U.S. Patent Jul. 18, 2006 Sheet 1 0f 7 US 7,078,607 B2 120 120 110 ROUTER FIG. 1 WIDE AREA 130 NETWORK (WAN) 1 10 I": 1 10 ROUTE - 140 120 REMOTE COMPUTER 120 LOCAL AREA NETWORK (LAN) 140 REMOTE COMPUTER 100 ROUTER