FACTOID # 21: 15% of Army recruits from South Dakota are Native American, which is roughly the same percentage for female Army recruits in the state.
 
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Encyclopedia > Layered Service Provider

A Layered Service Provider is part of the Microsoft Windows Winsock 2 interface. It allows features to be added to the network protocols without replacing ws2_32.dll. Microsoft Windows is the name of several families of operating systems by Microsoft. ... Winsock 2 logo In computing, Winsock (short for Windows Sockets) is a specification that defines how Windows network software should access network services, especially TCP/IP. // Background Early Microsoft operating systems, both MS-DOS and Windows, offered limited networking capability, chiefly based on NetBIOS (a technology that Microsoft adopted from...


LSP technology is often used (exploited) by spyware and adware vendors. For example, WebHancer inserts itself as an LSP in the network stack and forwards all of the user's traffic to an unauthorized external site, where it is data-mined to find the user's special interests to bombard him/her with targeted advertisements, as well as spam e-mail. If Webhancer is removed, the computer may be left without a working network connection, should the LSP fails to unregister properly, which is a common grief. A large number of toolbars, some added by spyware, overwhelm an Internet Explorer session. ... Adware or advertising-supported software is any software package which automatically plays, displays, or downloads advertising material to a computer after the software is installed on it or while the application is being used. ...


LSP is a DLL that has to be registered using a special LSP registrant which instructs Winsock 2 the loading order of the LSPs (there can be more then one LSP installed) and which protocols to intercept. Winsock 2 logo In computing, Winsock (short for Windows Sockets) is a specification that defines how Windows network software should access network services, especially TCP/IP. // Background Early Microsoft operating systems, both MS-DOS and Windows, offered limited networking capability, chiefly based on NetBIOS (a technology that Microsoft adopted from...


LSP works by intercepting Winsock 2 commands before they are processed by ws2_32.dll, the LSP can modify the commands, drop a command, or just log the data which makes LSP a powerfull tool for: Network filters, Network intercepters, spyware and adware, and stream based sniffers. Winsock 2 logo In computing, Winsock (short for Windows Sockets) is a specification that defines how Windows network software should access network services, especially TCP/IP. // Background Early Microsoft operating systems, both MS-DOS and Windows, offered limited networking capability, chiefly based on NetBIOS (a technology that Microsoft adopted from... A large number of toolbars, some added by spyware, overwhelm an Internet Explorer session. ... Adware or advertising-supported software is any software package which automatically plays, displays, or downloads advertising material to a computer after the software is installed on it or while the application is being used. ...


There are two kinds of LSP: IFS and non IFS LSP, currently most LSPs on the market are non IFS, the difference between the two LSPs is that non IFS LSP modifies the socket handle to a non valid windows IFS handle and therefore the LSP must implement all Winsock 2 methods, IFS LSP on the hand preserves the socket handle thus allowing the LSP to implmenet only the functions it wants to intercept. A socket generally designates a cavity or region used for fitting and connecting some specific device. ... Winsock 2 logo In computing, Winsock (short for Windows Sockets) is a specification that defines how Windows network software should access network services, especially TCP/IP. // Background Early Microsoft operating systems, both MS-DOS and Windows, offered limited networking capability, chiefly based on NetBIOS (a technology that Microsoft adopted from... A socket generally designates a cavity or region used for fitting and connecting some specific device. ...


References

  • http://www.microsoft.com/msj/0599/LayeredService/LayeredService.aspx

External links

  • New PowerPoint Trojan installs itself as LSP
  • Komodia's Inc. free LSP resources and repacked version of Microsoft's LSP sample

 
 

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