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spencerx's avatar
spencerx
Follower
Nov 20, 2015

C6300 DoS Attacks

I've been having some awful lag spikes/ping issues for a while now. I've pretty much had everything done possible, which led me to buying this router/modem and having a tech come out and fix a bunch of stuff to no avail. 

 

The only thing left is when I check my logs I see:

 

DescriptionCountLast OccurrenceTargetSource
[UPnP set event: urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1#GetCommonLinkProperties] from source 192.168.0.201Friday, 20 Nov 2015 17:43:280.0.0.00.0.0.0
[DoS attack] AIF:Dropped INPUT packet: PROTO:ICMPv6 SPT: DPT:1Friday, 20 Nov 2015 17:43:27ff02:0000:0000:0000:0000:0000:0000:0001fe80:0000:0000:0000:0201:5cff:fe4b:f441
[admin login] from source 192.168.0.201Friday, 20 Nov 2015 17:43:260.0.0.0192.168.0.20
[DoS attack] AIF:Dropped INPUT packet: PROTO:ICMPv6 SPT: DPT:1Friday, 20 Nov 2015 17:43:24ff02:0000:0000:0000:0000:0000:0000:0001fe80:0000:0000:0000:0201:5cff:fe4b:f441
[DoS attack] AIF:Dropped INPUT packet: PROTO:TCP SPT:443 DPT:593901Friday, 20 Nov 2015 17:43:2267.240.23.5465.52.108.184
[DoS attack] AIF:Dropped INPUT packet: PROTO:ICMPv6 SPT: DPT:7Friday, 20 Nov 2015 17:43:21ff02:0000:0000:0000:0000:0000:0000:0001fe80:0000:0000:0000:0201:5cff:fe4b:f441

 

yes, I have disabled IPv6 for anyone who would suggest that. and this is the event logs:

 

Nov 16 20:04:53 2015Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted
Nov 16 20:04:54 2015Critical (3)No Ranging Response received - T3 time-out
Nov 18 01:14:14 2015Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Nov 18 01:14:17 2015Critical (3)No Ranging Response received - T3 time-out
Nov 18 01:14:37 2015Critical (3)Ranging Request Retries exhausted
Nov 18 01:14:37 2015Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted
Nov 18 01:14:37 2015Warning (5)TCS Partial Service
Nov 19 11:05:54 2015Critical (3)SYNC Timing Synchronization failure - Loss of Sync
Nov 19 11:05:59 2015Warning (5)Lost MDD Timeout
Nov 19 11:06:02 2015Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Nov 19 12:23:35 2015Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Nov 19 14:22:37 2015Critical (3)No Ranging Response received - T3 time-out
Nov 20 14:00:32 2015Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Nov 20 14:08:54 2015Critical (3)No Ranging Response received - T3 time-out
Nov 20 14:41:42 2015Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1

 

Not really sure, I contacted Time Warner a bunch of times, where they sent a tech out and I'm still having issues. Wasn't sure if it had anything to do with this. 

Steam levels as well:

 

ProcedureStatusComment
Acquire Downstream Channel555000000 HzLocked
Connectivity StateOkOperational
Boot State----
Configuration File----
SecurityEnabledBPI+

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUnCorrectables
1LockedQAM 2561555000000 Hz-0.5 dBmV38.9 dB60
2LockedQAM 2562561000000 Hz-0.5 dBmV38.9 dB40
3LockedQAM 2563567000000 Hz0.0 dBmV38.9 dB00
4LockedQAM 2564573000000 Hz0.0 dBmV38.6 dB00
5LockedQAM 2565579000000 Hz0.0 dBmV38.6 dB00
6LockedQAM 2566585000000 Hz0.0 dBmV38.6 dB00
7LockedQAM 2567591000000 Hz0.2 dBmV38.9 dB00
8LockedQAM 2568597000000 Hz0.5 dBmV38.6 dB00
9Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
10Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
11Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
12Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
13Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
14Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
15Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
16Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedTDMA92560 Ksym/sec19400000 Hz41.8 dBmV
2LockedATDMA105120 Ksym/sec24200000 Hz41.5 dBmV
3LockedATDMA115120 Ksym/sec30600000 Hz42.0 dBmV
4LockedATDMA122560 Ksym/sec37000000 Hz41.5 dBmV

1 Reply

  • JamesGL's avatar
    JamesGL
    NETGEAR Employee Retired

    Hi spencerx,

     

    Base on the logs you have provided, it shows that the problem is mostly with your ISP. I would suggest if you will contact your ISP to provide you their own modem for testing purposes. This is to isolate the issue check the line of your connection.