Windows 10: Unknown Device on Network - In This Case, Bonjour

So, there are numerous threads on this subject and I don't believe it can answered in a way that fits every possible scenario. There is no cure-all answer because there are so many variables.


Recently, I found an answer to a strange device that is presently on my network, but didn't list a MAC address in my Check Point 730 NGTP's network object table.


I'm not an Apple person, but I did give up on Android in favor of the iPhone. Hence, I'm taking hard lessons on how Apple intrudes into everyone's space. Also, because I recently deployed a home automation system running on SmartThings, I've been a bit sloppy and have everything on the same subnet. I will be changing this very soon.


I was able to identify this unknown network device by installing the Apple Store app, Network Analyzer (how original...), on my iPhone and the object was shown to have Bonjour services.


Within iOS, Bonjour has created it's own network object and is running a base of 3 services:

• _sftp-ssh._tcp
  • Secure File Transfer Protocol over SSH (via port 22)
• _ssh._tcp
  • SSH Remote Login Protocol (via port 22)
• _workstation._tcp
  • Workgroup Manager (via port 9) - WTH; the audacity!

Furthermore, because I have WD MyCloud and WDTV devices on my network there were 2 more services running.

(The following are an approximation. I failed to get a screenshot and unwilling to let it happen again, as I killed my WD NAS due to Western Digital being unwilling or unable to keep the backdoor shut in their code - which is well-documented on the web).

• _wd_2go
• _mycloud_

I found my iPhone IP connecting to both WD devices every few minutes, as well as attempting to reach an external url that my Check Point filtering rules have blocked as malicious. My hunch is that Bonjour was hacked by an offending iPhone app to access the existing hack in the WD NAS devices, and possibly I haven't run that app since I reset the iPhone's network settings. I really don't have the time or expertise to work through it, so I'm just going to buy a non-WD NAS.


All that said, I still have an active network device created by Bonjour. I'm getting ready to block it's IP address on internal traffic and see what turns up in my Check Point security log.

:)

 

Network devices listed under Unknown in Device Manager


I have a Dell Inspiron M731R laptop upgraded from Windows 8.1 to Windows 10 Home 64-Bit that suddenly quit connecting to the home network. Was using wireless, so switched to an Ethernet cable, but still no luck. I just discovered that ALL of the network-related devices are now listed under an "Unknown" tab in the Device Manager. A check of properties of each item in that folder says they are all working properly, but that obviously isn't the case. I tried uninstalling each of the 4 items, but when they are recognized again they still show up under the Unknown tab. Any suggestions would be welcome.

 

X800 GTO2 = Unknown Device

I flashed the BIOS on my X800 GTO2 last night and it is listed in the Device Manager as an Unknown Device. Is this normal?

 

unknown devices appears in networks and devices

Hi,



Thank you for writing to Microsoft Community Forums.



This issue could be caused if there was device connected to the computer previously or if there are currently any device connected to the system.



You can try the methods below and check if it fixes the issue.



Method 1: Check of WIFI security.



If you are using WIFI, hotspot or Bluetooth, I suggest you to check if all of this connection types are password protected, if your WIFI is open network then any phone or PC with WIFI can connect to your system.



Method 2: LAN check.



Check if there are any other systems connected to the same LAN network.



Method 3: Check connected devices.

1. Press Windows + R key on your keyboard together.
   
2. Type control printers and hit enter.
   
3. You will see all the devices and printer connected to the computer.
   
4. You can right click and remove any unknown devices connected to your computer.
   

Method 4: Check Bluetooth and other devices.

1. Navigate to Settings > Devices.
   
2. Check under Bluetooth & other devices if you have any unknown devices connected.
   
3. Click on the device name and click on
   Remove Device.
   

If the issue persists, reply to this post with the results of the troubleshooting methods provided above so that we can narrow down the root cause of the issue.



Hope it helps.

Amit Sunar

Microsoft Community – Moderator