- TxD, RxD, GND, CTS/RTS (BLE V4.x & V5.x) Central & Peripheral setting: 1. Scan the BLE devices 2. Choose the one to be the central role 3. Address and the device will become the central 4. The central will connect the peripheral device automatically 5. The device will be reset to default if need to connect other peripheral device.
- Mar 10, 2017 CID addresses can be used in situations where global uniqueness is not required. These CID numbers tend to be used for MAC address randomization and are usually transmitted when a device unassociated with a specific access point broadcasts 802.11 probe requests, the paper explains.
Mar 10, 2017 By sending an RTS frame to IEEE 802.11 client devices, an attacker obtains a CTS response from which they can derive the global MAC address. Once the global MAC has been obtained, the attacker can easily track that device in the future by sending it RTS frames containing the global MAC. A MAC (short for “media access control”) address is a series of numbers and letters that identify a network device. Our devices need to know the addresses of every device and network they connect to if you want to connect to the internet or send and receive information.
| Click here to return to the 'Send popup messages to Windows users' hint |
Hi,
For those of us who aren't windows people ( :) ), how does one find the NETBIOS name of a computer?
Thanks!
I'm not sure. If you can browse the windows network neighborhood then you can tell by what the names of the network computers are. However I am not sure about computers that aren't sharing things on the network. You may need to try and find out the naming convention of computers on the network. I know that on my university network all Windows 2000 computers and later must be named for the student's user name but that's just here. If anyone knows a trick using smbclient to translate an IP to a netbios name please post it.
On a Windows 2000 network, you can actually use the USERNAME rather than the NETBIOS name. I've been using it all morning to great effect!
In the Terminal, type in:
findsmb
This will give you a list of all the smb clients in your subnet.
Which ports do I need to open n my ipfw configuration to make this work? I think I hardened my OS X machine to much for these little tricks.
It looks like SMB runs on port 139.
You can also do the following:
This gives you the IP:
nmblookup -R [NETBIOS name]
This gives you the NETBIOS name:
nmblookup -A [IP]
But I agree, findsmb is far more useful :-)
From the smbclient man page:
'If the receiving computer is running WinPopup the user will receive the message and probably a beep. If they are not running WinPopup the message will be lost, and no error message will occur.'
I take this to mean that if the Windows box is 'hardened', then this won't work for you.
Chat
How/Does this work with XP?
I just tested it with an XP box and it works fine.
For example, if you were trying to message my PCs, I'd never know, because I always disable the Windows messaging service nowadays -- I've never seen it used legitimately, but I have been spammed with popups. If I saw a service that even looked like 'WinPopUp' running on my Windoze box, I'd stop that service. I guess these messages we're sending rely on one of those two services.....
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osxpounder
Yup, the wise person disables this stuff almost without thinking twice these days. Pity, too, since some of these services used to be good for something at one point.
When I set up my personal XP system a year ago it only took about 45 minutes before being spammed through the messenger service for the first (and last) time.
Additionaly, you can use multiple words for FROMNAME if you bracket them with single quotes.
Alternately, you can use [code]echo 'hello' | smbclient -M NETBIOSNAME[/code], of course replacing hello with the message of your choice.
On my Win2K Machine at home, I was receiving messages from the Internet. They said something like 'A new kind of security hack is coming...' and directed me to a decidedly non-Microsoft web site to download (and pay for) some decidely non-Microsoft utility. Yeah... right....
A quick Google search gave me instructions on turning off the messanging service, and I haven't been bothered since.
That Windows ships with it on by default, however, and that it can be exploited from the Internet, constitutes a security risk in my book. Maybe it's been changed with WinXP, but given the functionality of this hint, I doubt it.
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-Pie
<http://www.storybytes.com>
Right, this is what I was talking about when I said I'd never actually seen this service used legitimately -- but I was getting intentionally annoying popups on my PCs until someone hipped me that there was a Messaging service running in the background, by default, allowing anyone in the world to send me pop ups.
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osxpounder
http://www.versiontracker.com/dyn/moreinfo/macosx/21240
In response to an email that I got, there is no confirmation in the terminal. The only confirmation you get is by looking at the recipient's screen.
Perhaps this would not be categorized as 'responsible' use, but in my defense I'm only using it for a little fun at home with my wife and my dad. My wife has already found me out. They get the following message from 'Microsoft Licensing Division':
'Failure to purchase enough Microsoft products has caused your Windows XP license to be revoked. Please shut off your computer immediately and ship it to: Contraband Device Receiving, Microsoft Corp., Redmond, WA 96775. We apologize for any inconvenience.
'Click OK or close the Window to signify agreement.'
It's all harmless fun in the family. ;)
That's genius. I'm so going to get my coworkers with this!
Arp - Resolving MAC Address For IP Address Using C++ On Linux ...
anyone know how to do this with a workgroup or a domain? under windows (yeah i know) the sytax is... any hints? for the record the following is what i tried: in this case morningbell is the domain, and apl4evr happens to be the windows 2000 adv server box (a member of morningbell) i was sitting in front of when i tried this.Backup
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vacuums do not suck. they merely provide an absence that allows other objects to take the place of what becomes absent.
You can set your workgroup in the Directory Access program in the utilities folder.
thats not what i'm saying.what i'm saying is that i want to be able to send to a workgroup, not participate :P
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vacuums do not suck. they merely provide an absence that allows other objects to take the place of what becomes absent.
As far as I know, you have to be part of the workgroup that you want to send messages to.
...
run simulation
echo 'Yoohoo, simulation is done!' | smbclient -M mymac
tar zxvf nbtscan-1.5.1.tar.gz
./configure
make
make install
(use sudo as appropriate)
Does anyone know how to lookup NETBIOS names over the internet. I've tried nbtscan, but it only seems to work for IPs on my local network. Am I configuring something wrong? Are there any other programs that probide this funtionality?
Thanks
I'm a Mac person (17' G4 PB running 10.2.8) who wants to learn about UNIX and as such am a newcomer to UNIX syntax, so this may seem to be a silly question. I am trying to install the 'nbtscan-1.5.1.tar.gz' utility. Using Terminal I moved the package file from my desktop to the '/usr/bin' directory where it looked like all the other Terminal utilities were stored. I then unpacked it using your directions and it unpacked itself as a folder full of stuff called 'nbtscan-1.5.1a'. Then I typed './configure' and it said 'command not found'. I changed my working directory from 'usr/bin' to 'usr/bin/nbtscan-1.5.1a' and typed 'configure' (which is the name of a file in there) but got the same result. What am I missing? Thanks for your help!
I'm no UNIX expert, but:In Terminal, look at a listing of that directory you mention, the one that has the file 'configure' in it, but type the ls command as follows:
ls -la|more
[If there are too many files to show in the window, the 'more' keeps the list from scrolling until you whack the space bar]
Listing the files this way shows you what permissions are set on each file, over at the far left. You want to see if the 4th place over from the left has an 'x' in it, as follows:
-rwxr--r-x 1 james james 169 12 Dec 17:32 foo
The above example shows a file that is executable, and I know because of the 4th character from the left: it's an 'x' instead of a dash ['-'].
If you don't see an 'x' there, you need to use the chmod command to make your file executable:
chmod u+x foo
Pardon me if I've just explained something you already knew! I started this post yesterday and just now noticed I hadn't finished it yet.
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osxpounder
I got an email asking how to send messages to linux. The messages are sent the same way but you have to configure samba on the linux box to display those messages in some way. I don't know how to do it but I would imagine the documentation is out there somewhere.
Does anone know how can Windoze users reply to a Mac machine, or send messages?
There's LinPopUp for *nix
http://sourceforge.net/project/showfiles.php?group_id=83081&package_id=85382
There's MacXPop for Mac OS X
http://wwww.versiontracker.com/dyn/moreinfo/macosx/21240
My question is about Sending to another Mac through MacXPop. I have a 3 computers doing jobs and when they are done with each job they send a message to my Mac telling me the job is done. One PC and 2 other macs. on the macs, I have thems set up to send like this
'smbclient -M THEODORE -U SIMON
Current Job Finished'
That isn't quite how I have it written out, but anyways, when ever I send a message from a mac using the -U option, I never actually get a name. for instance I send from -U GOD and the MacXPop window says
Message From: ___D__________
Even If I don't send it with a -U, I end up with __________ and not my NETBIOS Name for my mac.
Whats UP???
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Kevin Steele