The last few weeks I've been having trouble with the C7800 wifi going offline and the modem locks up such that it can't display much more than the initial admin home page when trying to access the gateway admin settings. Each time this happens I have to power cycle the modem and then service returns and the admin pages are again available. When I check the logs, there's always a recent DOS attack (of varying types) just prior to the lockup. What gives? If the unit knows it's a DOS attack and it can log it, why can it not avoid the lockup? Is someone aware of the issue and working on a firmware fix? Are there settings I can change to prevent this? Thanks!
[admin login] from source 192.168.0.5, Sat, Jul 31, 2021 10:34:52
...
[Initialized, firmware version: V6.01.07] Thu, Jan 01, 1970 00:00:14
[DHCP IP: (192.168.0.2)] to MAC address 84:57:33:4f:5b:c7, Sat, Jul 31, 2021 10:27:29
[DoS attack: UDP Scan] from source: 36.27.214.242, port 44682, Sat, Jul 31, 2021 07:54:40
[DoS attack: Sync flood] from source: 45.129.136.15, port 65532, Sat, Jul 31, 2021 07:44:18
...
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Sat, Jul 31, 2021 04:01:20
[DoS attack: UDP Scan] from source: 89.248.173.131, port 45152, Sat, Jul 31, 2021 02:59:24
[DoS attack: UDP Scan] from source: 188.246.224.126, port 49061, Sat, Jul 31, 2021 01:17:02
[DoS attack: Echo char gen] from source: 184.105.139.85, port 42204, Sat, Jul 31, 2021 00:23:10
[DHCP IP: (192.168.0.2)] to MAC address 84:57:33:4f:5b:c7, Fri, Jul 30, 2021 22:27:18
[DoS attack: Sync flood] from source: 185.156.72.20, port 65534, Fri, Jul 30, 2021 22:24:59
[DoS attack: UDP Scan] from source: 146.88.240.4, port 56989, Fri, Jul 30, 2021 20:49:48
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Fri, Jul 30, 2021 19:10:05
[DoS attack: Echo char gen] from source: 146.88.240.4, port 50751, Fri, Jul 30, 2021 17:34:48
...
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 6672, Fri, Jul 30, 2021 14:41:50
[DoS attack: Echo char gen] from source: 123.160.221.34, port 41856, Fri, Jul 30, 2021 14:28:22
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 6672, Fri, Jul 30, 2021 14:21:42
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 6672, Fri, Jul 30, 2021 14:01:31
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Fri, Jul 30, 2021 13:40:59
[DoS attack: UDP Scan] from source: 185.94.111.1, port 38006, Fri, Jul 30, 2021 13:06:21
[DoS attack: UDP Scan] from source: 185.94.111.1, port 54160, Fri, Jul 30, 2021 11:58:48
[DoS attack: Echo char gen] from source: 141.212.123.213, port 39187, Fri, Jul 30, 2021 10:48:20
[DoS attack: UDP Scan] from source: 89.248.173.131, port 56110, Fri, Jul 30, 2021 07:55:55
[DoS attack: Echo char gen] from source: 184.105.139.85, port 42280, Fri, Jul 30, 2021 01:54:30
[DoS attack: UDP Scan] from source: 155.93.176.92, port 1, Thu, Jul 29, 2021 22:40:52
[DoS attack: UDP Scan] from source: 146.88.240.4, port 39398, Thu, Jul 29, 2021 20:47:29
[DoS attack: Echo char gen] from source: 195.230.103.246, port 60261, Thu, Jul 29, 2021 20:23:23
[DoS attack: UDP Scan] from source: 89.248.173.131, port 49917, Thu, Jul 29, 2021 18:55:14
[DoS attack: Echo char gen] from source: 146.88.240.4, port 43714, Thu, Jul 29, 2021 17:32:31
[DoS attack: Sync flood] from source: 194.165.16.49, port 65527, Thu, Jul 29, 2021 16:00:59
[DoS attack: Echo char gen] from source: 185.165.190.17, port 27221, Thu, Jul 29, 2021 15:46:45
[DoS attack: Echo char gen] from source: 193.37.255.114, port 27221, Thu, Jul 29, 2021 13:00:28
...
[DoS attack: Echo char gen] from source: 183.136.225.12, port 7188, Thu, Jul 29, 2021 06:56:44
[DoS attack: UDP Scan] from source: 89.248.173.131, port 43982, Thu, Jul 29, 2021 06:15:54
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 65101, Thu, Jul 29, 2021 02:55:00
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Thu, Jul 29, 2021 00:38:28
[DoS attack: Echo char gen] from source: 184.105.139.81, port 55970, Wed, Jul 28, 2021 23:52:49
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 62666, Wed, Jul 28, 2021 21:46:41
[DoS attack: UDP Scan] from source: 146.88.240.4, port 38179, Wed, Jul 28, 2021 20:47:33
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 50478, Wed, Jul 28, 2021 20:40:50
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Wed, Jul 28, 2021 19:23:38
[DoS attack: Echo char gen] from source: 146.88.240.4, port 40609, Wed, Jul 28, 2021 17:32:35
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 63435, Wed, Jul 28, 2021 15:22:52
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 55304, Wed, Jul 28, 2021 13:38:35
[DoS attack: UDP Scan] from source: 185.94.111.1, port 36179, Wed, Jul 28, 2021 13:37:53
[DoS attack: UDP Scan] from source: 185.94.111.1, port 33487, Wed, Jul 28, 2021 11:20:10
[DoS attack: UDP Scan] from source: 36.27.214.242, port 45463, Wed, Jul 28, 2021 08:28:39
[DoS attack: UDP Scan] from source: 89.248.173.131, port 57734, Wed, Jul 28, 2021 06:14:29
[DoS attack: Sync flood] from source: 45.129.136.15, port 65532, Wed, Jul 28, 2021 04:01:40
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 58064, Wed, Jul 28, 2021 02:04:16
[DoS attack: Echo char gen] from source: 184.105.139.121, port 37717, Wed, Jul 28, 2021 00:38:34
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 54852, Tue, Jul 27, 2021 23:00:09
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Tue, Jul 27, 2021 22:31:20
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 64282, Tue, Jul 27, 2021 21:35:29
[DoS attack: UDP Scan] from source: 146.88.240.4, port 49680, Tue, Jul 27, 2021 20:47:34
[DoS attack: Echo char gen] from source: 91.210.107.56, port 40000, Tue, Jul 27, 2021 19:37:11
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 56157, Tue, Jul 27, 2021 19:24:33
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Tue, Jul 27, 2021 18:09:39
[DoS attack: Echo char gen] from source: 146.88.240.4, port 59104, Tue, Jul 27, 2021 17:32:34
[DoS attack: Echo char gen] from source: 91.210.107.56, port 40000, Tue, Jul 27, 2021 16:03:00
[UPnP set event: AddPortMapping] from source 192.168.0.50, port 55061, Tue, Jul 27, 2021 15:26:48
[DoS attack: Echo char gen] from source: 183.136.225.12, port 57954, Tue, Jul 27, 2021 11:51:55
[DoS attack: Echo char gen] from source: 45.135.232.96, port 50223, Tue, Jul 27, 2021 10:52:29
[DoS attack: Sync flood] from source: 206.189.49.24, port 58815, Tue, Jul 27, 2021 02:40:31
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Tue, Jul 27, 2021 02:38:09
[DoS attack: UDP Scan] from source: 183.136.225.12, port 6474, Tue, Jul 27, 2021 02:17:23
[DoS attack: Sync flood] from source: 45.129.136.15, port 65532, Tue, Jul 27, 2021 02:00:09
[DoS attack: Echo char gen] from source: 184.105.139.97, port 41324, Tue, Jul 27, 2021 00:42:29
[DoS attack: Echo char gen] from source: 71.6.232.5, port 49780, Tue, Jul 27, 2021 00:38:58
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Mon, Jul 26, 2021 21:14:15
[DoS attack: UDP Scan] from source: 146.88.240.4, port 59460, Mon, Jul 26, 2021 20:47:32
[DoS attack: UDP Scan] from source: 89.248.173.131, port 52917, Mon, Jul 26, 2021 19:29:16
[DoS attack: Echo char gen] from source: 146.88.240.4, port 34066, Mon, Jul 26, 2021 17:32:34
[DoS attack: UDP Scan] from source: 89.248.173.131, port 43082, Mon, Jul 26, 2021 16:44:57
[DoS attack: Echo char gen] from source: 147.182.198.185, port 44244, Mon, Jul 26, 2021 15:27:54
[DoS attack: UDP Scan] from source: 89.248.173.131, port 53297, Mon, Jul 26, 2021 14:01:49
[DoS attack: UDP Scan] from source: 89.248.173.131, port 43324, Mon, Jul 26, 2021 11:16:43
[DoS attack: Echo char gen] from source: 45.33.17.211, port 53219, Mon, Jul 26, 2021 10:02:21
[DoS attack: UDP Scan] from source: 89.248.173.131, port 53370, Mon, Jul 26, 2021 08:30:27
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Mon, Jul 26, 2021 07:17:55
[DoS attack: Sync flood] from source: 45.129.136.15, port 65531, Mon, Jul 26, 2021 07:11:03
[DoS attack: UDP Scan] from source: 89.248.173.131, port 43189, Mon, Jul 26, 2021 05:40:47
[DoS attack: Echo char gen] from source: 52.73.169.169, port 58658, Mon, Jul 26, 2021 03:20:16
[DoS attack: UDP Scan] from source: 89.248.173.131, port 53190, Mon, Jul 26, 2021 02:53:31
[DoS attack: Echo char gen] from source: 184.105.139.125, port 45019, Mon, Jul 26, 2021 01:31:47
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Mon, Jul 26, 2021 01:05:18
[DoS attack: UDP Scan] from source: 89.248.173.131, port 43082, Mon, Jul 26, 2021 00:05:26
[DoS attack: Echo char gen] from source: 154.89.5.18, port 58914, Sun, Jul 25, 2021 22:58:00
[DoS attack: UDP Scan] from source: 146.88.240.4, port 43223, Sun, Jul 25, 2021 20:47:33
[DoS attack: UDP Scan] from source: 89.248.173.131, port 50280, Sun, Jul 25, 2021 20:32:25
[DoS attack: Echo char gen] from source: 185.244.39.109, port 45023, Sun, Jul 25, 2021 20:13:21
[DoS attack: Echo char gen] from source: 146.88.240.4, port 48916, Sun, Jul 25, 2021 17:32:34
[DoS attack: UDP Scan] from source: 89.248.173.131, port 52512, Sun, Jul 25, 2021 10:07:45
[DoS attack: UDP Scan] from source: 36.27.214.242, port 46250, Sun, Jul 25, 2021 08:28:17
[DoS attack: UDP Scan] from source: 183.136.225.12, port 42258, Sun, Jul 25, 2021 07:18:06
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Sun, Jul 25, 2021 04:24:45
[DoS attack: Echo char gen] from source: 74.120.14.67, port 49332, Sun, Jul 25, 2021 03:49:33
[DoS attack: Echo char gen] from source: 23.95.114.242, port 45289, Sun, Jul 25, 2021 03:09:21
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Sun, Jul 25, 2021 02:05:14
[DoS attack: Sync flood] from source: 45.129.136.15, port 65529, Sun, Jul 25, 2021 00:41:31
[DoS attack: Echo char gen] from source: 184.105.139.85, port 45875, Sun, Jul 25, 2021 00:35:18
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Sat, Jul 24, 2021 23:14:50
[DoS attack: UDP Scan] from source: 89.248.173.131, port 46402, Sat, Jul 24, 2021 21:20:02
[DoS attack: UDP Scan] from source: 146.88.240.4, port 47124, Sat, Jul 24, 2021 20:47:34
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Sat, Jul 24, 2021 20:14:50
[UPnP set event: DeletePortMapping] from source 192.168.0.2, port 3074, Sat, Jul 24, 2021 20:13:11
[DoS attack: Echo char gen] from source: 170.106.173.40, port 50864, Sat, Jul 24, 2021 19:34:39
[DoS attack: Echo char gen] from source: 146.88.240.4, port 44430, Sat, Jul 24, 2021 17:32:40
[UPnP set event: AddPortMapping] from source 192.168.0.2, port 3074, Sat, Jul 24, 2021 17:17:24
