Unknown device connected to my network

I can see 2 devices listed in my home network that I cannot identify can anyone help with this? I do not have any linux device that I know of the listing s are : udhcp-1-19-4-VDlinux and udhcp-1-7-2-28

To add....
Are these shown as connected via ethernet of wifi?
Could you possibly disconnect ALL devices bar one laptop, refresh the hub manager home network page and reconnect the other devices one at a time, refresh after each device. You should then find the guilty devices.
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Amazon Q&A: E1200 - Shows unknown devices connected

E1200 shows unknown devices connected I recently bought my first router. My question is that it shows multiple devices attached. When I chect the DCHP table it shows only my pc. Is there something I don't understand?

Where do you get the info telling you that you have unknown devices connected to your router's network? Make sure to enable the wireless security of the router. Use WPA2 encryption. With wireless security enabled, it will ensure that no one else can connect not unless you provide them the wireless security code.

Unknown device connected to my iCloud

Unknown device connected to my iCloud
Problem:
Graduated from high school and returned my Macbook pro for school.
A student is most likely to have my old computer now.
I can track the computer via my new Mac through the Find My iPhone. I see that the person's computer is connected to my iCloud. I have the option to lock it, erase the contents and probably he has the same with my current Mac.
Most likely, the person is not logged out everywhere on his computer where there are connections to my Apple ID or iCloud. This is the IT staff at the school's fault, they are responsible for the reset of the computers before new students receive them.
Background on what I, in agreement with the one who has my old computer, have done to try to solve the problem:
Changed my password on iCloud.
Reset -II-.
Updated Find My iPhone.
He factory reset his computer.
He has logged out of iCloud, he believes.
I locked his computer before I knew who he was. He called the number I wrote which came up on his computer screen. After the conversation, I gave him the unlock code because he doesn't have any incentive to abuse the situation. He didn't know about the iCloud clutch at all, he doesn't even have his own account.
He can not access any system settings that affect iCloud Apple ID because he is not an administrator. Do you think this is the reason that I still see the computer connected to my iCloud?
The conversation we had:
[...] = my own marks made in connection with this post
ME: Well, hope you've entered the computer [after he restored it]
HE: I am about to restore it
I: Okay. So.. here, I see you [sends picture of map of his house with the green dot, radar, marking his computer]
HE: Hmm .. I have logged into my friend's iCloud too ..
ME: Have you entered the computer yet? Strange, but since I changed the password on iCloud, you should not be logged in again after you once log out
HE: Entered and entered, it's on anyway. Aa very weird because I am logged into someone else's Apple ID too. But is the content on my computer synced with your?
ME: I don't understand how you can be inside two Apple ID accounts at the same time .. Our is not in sync I think. Is your locked or?
HE: No, now I have factory reset it so everything should be normal soon
ME: Okay, suppose you disappear from the map after you log out via the system settings. Sry for all the jam, but basically it's the IT staff's fault this
HE: No problems, aa do it as soon as it is programmed.
HE: So, I'm logged out from your account. What's the deal with you now?
ME: Should check out what a friend has to say. You are still connected to iCloud
ME: Do you have any "Find My Mac" settings
HE: Shall see [sends picture that says "System settings wants to make changes to the Find My Mac. Enter an administrator name and password to allow this". This he cannot do because IT staff are admins]
HE: Can't. IT guys are the admins and we have school holidays now haha
I: Have you tested your login details
HE: What do you mean?
ME: The information you type in when you log on to the computer
HE: Aha no I'll test
HE: Doesn't work
ME: ****. Then it's the admin who can do what is needed to solve the problem.
HE: I will contact them then

To add....
Are these shown as connected via ethernet of wifi?
Could you possibly disconnect ALL devices bar one laptop, refresh the hub manager home network page and reconnect the other devices one at a time, refresh after each device. You should then find the guilty devices.
-+-No longer a forum member-+-

BT HomeHub unknown device connected

I have been having serious problems with my internet and wi-fi recently. Firstly, about a month ago I kept on being told there was a redirect loop in every browser. I could only fix this through using an Ethernet cable. Now, every website I go on has ads and 10+ pop ups from one site called 'unideals'. I have never visited that site so I need some help please! Also when I go on my HomeHub 4 manager, it says there is an unknown device with a strange MAC address. Help!

Haydn123 wrote:
If I could get you the MAC address, would you be able to give me an idea of what the unknown device could be?
This website should help.
http://www.coffer.com/mac_find/
Its not been updated for a while, but you can usually find the vendor.
There are probably other websites which do the same. Just do a Google search for something like "MAC address lookup"
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

How do I open ports on my airport extreme and assign a fixed IP Address for a device connected to my network?

I recently had a security system installed in my house. One of the features is an EPAD which enables me to have a virtual keypad on my iphone, and computer to operate the alarm system. The technician was not familiar with Mac's and Airports. How do I open port 80 to 80 in my airport and assign a fixed IP address for the EPAD? Apparently this is what is needed to make this work.

There are three ranges of "strictly local" IP addresses reserved for local Network use:
192.168.xxx.yyy
172.16.xxx.yyy
10.xxx.yyy.zzz
What your Router does for you is to act as your agent on the Internet.Your requests are packaged up and forwarded on your behalf, and only when a response is expected is the response returned to your local IP address.
Directing Network Traffic to a Specific Computer on Your
Network (Port Mapping)
AirPort Extreme uses Network Address Translation (NAT) to share a single IP address with the computers that join the AirPort Extreme network. To provide Internet access to several computers with one IP address, NAT assigns private IP addresses to each computer on the AirPort Extreme network, and then matches these addresses with port numbers. The wireless device creates a port-to-private IP address table entry when a computer on your AirPort (private) network sends a request for information to the Internet.
If you’re using a web, AppleShare, or FTP server on your AirPort Extreme network, other computers initiate communication with your server. Because the Apple wireless device has no table entries for these requests, it has no way of directing the information to the appropriate computer on your AirPort network.
To ensure that requests are properly routed to your web, AppleShare, or FTP server, you need to establish a permanent IP address for your server and provide inbound port mapping information to your Apple wireless device.
To set up inbound port mapping:
1) Open AirPort Utility, select your wireless device, and then choose Base Station > Manual Setup, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary.
2) Click the Advanced button, and then click Port Mapping.
3) Click the Add button and choose a service, such as Personal File Sharing, from the Service pop-up menu.

Unknown Device Coming Up In Network ------ Broadc...

Hello Everyone Just Wondering If Anyone Has A Device BroadcomAP Come Up Under Network In Windows?
There Is Not Any Device I Dont Reconise In My Router If I Open It Up Windows Enters Network Setup And It Asks For a 8 Digit Pin, Anyone Know What This Is?
Kind Regards
Mark
Solved!
Go to Solution.

Its simply the wireless module within the home hub that uses the Broadcom chipset, nothing to worry about. AP means Access Point.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Unknown user connected to secure network?

I am using Time Capsule as my base station and, I believed, had a password protected network set up (there is a lock next to the network name in my airport drop-down options). When I was quitting iTunes this evening, I received a notice that there was a user connected. If anyone can help I'd love to know -- if this means that someone has been able to access my locked network, and if so, how I can remedy that. Thanks so much.

If you have an unauthorized user on your network I would connect my Mac to the TC via a cable, start the AirPort utility and go into "Manual" setup.
Then I would rename my network and make sure that under "Wireless" in the "Wireless options" the box is checked that say "Create a closed network".
Also make sure that you have set an administrator password on your TC.
Dont use known words or other easily guessed passwords.

My ipod touch wont connect to my network anymore.

it was working fine and then started to disconnect and reconnect so i reset the network settings and now i cant join the network at all. it shows the wifi icon but wont join network. help!?!?

Does the iOS device connect to other networks?
Does the iOS device see the network? (i do not know what " it shows the wifi icon" means)
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on your router
.- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem and it does not connect to any networks make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

Names of devices connected to router

How can I tell the names of the devices that are connected to my E2000 router? Cisco connect says I have 4 devices connected but I only have 3. I am trying to figure out where the 4th device is coming from.
Solved!
Go to Solution.

lindalinda wrote:
Cisco says I have 40 and I only have 4, huge difference. maybe because when I first installed my linksys. I called company for help and got some guy calling himself shibo and he hacked my computer and will not leave my router nor my computer. I have tried for 8 months to get rid of him, but he hacked into my dos. and as long as I remain with cisco linksys he is going to be on my router hacking my stuff. I think this company should not hire foreigners to maintain the business. I talked to cisco headquarters and they could not do anything, they just suggest that I ask for american based help only...so everyone. please beware!!
Hi! Where were you able to see the 40 devices connected to your network? Have you tried powering off your router and see if it shows the same number of devices connected to your network?

My Ipod Touch can not connect to any network.

It occured after I changed my password... I dont know how that can affect it, but I would just like to put that out there. I did try the ways to fix this problem, i tryed reseting my wifi settings to factory settings but that did not help. Any suggestions...

I have no idea what ", i tryed reseting my wifi settings to factory settings " means.
Does the iOS device connect to other networks?
Does the iOS device see the network?
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on your router
.- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

My itouch connectivity to my network/wifi isnt working...HELP:(!!

PLEASE HELP

Start here:
http://support.apple.com/kb/TS1398iOS: Troubleshooting Wi-Fi networks and connections
Does the iPod see the network?
Error messages?
Have you successfully connect to that network befor
Does the iPod connec to other networks?
Do other devices connect to your network?

My iPod won't connect to my network.

I have a recently purchased iPod Touch 5 generation, that was updated to iOS 8.2.
It is failing to connect to my home network, and I cannot understand why.
The MAC address was added onto my MAC address filter (I know some may say to turn it off but I can't, I'm not the network admin and they are stubborn as a mule when it comes to leaving the filter on. -_-), but it won't connect.
Initially it just said it was failing to connect, so I assumed an error was made in entering the MAC address to the filter, but the address matched.
Now it is saying 'incorrect password' even though the password is valid (I checked it at least three times before entering it).
It connects to my mobile phone's hotspot just fine if I turn it on, but that isn't a viable solution due to data restrictions.
I am at a loss as to why it won't connect to my Wi-Fi.

Does the iOS device connect to other networks? If yes that tends to indicate a problem with your network.
Does the iOS device see the network?
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on your router
.- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem and it does not connect to any networks make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

My ipod wont connect to micosoft network

just got an ipod and its set up on a mac so need to change to micosoft but when i do it say cannot connect to network?

You have not supplied much to go on
Does the iOS device connect to other networks?
Does the iOS device see the network?
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on your router
.- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

Already connect to a network but my wifi keeps loading

i've tried everything i could but it still loading

Does the iOS device connect to other networks?
Does the iOS device see the network?
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router
- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

Unknown PC server "connected" to the network

I have a weird problem. I've got one iMac and one MB Pro connected to my wireless network. On the iMac I've just today started getting a PC server showing up under "shared" in the sidebar in Finder. When i try to connect, it says that the connection fails. However, on another device I've got connected to the TV that can play movies and sounds over the network, the same device appears in the "workgroup" when I log in there. When I turn off the iMac, however, that device disappears as well. Somehow, it seems my iMac is running some kind of virtual PC server that I can't connect to..?
I'm getting really frustrated about this, because it seems to me to be a virus, but it's not possible to trace it. I'd appreciate any insights into this that the community can provide.

Hello guys,
More than likely you have nothing to worry about!
There are all kinds of devices that could be showing up on the sidebar of your Finder... Your DVR or cell phone might even show up there if they are connected to your network (wired or wireless).
There are several ways to go about finding out what the secret unknown device is...
1. Check your network for attached devices
Physically look at what is connected to your network by seeing what is plugged into your router or modem.
2. Check your router for DHCP clients
Your router will have some sort of configuration page that you can check from your computer. This will tell you what is attached and communicating with your network wired or wirelessly.
The DHCP client list shows what devices are getting IP addresses automatically (if assigned manually, they will likely not show up here). The instructions for this are different (but not too different) from router to router. Common brands for routers include Netgear, Linksys, and Apple.
On an Apple Airport wired and wireless DHCP "clients" are listed separately to find the wired ones go to Advanced > Logging & SNMP > Logs and Statistics > DHCP Clients and to find the wireless ones, look under AirPort > Summary > Wireless Clients. For another brand, you'll have to Google it.
3. Run a Serious Network Scan with Nmap/Zenmap
This is almost overkill for trying to find out what is on the sidebar of your Finder - but, nmap is an the best utility for network scanning. It can be downloaded from:
http://nmap.org/download.html#macosx
It comes with a graphical interface called Zenmap and a command line tool. Personally, I prefer the command line version but they both work the same. Zenmap does require X11.
Either way, you can scan your network if you know the IP address of your own computer while it is connected.
If you need to find your IP address - you can find this by EITHER opening a terminal and typing ifconfig OR by going to System Preferences > Network then choosing your Airport or Ethernet (whichever is connected) and looking for your IP address. It should be in the format ###.###.###.### - common IP subnets include 192.168.1.###, 192.168.0.###, and 10.0.1.### - when you've found your IP address, you can now do an nmap/Zenmap scan for all IPs within your subnet. Not only will this tell you what network devices are attached, but also it will try to detect what type of device and what operating system is being used.
To find ALL the devices attached to your network, you will have to search the entire range of your subnet - the subnet is the first three groupings of your IP address. For my computer's IP 192.168.1.5 this would be 192.168.1 and since the minimum address for an IP is 1 and the max is 255, I will be searching in the range 192.168.1.1-255 (if my IP was 10.0.1.101 or 10.0.1.5 then I would search 10.0.1.1-255).
If I'm using Zenmap I will make my target 192.168.1.1-255 and I will choose Quick scan from the profile - just to get an idea of what IPs are in use. 10 seconds later - Presto! A list of all the devices attached to my network.
Feel free to upload the list here and let me take a look if you have any trouble reading it yourself.
You can also do a scan by entering the following into the Command field of Zenmap or by running this in the Terminal (please adjust your subnet accordingly):
nmap -O -sA 192.168.1.1-255
This will attempt to get more information out of the attached devices, such as, what operating system they may be running.
Start with that and post back here to let me know what you find.

Unknown device connected to my network

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