Usb Lan

November 13, 2010 3:09 am | Wireless Networking

Iogear GUC2100 Fast Ethernet Adapter External USB Fast LAN RJ 45 10 100Base TX
Iogear GUC2100 Fast Ethernet Adapter External USB Fast LAN RJ 45 10 100Base TX
Paypal   US $38.34
2 USB Female to RJ45 Male Ethernet LAN Router Adapter15Ft USB A A Cable M M
2 USB Female to RJ45 Male Ethernet LAN Router Adapter15Ft USB A A Cable M M
Paypal   US $4.00
MINI USB 20 Ethernet 10 100 RJ45 Network Lan Adapter Card
MINI USB 20 Ethernet 10 100 RJ45 Network Lan Adapter Card
Paypal   US $9.99
Remote Cable Tester for USB RJ45 RJ11 COAX BNC Network LAN Coax Telephone Wire
Remote Cable Tester for USB RJ45 RJ11 COAX BNC Network LAN Coax Telephone Wire
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Multi 5 in 1 Cable Tester for RJ45 RJ11 BNC RG6 USB LAN Computer Com Wire Toner
Multi 5 in 1 Cable Tester for RJ45 RJ11 BNC RG6 USB LAN Computer Com Wire Toner
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LAN USB Multi Cable Tester Network RJ45 CAT5
LAN USB Multi Cable Tester Network RJ45 CAT5
Paypal   US $4.40
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Iogear GUC2100 Fast Ethernet Adapter External USB Fast LAN RJ 45 10 100Base TX
Iogear GUC2100 Fast Ethernet Adapter External USB Fast LAN RJ 45 10 100Base TX
Paypal   US $38.34
2 USB Female to RJ45 Male Ethernet LAN Router Adapter15Ft USB A A Cable M M
2 USB Female to RJ45 Male Ethernet LAN Router Adapter15Ft USB A A Cable M M
Paypal   US $4.00
MINI USB 20 Ethernet 10 100 RJ45 Network Lan Adapter Card
MINI USB 20 Ethernet 10 100 RJ45 Network Lan Adapter Card
Paypal   US $9.99
Remote Cable Tester for USB RJ45 RJ11 COAX BNC Network LAN Coax Telephone Wire
Remote Cable Tester for USB RJ45 RJ11 COAX BNC Network LAN Coax Telephone Wire
Paypal   US $18.99
Multi 5 in 1 Cable Tester for RJ45 RJ11 BNC RG6 USB LAN Computer Com Wire Toner
Multi 5 in 1 Cable Tester for RJ45 RJ11 BNC RG6 USB LAN Computer Com Wire Toner
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LAN USB Multi Cable Tester Network RJ45 CAT5
LAN USB Multi Cable Tester Network RJ45 CAT5
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Usb Lan

USB detection using WMI script

USB flash drives are very common and can be found in almost every computerized environment for storing and transferring data between computers. These USB devices make it really easy for potential attacker to exploit unprotected computers with malicious virus and Trojan software and provide a gateway to the network for manipulating sensitive data.

Detecting USB storage devices
There are some nice tools that can be found on the net that will notify about USB devices on local and remote windows platforms. But most of them are not free and will require an installation of an agent on the remote windows platforms. Using the preinstalled Windows Management Instrumentation (WMI) on windows platforms is free and will not require any remote agent. It will only require a simple script that can be run manually from a privileged user account or from another network monitoring software like Security Center: IDS IPS Network Access Protection and Switch Protector: NAC Network Access Control Monitoring network security scanners.

WMI notification event script
The following USB notification event script will send an event message in response to any operation of USB device on local or remote windows platform. For simplicity, the script is using a temporary event subscription, which exists only as long as the script is running. Some modifications will be needed for a permanent event subscription that will not require a perpetually running script:

VBScript (should be copied and saved as .vbs file):
strComputer = "." '(Any computer name or address)
Set wmi = GetObject("winmgmts:\" & strComputer & "rootcimv2")
Set wmiEvent = wmi.ExecNotificationQuery("select * from __InstanceOperationEvent within 1 where TargetInstance ISA 'Win32_PnPEntity' and TargetInstance.Description='USB Mass Storage Device'")
While True
Set usb = wmiEvent.NextEvent()
Select Case usb.Path_.Class
Case "__InstanceCreationEvent" WScript.Echo("USB device found")
Case "__InstanceDeletionEvent" WScript.Echo("USB device removed")
Case "__InstanceModificationEvent" WScript.Echo("USB device modified")
End Select
Wend

JScript (should be copied and saved as .js file):
strComputer = "."; //(Any computer name or address)
var wmi = GetObject("winmgmts:\\" + strComputer + "\root\cimv2");
var wmiEvent = wmi.ExecNotificationQuery("select * from __InstanceOperationEvent within 1 where TargetInstance ISA 'Win32_PnPEntity' and TargetInstance.Description='USB Mass Storage Device'");
while(true) {
var usb = wmiEvent.NextEvent();
switch (usb.Path_.Class) {
case "__InstanceCreationEvent": {WScript.Echo("USB device found"); break;}
case "__InstanceDeletionEvent": {WScript.Echo("USB device removed"); break;}
case "__InstanceModificationEvent": {WScript.Echo("USB device modified"); break;}}}

About the Author

For more information on network security and management software solutions for real-time monitoring systems, please visit Lan-Secure.com: Network Management Software.

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Iogear GUC2100 Fast Ethernet Adapter External USB Fast LAN RJ 45 10 100Base TX
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Paypal   US $38.34
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