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Forum Discussion
firefox111
Sep 14, 2021Apprentice
"DoS attack: Fraggle Attack" almost every 10 seconds
Hello. I replaced an aging gateway firewall/router/gateway lately and my Nighthawk X6S has plenty of this Fraggle Attack in its Log. Does anyone know what is this? What port/s does this pertain to...
robatl
Sep 14, 2021Star
It seems to be a netgear or nighthawk issue, so much so that if you google the attack it leads to netgear posts. Most people turn off that alert in their logs from what I found. Turn the alert on if you feel you are under attack, other than that turn it off. It's logging not a feature, your firewall will still work.
- firefox111Sep 14, 2021Apprentice
But the log is reporting that it comes from my firewall/router/gateway! Throughput seems to be unaffected by this Fraggle Attack!
- firefox111Sep 14, 2021Apprentice
My log is now free of Fraggle Attack entries. I disabled DoS attack reporting in the Log.
- michaelkenwardSep 14, 2021Guru - Experienced User
firefox111 wrote:
My log is now free of Fraggle Attack entries. I disabled DoS attack reporting in the Log.
Someone here recently told me I was mad for suggesting that.
Netgear's firmware is great at creating false reports of DoS attacks. Many of them are no such thing.
Search - NETGEAR Communities – DoS attacks
If these events are slowing down a router, that may be because it is using up processor time as it writes the events to the logs. Anything that uses processor power – event logging, QoS management, traffic metering – may cause slowdowns. Whenever people see a log full of that sort of stuff, it is worth disabling logging of DoS attacks and seeing if that reduces the problem. This does not prevent the router from protecting you from the outside world. It just doesn't write the details to the logs.
Some people go so far as to Disable Port Scan and DoS Protection to no ill effect.