NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
itsthelag
Apr 21, 2020Aspirant
DoS Attacks - from varying sources and ports.
Hi There, Since all the working from home started - I've noticed sporadic interruptions while using Video conferencing and while gaming. I will get ping spikes for about 3-5 mins and then it's prett...
CrimpOn
Apr 21, 2020Guru - Experienced User
I have been collecting the logs from two Orbi's (one for over a year, one for 8 months). These logs record these "DoS Attacks" every day, and this is entirely normal. Orbi contains a firewall for a purpose. It rejects attempts to connect and has an option to record "interesting things" in the Orbi log. People have posted comments indicating that Orbi is to "liberal" at classifying random connection attempts as "attacks".
The user can "Disable Port Scan and DoS Protection" on the Orbi web interface, Setup, WAN Setup page. I believe this will stop the system from spending processing time recording and classifying things and writing them to the log. I am not confident that there will be a noticable improvement in performance.
Orbi's have a "public IP address", just as we have "public" street addresses and phone numbers. It is almost trivial to create a program which will "scan" IP addresses looking for systems that respond. This has been happening since the internet was created. It's like RoboCalls that just dial every possible phone number hoping that some of them will answer. I can set my phone to ignore certain calls and not ring, but that doesn't make the calls go away.
Since the service problems are serious, I would certainly try checking that box first.
itsthelag
Apr 21, 2020Aspirant
Thank you for the advice - checking that won't leave me open to other security issues?
I downloaded a tool called ping plotter, and I really just don't know what i'm looking at - are these ping/latency spikes unusual?
- FURRYe38Apr 21, 2020Guru - Experienced User
No, those are not good
Did you test pings with a wired PC connected directly connected to the modem? Not with the RBR connected.
Have the ISP check the signal and line quality UP to the modem.
Be sure there are not coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.- itsthelagApr 21, 2020Aspirant
Unfortunately, I don't have a way to connect a PC to the modem directly, I use a Surface book pro, which doesn't have an ethernet port. Does it look like the ISP is causing the issue?
I had XFINITY refresh the gateway signal - I will try to get them to look at this more in depth. No coax splitters - direct from the wall into the modem. Everything was working fine until last week when this started happening. I've never had these issues before.
- FURRYe38Apr 21, 2020Guru - Experienced User
Does your Surface have a USB port? If so, you might check into getting a USB to LAN adapter. Then you can connect it to the ISP Modem and test again. Need to rule out the RBR or modem.
If this was not a problem up to that point, then possible something on the ISP side.