Windows 10: Unknown computers detected on my network

So i have a Tp-Link mr3420 running dd-wrt. On my windows 10 machine in the network tab i can see computers that are not mine, hovever on my router in the dhcp table i cannot see any other computers than my owns. On my linux machine i do not see the unknown computers that windows detects. And they only appear at certain times. I have not joined any homegroup. So why do i see these computers ? there are 2 computers that are not mine and i cannot find anything on the internet about this.

Please help me

thx

:)

 

Unknown Computer on My Computer's Network

Amazon Echo..... I had the same, properties shows 'Manufacturer - Amazon'

 

Unknown Computer on My Computer's Network

I'm a home user of Windows 10 Pro running on a Dell Desktop using Windows Defender.

This all started a couple months ago when I began getting notices from Comcast that I had data overages. Comcast advised me to change passwords on my wifi, which I did and the problem persisted. I tracked the culprit to something going on in my desktop.
I've been diligent about disabling OneDrive; deactivating Cortana and live tiles and disabling anything that looks like it syncs, runs background apps, or collects privacy information. I set my connection to a metered connection.

In the process of tracking down my bandwidth problem, I clicked on Network. It showed my computer, my Roku and the cable modem, but it also shows a computer called full_biscuit. It will be there for a few seconds, then disappear, then come back. I don't
know if this has anything to do with my outrageous bandwidth problems, but I would like it off my network, nonetheless. How do I get rid of it?

I'm not an IT professional, so would appreciate an answer in terms I can understand Thanks for your help. Attached is the info:

***Personal information deleted by the moderator. Kindly check the Microsoft Community Frequently Asked Questions for
more information on how you can protect your privacy.***

 

Any SSID that is detected will be displayed in the list of available wireless access points available to you.
No idea why you don't see them in Linux as well. should be the same.

The router DHCP table will only show entries for devices it provided IPs for.

My laptop shows 8 at the moment, two of which are mine.

 

If you are talking about a Home network, one for which you have enabled Wireless access, a good Windows app to keep check on this is Who's on my WiFi. That allows you to scan for all devices on the network, will show you the Mac address of each device -- and, what's really good -- will allow you to remove and prevent access by specific device. If these are machine accessing your network, this is a good way to get rid of them.

There may be free alternatives to this, app, I haven't checked.

 

I am going to go out on a limb and say that they are most likely UPnP DLNA devices (ie Blu-Ray player, Xbox, Streaming device). Anything connected to the network that is not necessarily a computer is an intruder. People forget that their devices that they can view Netflix, etc. on, will show up in the Windows devices, but in order to show on the Linux devices, you have to have installed DLNA & UPnP software.