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|File - Download WhoIsConnectedSniffer v1.28|
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A network discovery tool that listens to network packets on your network adapter using a capture driver (WinpCap or MS network monitor) and accumulates a list of computer and devices currently connected to your network.
WhoIsConnectedSniffer uses various protocols to detect the computers connected to your network, including ARP, UDP, DHCP, mDNS, and BROWSER.
For every detected computer or device, the following information is displayed: (Some of the fields might be empty if the information cannot be found inside the packets) IP Address, MAC Address, name of the device/computer, description, Operating System, Network Adapter Company, IPv6 Address.
After collecting the connected computers/devices information, you can easily export the list to tab-delimited/comma-delimited/xml/html file.
WhoIsConnectedSniffer vs Other NirSoft Tools
As you may know, NirSoft already provides other tools (Wireless Network Watcher, NetBScanner) that scan the network and show the computers that are currently connected. As opposed to the other tools, WhoIsConnectedSniffer doesn't perform any scanning and it doesn't send any packet to the other computers. WhoIsConnectedSniffer only listens to the packets sent by other computers and devices, analyzes them and then displays the result on the main window.
WhoIsConnectedSniffer also provides some information that the other tools cannot get, like operating system, description text of the computer, IPv6 address.
System Requirements And Limitations
Any version of Windows, starting from Windows 2000, and up to Windows 11. Both 32-bit and 64-bit systems are supported. When using Microsoft Network Monitor driver on 64-bit system, you must use the 64-bit version of WhoIsConnectedSniffer.
You have to install one of the following capture drivers:
WinPcap capture driver
Network Monitor driver
WhoIsConnectedSniffer cannot detect a device or computer if it doesn't send any packet that is received by the computer running this tool.
WhoIsConnectedSniffer cannot detect computers from other subnets.
Start Using WhoIsConnectedSniffer
Except of the capture driver, WhoIsConnectedSniffer doesn't require any installation process or additional dll files. In order to start using it, simply run the executable file - WhoIsConnectedSniffer.exe
After running WhoIsConnectedSniffer in the first time, you should choose the correct capture driver and the network adapter you want to use.
After you choose the desired capture driver and the network adapter, WhoIsConnectedSniffer starts to listen the packets on your network adapter and updates the main window when a device or computer is detected.
You have to wait from a few seconds to a few minutes until the first computers/devices appear on the main window of WhoIsConnectedSniffer.
After collecting the connected computers/devices information, you can easily export the list to tab-delimited/comma-delimited/xml/html file by selecting all items (Ctrl+A), and then using the 'Save Selected Items' option (Ctrl+S).
Protocols supported by WhoIsConnectedSniffer
ARP: WhoIsConnectedSniffer listens to this protocol to get the IP address and MAC address of computers and devices.
UDP: When a computer broadcasts a UDP packet to all other computers, WhoIsConnectedSniffer extracts from it the IP address and the MAC address.
DHCP: When a computer connects to the network, it usually sends a DHCP request. WhoIsConnectedSniffer uses this request to get the host name and IP address of the computer.
mDNS: This protocol is used on Linux and Mac OS systems. WhoIsConnectedSniffer uses it to get the host name and IP address of the computer, and also the operating system (on Linux)
BROWSER: This protocol is mainly used by Windows, but some Linux systems supports this protocol too. WhoIsConnectedSniffer uses it to get the name of the computer, description text of the computer, and the operating system.
Translating WhoIsConnectedSniffer to other languages
In order to translate WhoIsConnectedSniffer to other language, follow the instructions below:
Run WhoIsConnectedSniffer with /savelangfile parameter:
A file named WhoIsConnectedSniffer_lng.ini will be created in the folder of WhoIsConnectedSniffer utility.
Open the created language file in Notepad or in any other text editor.
Translate all string entries to the desired language. Optionally, you can also add your name and/or a link to your Web site. (TranslatorName and TranslatorURL values) If you add this information, it'll be used in the 'About' window.
After you finish the translation, Run WhoIsConnectedSniffer, and all translated strings will be loaded from the language file.
If you want to run WhoIsConnectedSniffer without the translation, simply rename the language file, or move it to another folder.
This utility is released as freeware. You are allowed to freely distribute this utility via floppy disk, CD-ROM, Internet, or in any other way, as long as you don't charge anything for this and you don't sell it or distribute it as a part of commercial product. If you distribute this utility, you must include all files in the distribution package, without any modification !
The software is provided "AS IS" without any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The author will not be liable for any special, incidental, consequential or indirect damages due to loss of data or any other reason.
If you have any problem, suggestion, comment, or you found a bug in this utility, you can send a message to email@example.com
Fixed bug: WhoIsConnectedSniffer displayed random external IP address for the router, instead of the actual IP address.
This download is for the 64bit version. If you need the 32bit version, download here.
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