NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
C7800 Disconnecting - Need Help Please!
Hey everybody! Sorry to be a bother here, but I'm not really tech savvy and tried to read up on this as much as I could but could use some guidance. So I just bought a C7800 a few months back (even af...
Hey everybody! Sorry to be a bother here, but I'm not really tech savvy and tried to read up on this as much as I could but could use some guidance. So I just bought a C7800 a few months back (even after reading some reviews with intermittent dropping of Xfinity and prayed for the best because its a good router!) and set up my Xfinity internet 800mbps about a month ago. Over the past few weeks, my wife and I, who only each have a laptop, an Iphone, a PS5, and the Xfinity flex box which we use for Hulu + live tv and notice intermittent dropping for about 30 seconds but multiple times a day, and just lots of buffering on everything. Everything is connected wirelessly with nothing close enough to be wired and its about 1500 sq ft so not enough for the internet to be unstable really. I've went on the router after reading many forums about this and this is what I've found. Sorry in advance for the lengthy read but I would really appreciate any guidance or insight at all, and please imagine I know nothing and walk me through baby steps what you advise 🙂 thanks again everyone!
1) I was a reading a forum from Fury I believe who recommended to change channels for the 2.4 and the 5 ghz connection, and I manually changed the channels to a network that's less busy (I set up two different ones and have no guest network in place at all)
2) I read something about the downstream/upstream but that seems to be alright here from my limited knowledge? Downstream in photo attached
| <tabindex=-1>Upstream Bonded Channels</tabindex=-1> | ||||||||||||||||||||||||||||||
|
3) I've read a lot about the DOS attacks on Xfinity, I guess they're called, but never really found a solution. This is what I'm seeing on my log just over the past few days
[admin login] from source 192.168.0.3, Fri, Oct 28, 2022 19:42:06
[DoS attack: UDP Scan] from source: 185.94.111.1, port 35972, Fri, Oct 28, 2022 19:39:23
[DoS attack: UDP Scan] from source: 69.162.78.10, port 58736, Fri, Oct 28, 2022 18:51:41
[DoS attack: UDP Scan] from source: 185.94.111.1, port 45929, Fri, Oct 28, 2022 18:18:19
[DoS attack: Echo char gen] from source: 146.88.240.4, port 56154, Fri, Oct 28, 2022 17:35:30
[DoS attack: UDP Scan] from source: 69.162.78.10, port 54344, Fri, Oct 28, 2022 15:31:13
[DoS attack: Smurf attack] from source: 73.249.23.58, Fri, Oct 28, 2022 13:06:07
[DoS attack: Sync flood] from source: 60.161.81.116, port 37381, Fri, Oct 28, 2022 13:04:55
[DoS attack: Smurf attack] from source: 73.249.23.58, Fri, Oct 28, 2022 12:11:23
[DoS attack: Smurf attack] from source: 73.249.23.58, Fri, Oct 28, 2022 11:47:48
[DoS attack: Smurf attack] from source: 98.216.110.139, Fri, Oct 28, 2022 11:17:07
[DoS attack: Echo char gen] from source: 89.248.165.22, port 58446, Fri, Oct 28, 2022 08:04:55
[DoS attack: Echo char gen] from source: 144.217.24.0, port 32345, Fri, Oct 28, 2022 07:50:21
[DoS attack: Smurf attack] from source: 73.238.180.159, Fri, Oct 28, 2022 05:15:42
[DoS attack: Smurf attack] from source: 24.63.242.242, Fri, Oct 28, 2022 04:58:39
[DoS attack: Smurf attack] from source: 73.238.250.223, Fri, Oct 28, 2022 04:47:55
[DoS attack: Smurf attack] from source: 73.17.27.142, Fri, Oct 28, 2022 04:36:16
[DoS attack: Echo char gen] from source: 94.102.61.7, port 48616, Fri, Oct 28, 2022 04:34:37
[DoS attack: Smurf attack] from source: 73.238.182.3, Fri, Oct 28, 2022 04:26:10
[DoS attack: Smurf attack] from source: 98.216.134.128, Fri, Oct 28, 2022 04:12:19
[DoS attack: Smurf attack] from source: 73.149.226.85, Fri, Oct 28, 2022 04:01:06
[DoS attack: Smurf attack] from source: 73.238.242.16, Fri, Oct 28, 2022 03:45:26
[DoS attack: Smurf attack] from source: 98.216.130.248, Fri, Oct 28, 2022 03:34:18
[DoS attack: Smurf attack] from source: 73.238.242.151, Fri, Oct 28, 2022 03:23:51
[DoS attack: Smurf attack] from source: 98.216.132.53, Fri, Oct 28, 2022 03:12:09
[DoS attack: Smurf attack] from source: 73.249.23.58, Fri, Oct 28, 2022 02:56:37
[DoS attack: Smurf attack] from source: 98.216.107.92, Fri, Oct 28, 2022 02:46:07
[DoS attack: Smurf attack] from source: 73.249.35.145, Fri, Oct 28, 2022 02:31:09
[DoS attack: Smurf attack] from source: 73.17.26.18, Fri, Oct 28, 2022 02:18:26
[DoS attack: Smurf attack] from source: 73.249.46.124, Fri, Oct 28, 2022 02:07:23
[DoS attack: Smurf attack] from source: 98.216.200.16, Fri, Oct 28, 2022 01:44:38
[DoS attack: Smurf attack] from source: 73.149.225.44, Fri, Oct 28, 2022 01:20:28
[DoS attack: Smurf attack] from source: 73.16.105.207, Fri, Oct 28, 2022 01:08:26
[DoS attack: Echo char gen] from source: 183.136.225.14, port 14565, Fri, Oct 28, 2022 01:06:02
[DoS attack: Smurf attack] from source: 73.249.47.78, Fri, Oct 28, 2022 00:58:17
[DoS attack: Smurf attack] from source: 24.63.243.91, Fri, Oct 28, 2022 00:47:44
[DoS attack: Smurf attack] from source: 73.238.220.239, Fri, Oct 28, 2022 00:26:19
[DoS attack: Smurf attack] from source: 73.149.225.65, Fri, Oct 28, 2022 00:16:10
[DoS attack: Smurf attack] from source: 73.17.157.38, Fri, Oct 28, 2022 00:05:03
[DoS attack: Smurf attack] from source: 73.149.224.202, Thu, Oct 27, 2022 23:47:48
[DoS attack: Smurf attack] from source: 98.216.107.91, Thu, Oct 27, 2022 23:32:36
[DoS attack: Smurf attack] from source: 73.249.34.70, Thu, Oct 27, 2022 23:22:33
[DoS attack: Smurf attack] from source: 73.249.20.52, Thu, Oct 27, 2022 23:12:30
[DoS attack: Smurf attack] from source: 73.238.180.88, Thu, Oct 27, 2022 22:46:30
[DoS attack: Smurf attack] from source: 73.4.99.32, Thu, Oct 27, 2022 22:30:03
[admin login] from source 192.168.0.17, Thu, Oct 27, 2022 21:17:42
[admin login] from source 192.168.0.17, Thu, Oct 27, 2022 21:05:34
[admin login] from source 192.168.0.17, Thu, Oct 27, 2022 20:46:57
[DoS attack: UDP Scan] from source: 146.88.240.4, port 35821, Thu, Oct 27, 2022 20:46:20
[DHCP IP: (192.168.0.9)] to MAC address f0:46:3b:7f:96:ec, Thu, Oct 27, 2022 20:36:42
[DoS attack: Smurf attack] from source: 98.216.130.232, Thu, Oct 27, 2022 20:28:27
[admin login] from source 192.168.0.17, Thu, Oct 27, 2022 20:24:51
[admin login] from source 192.168.0.17, Thu, Oct 27, 2022 20:11:34
[DoS attack: Echo char gen] from source: 184.105.247.220, port 8717, Thu, Oct 27, 2022 19:47:06
[Internet connected] IP address: 73.238.180.114, Thu, Oct 27, 2022 19:37:57
[Internet connected] IP address: 73.238.180.114, Thu, Oct 27, 2022 19:37:57
[Internet connected] IP address: 73.238.180.114, Thu, Oct 27, 2022 19:37:57
[Internet connected] IP address: 73.238.180.114, Thu, Oct 27, 2022 19:37:57
[Internet connected] IP address: 73.238.180.114, Thu, Oct 27, 2022 19:37:57
[Internet disconnected] Thu, Oct 27, 2022 19:36:40
[Internet disconnected] Thu, Oct 27, 2022 19:36:40
[DoS attack: Smurf attack] from source: 98.216.110.139, Thu, Oct 27, 2022 19:20:07
[DoS attack: UDP Scan] from source: 92.204.144.198, port 56248, Thu, Oct 27, 2022 17:55:20
[DoS attack: Echo char gen] from source: 146.88.240.4, port 41582, Thu, Oct 27, 2022 17:36:07
[DoS attack: UDP Scan] from source: 106.75.37.168, port 58914, Thu, Oct 27, 2022 16:23:29
[DoS attack: UDP Scan] from source: 3.7.5.126, port 55093, Thu, Oct 27, 2022 11:48:33
[DHCP IP: (192.168.0.20)] to MAC address ee:e8:c7:6c:71:4c, Thu, Oct 27, 2022 10:44:16
[DoS attack: Smurf attack] from source: 98.216.133.133, Thu, Oct 27, 2022 07:45:55
[DoS attack: UDP Scan] from source: 94.102.56.4, port 57426, Thu, Oct 27, 2022 07:42:52
[DoS attack: Echo char gen] from source: 80.82.77.139, port 29921, Thu, Oct 27, 2022 06:41:30
[DoS attack: Echo char gen] from source: 104.156.155.12, port 48407, Thu, Oct 27, 2022 06:03:59
[DoS attack: UDP Scan] from source: 94.102.56.4, port 59726, Thu, Oct 27, 2022 05:55:41
[DoS attack: Smurf attack] from source: 73.238.180.159, Thu, Oct 27, 2022 05:15:46
[DoS attack: Smurf attack] from source: 73.238.242.10, Thu, Oct 27, 2022 05:03:47
[DoS attack: Smurf attack] from source: 73.238.220.31, Thu, Oct 27, 2022 04:53:43
[DoS attack: Smurf attack] from source: 73.249.60.34, Thu, Oct 27, 2022 04:43:30
[DoS attack: Smurf attack] from source: 73.89.232.208, Thu, Oct 27, 2022 04:32:18
[DoS attack: Smurf attack] from source: 98.216.133.133, Thu, Oct 27, 2022 04:21:12
[DoS attack: Echo char gen] from source: 104.156.155.12, port 48407, Thu, Oct 27, 2022 04:13:44
[DoS attack: Smurf attack] from source: 73.149.226.85, Thu, Oct 27, 2022 04:00:35
[DoS attack: Smurf attack] from source: 98.216.134.128, Thu, Oct 27, 2022 03:45:10
[DoS attack: Smurf attack] from source: 98.216.130.248, Thu, Oct 27, 2022 03:34:18
[DoS attack: Smurf attack] from source: 73.238.242.151, Thu, Oct 27, 2022 03:24:07
[DoS attack: Smurf attack] from source: 98.216.132.53, Thu, Oct 27, 2022 03:11:06
[DoS attack: Echo char gen] from source: 45.148.10.241, port 12284, Thu, Oct 27, 2022 03:04:16
[DoS attack: Smurf attack] from source: 73.249.23.58, Thu, Oct 27, 2022 02:56:36
[DoS attack: Smurf attack] from source: 98.216.107.92, Thu, Oct 27, 2022 02:46:06
[DoS attack: Smurf attack] from source: 73.249.35.145, Thu, Oct 27, 2022 02:31:09
[DoS attack: Smurf attack] from source: 73.17.26.18, Thu, Oct 27, 2022 02:18:25
[DoS attack: Smurf attack] from source: 73.249.46.124, Thu, Oct 27, 2022 02:07:21
[DoS attack: Smurf attack] from source: 98.216.200.16, Thu, Oct 27, 2022 01:45:39
[DoS attack: Smurf attack] from source: 73.149.225.44, Thu, Oct 27, 2022 01:20:24
[DoS attack: Smurf attack] from source: 73.16.105.207, Thu, Oct 27, 2022 01:08:15
[DoS attack: Smurf attack] from source: 73.238.225.225, Thu, Oct 27, 2022 00:57:40
[DoS attack: Smurf attack] from source: 24.63.243.91, Thu, Oct 27, 2022 00:47:37
[DoS attack: Smurf attack] from source: 73.238.220.239, Thu, Oct 27, 2022 00:26:18
[DoS attack: Echo char gen] from source: 172.105.111.228, port 40041, Thu, Oct 27, 2022 00:23:12
[DoS attack: Smurf attack] from source: 73.149.225.65, Thu, Oct 27, 2022 00:16:10
[DoS attack: Smurf attack] from source: 73.17.157.38, Thu, Oct 27, 2022 00:05:02
[DoS attack: Smurf attack] from source: 73.149.224.202, Wed, Oct 26, 2022 23:47:47
[DoS attack: Smurf attack] from source: 98.216.107.91, Wed, Oct 26, 2022 23:32:42
[DoS attack: Smurf attack] from source: 73.249.34.70, Wed, Oct 26, 2022 23:22:31
[DoS attack: Smurf attack] from source: 73.249.20.52, Wed, Oct 26, 2022 23:12:30
[DoS attack: Smurf attack] from source: 73.238.180.88, Wed, Oct 26, 2022 22:45:54
[DoS attack: Smurf attack] from source: 73.4.99.32, Wed, Oct 26, 2022 22:30:04
[DoS attack: Echo char gen] from source: 89.248.165.70, port 40654, Wed, Oct 26, 2022 22:14:19
[DoS attack: Sync flood] from source: 60.161.81.116, port 45401, Wed, Oct 26, 2022 22:11:14
[DoS attack: UDP Scan] from source: 146.88.240.4, port 46224, Wed, Oct 26, 2022 21:12:41
[DoS attack: Smurf attack] from source: 98.216.130.232, Wed, Oct 26, 2022 20:28:27
[DHCP IP: (192.168.0.18)] to MAC address ce:2c:18:f0:ef:b3, Wed, Oct 26, 2022 20:24:41
[DoS attack: Echo char gen] from source: 94.102.61.29, port 54637, Wed, Oct 26, 2022 18:59:47
[DoS attack: Echo char gen] from source: 74.82.47.26, port 36038, Wed, Oct 26, 2022 18:46:43
[DHCP IP: (192.168.0.6)] to MAC address 98:8d:46:97:af:fe, Wed, Oct 26, 2022 17:54:15
[DoS attack: Echo char gen] from source: 146.88.240.4, port 39767, Wed, Oct 26, 2022 17:35:36
[DHCP IP: (192.168.0.16)] to MAC address 82:f9:72:0b:81:e2, Wed, Oct 26, 2022 17:32:17
[DHCP IP: (192.168.0.3)] to MAC address 84:14:4d:00:ce:81, Wed, Oct 26, 2022 15:32:22
[DoS attack: UDP Scan] from source: 185.94.111.1, port 48634, Wed, Oct 26, 2022 15:28:26
[DoS attack: Echo char gen] from source: 128.14.209.238, port 18114, Wed, Oct 26, 2022 15:16:31
[DoS attack: UDP Scan] from source: 94.102.56.4, port 59726, Wed, Oct 26, 2022 14:54:57
[DHCP IP: (192.168.0.17)] to MAC address 6e:f0:ec:05:10:a0, Wed, Oct 26, 2022 14:40:32
[DoS attack: Echo char gen] from source: 107.189.2.134, port 44819, Wed, Oct 26, 2022 14:06:02
[DoS attack: Echo char gen] from source: 104.152.52.242, port 55981, Wed, Oct 26, 2022 13:26:33
[DoS attack: UDP Scan] from source: 104.152.52.242, port 55981, Wed, Oct 26, 2022 13:26:21
[DoS attack: Sync flood] from source: 60.161.81.116, port 41455, Wed, Oct 26, 2022 13:17:12
[Time synchronized with NTP server] Wed, Oct 26, 2022 11:59:28
[DHCP IP: (192.168.0.9)] to MAC address f0:46:3b:7f:96:ec, Wed, Dec 31, 1969 16:03:53
[Internet connected] IP address: 73.238.180.114, Wed, Dec 31, 1969 16:03:03
[DHCP IP: (192.168.0.19)] to MAC address 64:1c:b0:b7:63:59, Wed, Dec 31, 1969 16:01:03
[Initialized, firmware version: V6.01.07] Thu, Jan 01, 1970 00:00:14
[Internet disconnected] Wed, Oct 26, 2022 11:48:01
[Internet disconnected] Wed, Oct 26, 2022 11:48:01
[Internet connected] IP address: 73.238.180.114, Wed, Oct 26, 2022 10:26:37
[Internet disconnected] Wed, Oct 26, 2022 10:22:58
[Internet disconnected] Wed, Oct 26, 2022 10:22:58
[Internet connected] IP address: 73.238.180.114, Wed, Oct 26, 2022 09:59:25
[Internet disconnected] Wed, Oct 26, 2022 09:56:29
[Internet disconnected] Wed, Oct 26, 2022 09:56:29
[DoS attack: Echo char gen] from source: 46.19.138.166, port 51442, Wed, Oct 26, 2022 09:50:37
[DoS attack: UDP Scan] from source: 139.59.111.160, port 50675, Wed, Oct 26, 2022 09:01:11
[DoS attack: Smurf attack] from source: 98.216.110.139, Wed, Oct 26, 2022 07:18:52
[DoS attack: Smurf attack] from source: 73.238.180.159, Wed, Oct 26, 2022 05:15:44
[DoS attack: Echo char gen] from source: 193.163.125.192, port 47255, Wed, Oct 26, 2022 05:08:41
[DoS attack: Smurf attack] from source: 73.249.63.60, Wed, Oct 26, 2022 04:58:07
[DoS attack: Smurf attack] from source: 73.238.250.223, Wed, Oct 26, 2022 04:47:58
[DoS attack: UDP Scan] from source: 89.248.165.250, port 44242, Wed, Oct 26, 2022 04:37:22
[DoS attack: Smurf attack] from source: 73.17.27.142, Wed, Oct 26, 2022 04:36:16
[DoS attack: Smurf attack] from source: 98.216.133.133, Wed, Oct 26, 2022 04:21:12
[DoS attack: Smurf attack] from source: 73.149.226.85, Wed, Oct 26, 2022 04:03:02
[DoS attack: Smurf attack] from source: 73.16.104.98, Wed, Oct 26, 2022 03:51:50
[DoS attack: Smurf attack] from source: 73.249.22.133, Wed, Oct 26, 2022 03:41:01
[DoS attack: Smurf attack] from source: 73.4.228.217, Wed, Oct 26, 2022 03:28:43
[DoS attack: Smurf attack] from source: 98.216.132.53, Wed, Oct 26, 2022 03:11:01
[DoS attack: Smurf attack] from source: 73.249.23.58, Wed, Oct 26, 2022 02:54:41
[DoS attack: Smurf attack] from source: 73.238.242.151, Wed, Oct 26, 2022 02:44:30
[DoS attack: Smurf attack] from source: 73.249.35.145, Wed, Oct 26, 2022 02:31:08
[DoS attack: Smurf attack] from source: 73.17.26.18, Wed, Oct 26, 2022 02:17:25
[DoS attack: Smurf attack] from source: 73.249.46.124, Wed, Oct 26, 2022 02:07:20
[DoS attack: Smurf attack] from source: 98.216.200.16, Wed, Oct 26, 2022 01:44:39
[DoS attack: Smurf attack] from source: 73.149.225.44, Wed, Oct 26, 2022 01:20:27
[DoS attack: Smurf attack] from source: 73.16.105.207, Wed, Oct 26, 2022 01:08:20
[DoS attack: Smurf attack] from source: 73.238.225.225, Wed, Oct 26, 2022 00:57:40
[DoS attack: Smurf attack] from source: 24.63.243.91, Wed, Oct 26, 2022 00:47:37
[DoS attack: Smurf attack] from source: 73.238.220.239, Wed, Oct 26, 2022 00:26:06
[DoS attack: Smurf attack] from source: 73.149.225.65, Wed, Oct 26, 2022 00:14:49
[DoS attack: Smurf attack] from source: 73.17.157.38, Wed, Oct 26, 2022 00:04:15
The event logs help more than just checking the logs.
But you do have errors in your line from just the connections page.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.
- Hey Plemans! Thanks for your help! So just for reference, I don't really know what amplifiers or signal attenuators are but I just used the original coax cable that Xfinity provided to plug one end into the wall, and one end into the C7800 which is only about a 2 ft cable. Do you recommend trying a different cable? This one is brand new from them but happy to try! Is there an issue you see that can be corrected by the ISP or something that I can request from Xfinity, whether they charge or not, based on the logs? I also attached the event logs for you that you asked for! Thanks again everyone!
