NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

Parkourpotato's avatar
Parkourpotato
Aspirant
Jul 13, 2016

Internet connection doesn't work for a few seconds then comes back

   Hello everyone, I'm not sure if this is a problem with my internet service provider or the actual modem, but I've been having this problem ever since I switched to this new modem. I had an old one...
Troubleshooting
DarrenM's avatar
DarrenM
Sr. NETGEAR Moderator
Jul 19, 2016

Hello parkourpotato

 

You will have to log into your modem after you notice the issue happen and look at the logs and post them here this may help narrow down the issue.

 

DarrenM

Parkourpotato's avatar
Parkourpotato
Aspirant
Jul 21, 2016

Ok update on the issue. Now instead of it occuring every few minutes it occurs every few seconds. Here are the logs:

DescriptionCountLast OccurrenceTargetSource
[TCP- or UDP-based Port Scan]4Sun Jul 17 08:04:00 201668.12.174.141:5624468.105.28.11:53
[FAILURE: User interface login]1Sun Jul 17 08:08:00 2016192.168.0.1:80192.168.0.4:50462
[TCP- or UDP-based Port Scan]3Sun Jul 17 10:07:41 201668.12.174.141:6189268.105.28.11:53
[FAILURE: User interface login]1Sun Jul 17 10:11:23 2016192.168.0.1:80192.168.0.4:49839
[TCP- or UDP-based Port Scan]91Mon Jul 18 01:31:20 201668.12.174.141:5915468.105.28.11:53
[Time Of Day established]1Mon Jul 18 07:54:47 20160.0.0.0:00.0.0.0:0
[Public Network Interface up]1Mon Jul 18 07:55:01 20160.0.0.0:00.0.0.0:0
[Firewall Up]1Mon Jul 18 07:55:01 20160.0.0.0:00.0.0.0:0
[Teardrop or derivative]16Mon Jul 18 07:55:14 2016239.255.255.250:65535192.168.0.10:65535
[TCP- or UDP-based Port Scan]15Mon Jul 18 13:00:16 201668.12.174.141:5552868.105.29.11:53
[FAILURE: User interface login]1Mon Jul 18 13:02:31 2016192.168.0.1:80192.168.0.5:63794
[SUCCESS: User interface login]1Mon Jul 18 13:02:38 2016192.168.0.1:80192.168.0.5:63814
[TCP- or UDP-based Port Scan]104Tue Jul 19 13:58:08 201668.12.174.141:5098668.105.28.11:53
[FAILURE: User interface login]1Tue Jul 19 14:01:24 2016192.168.0.1:80192.168.0.5:53258
[SUCCESS: User interface login]1Tue Jul 19 14:01:31 2016192.168.0.1:80192.168.0.5:53265
[TCP- or UDP-based Port Scan]18Tue Jul 19 17:55:14 201668.12.174.141:4394368.105.28.11:53
[FAILURE: User interface login]1Tue Jul 19 17:56:46 2016192.168.0.1:80192.168.0.4:54581
[TCP- or UDP-based Port Scan]68Wed Jul 20 15:00:21 201668.12.174.141:5962868.105.28.11:53
[FAILURE: User interface login]1Wed Jul 20 15:16:51 2016192.168.0.1:80192.168.0.4:49790
[TCP- or UDP-based Port Scan]70Thu Jul 21 12:37:35 201668.12.174.141:6105668.105.28.11:53
[Time Of Day established]1Thu Jul 21 13:50:55 20160.0.0.0:00.0.0.0:0
[Public Network Interface up]1Thu Jul 21 13:51:10 20160.0.0.0:00.0.0.0:0
[Firewall Up]1Thu Jul 21 13:51:10 20160.0.0.0:00.0.0.0:0
[Teardrop or derivative]2Thu Jul 21 13:51:24 2016239.255.255.250:65535192.168.0.10:65535
[TCP- or UDP-based Port Scan]1Thu Jul 21 13:51:24 201668.12.174.141:5457268.105.28.11:53
[Teardrop or derivative]14Thu Jul 21 13:51:27 2016239.255.255.250:65535192.168.0.10:65535
[FAILURE: User interface login]1Thu Jul 21 13:56:41 2016192.168.0.1:80192.168.0.4:49846
[TCP- or UDP-based Port Scan]1Thu Jul 21 13:59:05 201668.12.174.141:6297568.105.28.11:53
[FAILURE: User interface login]2Thu Jul 21 14:01:23 2016192.168.0.1:80192.168.0.5:55224
[SUCCESS: User interface login]1Thu Jul 21 14:01:29 2016192.168.0.1:80192.168.0.5:55226
  • DarrenM's avatar
    DarrenM
    Sr. NETGEAR Moderator
    Jul 26, 2016

    Hello Parkourpotato

     

    You could try to factory reset the modem but you will have to set it up again with all your settings it could be some bad setting causing the issues.

     

    DarrenM

  • James_G's avatar
    James_G
    Aspirant
    Jul 27, 2016

    You are getting port scans from another user on the Cox network (TCP- or UDP-based Port Scan and Teardrop or derivative). These could be causing your speed to drop. Here is a similar post on the Netgear community having the same connect problems and more:

     

    https://community.netgear.com/t5/Cable-Modems-Routers/DoS-attack-Teardrop-or-derivative-Ping-of-Death-strange-non-DHCP/td-p/1067681

     

    It also appears someone else is trying to log into your modem (FAILURE: User interface login) and failing. Unless you tried and failed, another one of your devices may be trying to access it. Could be another household user, an outside hacker or a virus on one of your devices.