ocr: SECURE INTERNET COMMUNICATION VIA PPTP Calltol ISP Remote Corporate PPIPSOSSION ISP uses LAN Remotes access servers suppotng PPIP PPP client supporting PRIP Remote Corporate PRIPsession ISP with CaltoISP. usee LAN PPTP temceaccess support Serversisuppontng PATS FPP client SOlRGE-INIOOWS NA Resource Ctray, NOW Riders Posris Iwo-Way' - Tunneling. A PPIP, session CaTt origmate at the client, creating a tunnel 10t de corporate server that is ransparent to the ISP. Alternatively, the ISP can aCt as the client jront end, providing a tumnel from the ISP: to the corporate server.