There are two different versions of Winsock LSP: IFS & non IFS. Generally most LSPs are non IFS – including the products of Komodia.com. Non IFS LSPs actually change the socket handle to create a non valid Windows IFS handle. IFS LSPs do not do this, they keep the socket handle, which makes it possible for the LSP to use only the functions it intercepts.
For more information regarding the Winsock IFS driver, please see the free LSP guide.
Chris