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Forum Discussion
Wristlock
Jan 26, 2026Aspirant
how bad is this ?
Nighthawk AX6 6-Stream AX5400 WiFi Router(RAX50) Nighthawk 2.5Gbps Cable Modem (CM2000) connection is slow and unstable and the logs are always dos attacks [DoS attack: RST Scan] from ...
StephenB
Jan 26, 2026Guru - Experienced User
Wristlock wrote:connection is slow and unstable
If you reboot the router, does the connection start off ok? Or is it just as slow right after the restart?
If you remove forwarded ports, anything in the dmz, and disable upnp, does the problem disappear?
If not, then one option is to try saving the config, doing a factory reset of the router, and then restoring the config. If the problem doesn't disappear after the reset, you could try contacting your ISP.
Wristlock
Jan 26, 2026Aspirant
I have rebooted the router and it seems just as slow at restart. I will try disabling upnp, check for any port forwarding and look in dmz, factory reset, then report back.
Are the DoS attacks a concern ? Thank you
- StephenBJan 26, 2026Guru - Experienced User
Wristlock wrote:
Are the DoS attacks a concern ? Thank you
Often not, but in your case you are seeing unexplained performance loss.
- FURRYe38Jan 26, 2026Guru - Experienced User
What devices do you have all connected. The one IP address ACK scan is from Amazon. You might turn OFF all devices that connects to the router save one ethernet PC and see if those UNKNOWNs stop being logged.