thursday, July 18,2013 02:21:55
[DoS attack: ACK Scan] from source: 178.211.81.246:17481, Thursday, July 18,2013 02:18:49
[DoS attack: ACK Scan] from source: 178.211.81.246:17481, Thursday, July 18,2013 02:18:08
[DoS attack: ACK Scan] from source: 178.211.81.246:17143, Thursday, July 18,2013 02:14:48
[DoS attack: ACK Scan] from source: 178.211.81.246:17143, Thursday, July 18,2013 02:14:04
[DoS attack: ACK Scan] from source: 178.211.81.246:17143, Thursday, July 18,2013 02:13:42
[DoS attack: ACK Scan] from source: 178.211.81.246:17542, Thursday, July 18,2013 02:10:47
[DoS attack: ACK Scan] from source: 178.211.81.246:17542, Thursday, July 18,2013 02:10:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17323, Thursday, July 18,2013 02:06:18
[DoS attack: ACK Scan] from source: 178.211.81.246:17323, Thursday, July 18,2013 02:05:44
[DoS attack: ACK Scan] from source: 178.211.81.246:17318, Thursday, July 18,2013 02:02:46
[DoS attack: ACK Scan] from source: 178.211.81.246:17318, Thursday, July 18,2013 02:01:54
[DoS attack: ACK Scan] from source: 178.211.81.246:17318, Thursday, July 18,2013 02:01:28
[DoS attack: ACK Scan] from source: 178.211.81.246:17392, Thursday, July 18,2013 01:58:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17392, Thursday, July 18,2013 01:57:27
[DoS attack: ACK Scan] from source: 178.211.81.246:17633, Thursday, July 18,2013 01:54:12
[DoS attack: ACK Scan] from source: 178.211.81.246:17633, Thursday, July 18,2013 01:53:13
[DoS attack: ACK Scan] from source: 178.211.81.246:17529, Thursday, July 18,2013 01:49:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17529, Thursday, July 18,2013 01:49:12
[DoS attack: ACK Scan] from source: 64.13.228.173:22, Thursday, July 18,2013 01:48:40
[DoS attack: ACK Scan] from source: 178.211.81.246:17092, Thursday, July 18,2013 01:46:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17092, Thursday, July 18,2013 01:45:21
[DoS attack: ACK Scan] from source: 178.211.81.246:17351, Thursday, July 18,2013 01:41:18
[DoS attack: ACK Scan] from source: 178.211.81.246:17183, Thursday, July 18,2013 01:37:54
[DoS attack: ACK Scan] from source: 178.211.81.246:17183, Thursday, July 18,2013 01:37:14
[DoS attack: ACK Scan] from source: 93.90.178.9:80, Thursday, July 18,2013 01:35:56
[DoS attack: ACK Scan] from source: 178.211.81.246:17391, Thursday, July 18,2013 01:33:48
[DoS attack: ACK Scan] from source: 178.211.81.246:17391, Thursday, July 18,2013 01:33:07
[DoS attack: ACK Scan] from source: 178.211.81.246:17391, Thursday, July 18,2013 01:32:46
[DoS attack: ACK Scan] from source: 178.211.81.246:17356, Thursday, July 18,2013 01:29:24
[DoS attack: ACK Scan] from source: 178.211.81.246:17356, Thursday, July 18,2013 01:28:53
[DoS attack: ACK Scan] from source: 178.211.81.246:17422, Thursday, July 18,2013 01:25:42
[DoS attack: ACK Scan] from source: 178.211.81.246:17422, Thursday, July 18,2013 01:25:00
[DoS attack: ACK Scan] from source: 178.211.81.246:17422, Thursday, July 18,2013 01:24:39
[DoS attack: ACK Scan] from source: 178.211.81.246:17378, Thursday, July 18,2013 01:21:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17378, Thursday, July 18,2013 01:20:40
[DoS attack: ACK Scan] from source: 178.211.81.246:17218, Thursday, July 18,2013 01:17:14
[DoS attack: ACK Scan] from source: 178.211.81.246:17218, Thursday, July 18,2013 01:16:43
[DoS attack: ACK Scan] from source: 64.13.228.173:22, Thursday, July 18,2013 01:12:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17409, Thursday, July 18,2013 01:04:59
[DoS attack: ACK Scan] from source: 178.211.81.246:17409, Thursday, July 18,2013 01:04:31
[DoS attack: ACK Scan] from source: 178.211.81.246:17093, Thursday, July 18,2013 01:00:51
[DoS attack: ACK Scan] from source: 178.211.81.246:17093, Thursday, July 18,2013 01:00:24
[DoS attack: ACK Scan] from source: 64.13.228.173:22, Thursday, July 18,2013 00:55:35
[DoS attack: ACK Scan] from source: 178.211.81.246:17422, Thursday, July 18,2013 00:52:42
[DoS attack: ACK Scan] from source: 178.211.81.246:17375, Thursday, July 18,2013 00:48:27
eppure i miei valori sono in linea con una 7mega.