Possible DOS or brute force attack on my router?

Hello everyone,

Here is my broadband quality monitor overview of my router:

https://www.thinkbroadband.com/broadband/monitoring/...

I have these long yellow spikes since 2-3 weeks ago, at least.

I have restarted my router many times, but the yellow spikes remain.

Is it a DOS or brute force attack?

Thank you.

Definitely to your router? Not to a client PC on your LAN? 60ms minimum latency looks high and the small % of dropped packets does not look too good.

Which ISP are you with? My own thought is that it is just a poor quality connection and while I wouldn't rule out DOS, I do doubt it. Why would anyone want to DOS you?

Are you in the UK or somewhere else? The Thinkbroadband site and systems are in the UK. If you are elsewhere the tool works but reading the results is different and would explain the large amount of green.

Yellow spikes can often be just some makes of router deciding not to respond very quickly to the ping request, and most likely is no issue at all.

(This is not a traffic graph, a DDOS would likely show as red as it would block the pings)

I am in Greece.

That explains the minimum latency at 60ms, your distance is quite a long way from the UK and I think Thinkbroadband has the servers in London data centres.

The spikes however are valid but depending on the make of router that the BQM is pinging, could be simply the router deciding to do something else instead of responding. My old Draytek did that. My current ASUS router is better at responding 😁

The spikes on my connection are due to how coax cable broadband works in the UK, when I was on DSL (FTTC in UK) I didn’t get those spikes.

Edited by jchamier (Wed 16-Jul-25 19:57:39)