`
`The following three steps are identical to standard Winsock communications
`steps described above; however, nested inside them are additional actions and
`options introduced by Aventail Connect.
`
`218.
`
`I explain each ofthese steps in detail below, but first provide a
`
`flowchart that I prepared illustrating these steps:
`
`Client wishes to establish
`dornmun icaion channel with
`destination
`
`Does dienl know
`hoslname or IP
`address?
`
`Send DNS iookup
`request to TC PIIP
`slack
`
`intercepted by Au-enla
`Connect: is hoslnarne on
`Local Look up Ia ble‘?
`
`Reltirn IF‘ address
`frrrn local look up
`
`Perform conventional
`DNS lac-|<U9.
`raurning IP address
`
`Request conrivedlon. using
`IP address
`
`Create and return
`false" DNS entry
`
`matdi redirection
`rue?
`
`Create and return
`‘faEse' DNS entry
`
`intercepted by Avenlail
`Connect:
`
`Conventional TCPHP
`stack will haidie crealing
`connection and
`oommunrcatons
`
`Does address match
`redirection rule?
`
`Establish VPN cnnnecion
`via Avenlaii E)rtreNet
`Server to access resource
`
`VIRNETX EXHIBIT 2014
`
`89
`
`Apple v. Virnetx
`Trial IPR2015-00810, -00811, -00812
`
`Petitioner Apple Inc. - Exhibit 1005
`
`VIRNETX EXHIBIT 2014
`Apple v. VirnetX
`Trial IPR2015-00810
`
`Page 1 of 2
`
`
`
`Petition for Inter Partes Review of U.S. Patent Nos. 8,868,705 and 8,850,009
`
`Ex. 1009 (ACAG) at 9.
`
`215. Because the Aventail Connect software sits between the application
`
`running on the computer and the TCP/IP stack, Aventail Connect can evaluate,
`
`route, and encrypt any communications that make use of TCP/IP. See Ex. 1009
`
`(ACAG) at 10:
`
`When the Ave-ntail Connect LSP receives a connection request, it determines
`whether or not the connection needs to be redirected (to an Aventail ExtraNet
`Server) and/or encrypted (in SSL).
`
`216. Aventail Connect can therefore work with (any application running on
`
`Windows that makes use of the TCP/IP protocol, such as web browsers and email
`
`programs. See, e.g., Ex. 1009 (ACAG) at 8:
`
`Windows TCPIIP networking applications (such as telnet, e-mail, Web browsers,
`and ftp) use WinSock (Windows Sockets) to gain access to networks or the
`Intemet. Winsock is the core component of TCPIIP under Windows, and is the
`interface that most Windows applications use to communicate to TCPIIP.
`
`See also Ex. 103] (Windows NT for Dummies) at 14.
`
`217. As Aventail explains, the same three basic steps described above are
`
`still performed when Aventail Connect is running, but Aventail Connect modifies
`
`each of these steps in order to proxy certain network traffic to computers on a
`
`private network through the Aventail Extranet Server. See Ex. 1009 (ACAG) at
`
`11:
`
`Page 2 of 2
`
`Petitioner Apple lnc. — Exhibit 1005
`
`88
`
`Page 2 of 2
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