Wide area network system providing secure transmission
First Claim
1. A secure transmission system for use in a wide area network (WAN) handling message traffic in accordance with a set of messaging protocols that use a network addressing scheme comprising source and destination addresses, the set of messaging protocols supporting broadcast and unicast addressing, and one or more service providers coupled to the WAN, each of said service providers having a network address, said secure transmission system comprising:
- a transceiver coupled to said WAN;
one or more computing devices connected to said transceiver, each of said computing devices operated to transmit and receive message traffic in accordance with said messaging protocols, each of said computing devices having a network address;
means for associating each of said computing device network addresses with one of said service provider network addresses, said associating means having stored associations between said computing device network addresses and said service provider network addresses; and
said transceiver being operated in response to a received unicast message to determine whether or not said association means has a stored association having the source network address and the destination network address of said unicast message, and to transmit said unicast message if said association means has a stored association having said source network address and said destination network address.
1 Assignment
0 Petitions
Accused Products
Abstract
A system that provides secure transmission of data between a subscriber'"'"'s PC and an online service provider (OLS) over an Ethernet WAN. The system includes a remote transceiver unit located at a subscriber site and connected to the subscriber'"'"'s PC; a central transceiver unit located at a telephone central office and connected to the remote transceiver unit over a twisted pair network and also connected to a WAN; an authorization server that is connected to the WAN; and one or more OLSs, which may include Internet service providers, connected to the WAN. Security of transmission is provided through a method in which only subscriber transmissions directed to a session-specific OLS are allowed to pass through the central transceiver unit onto the WAN, and only unicast transmissions from authorized OLSs are allowed to pass through the central transceiver unit to the subscriber port of the remote transceiver unit. Broadcast transmissions are minimized in favor of unicast messages. The authorization server delivers the IP and MAC addresses of the session-specific OLSs and the subscriber'"'"'s PC to the remote transceiver units.
-
Citations
14 Claims
-
1. A secure transmission system for use in a wide area network (WAN) handling message traffic in accordance with a set of messaging protocols that use a network addressing scheme comprising source and destination addresses, the set of messaging protocols supporting broadcast and unicast addressing, and one or more service providers coupled to the WAN, each of said service providers having a network address, said secure transmission system comprising:
-
a transceiver coupled to said WAN; one or more computing devices connected to said transceiver, each of said computing devices operated to transmit and receive message traffic in accordance with said messaging protocols, each of said computing devices having a network address; means for associating each of said computing device network addresses with one of said service provider network addresses, said associating means having stored associations between said computing device network addresses and said service provider network addresses; and said transceiver being operated in response to a received unicast message to determine whether or not said association means has a stored association having the source network address and the destination network address of said unicast message, and to transmit said unicast message if said association means has a stored association having said source network address and said destination network address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification