Method and system for detection of NAT devices in a network
First Claim
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1. A Network Address Translation (“
- NAT”
) Gateway detector comprising;
a network communication module to generate and transmit over a wired network one or more interrogation packets to an external side of a suspected NAT gateway, wherein the one or more interrogation packets are generated to emulate a packet of a current session in which the suspected NAT gateway is engaged and transmitted with a Time to Live (TTL) field selected to expire upon arrival of the packet at the suspected gateway, and wherein said communication module monitors responses sent by the suspected NAT gateway over the wired network.
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Abstract
Disclosed is a device, system and method for detecting a Network Address Translation (“NAT”) gateway on a network. According to some embodiments of the present invention a detector including a network communication module may transmit one or more interrogation packets to a suspected NAT gateway.
7 Citations
19 Claims
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1. A Network Address Translation (“
- NAT”
) Gateway detector comprising;a network communication module to generate and transmit over a wired network one or more interrogation packets to an external side of a suspected NAT gateway, wherein the one or more interrogation packets are generated to emulate a packet of a current session in which the suspected NAT gateway is engaged and transmitted with a Time to Live (TTL) field selected to expire upon arrival of the packet at the suspected gateway, and wherein said communication module monitors responses sent by the suspected NAT gateway over the wired network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- NAT”
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11. A method for Network Address Translation (“
- NAT”
) Gateway detection comprising;generating and transmitting over a wired network one or more interrogation packets to an external side of a suspected NAT gateway; wherein one or more of said interrogation packets are generated to emulate a packet of a current session in which the suspected NAT gateway is engaged and are transmitted with a Time to Live (TTL) field selected to expire upon arrival of the packet at the suspected gateway; and
monitoring responses sent by the suspected NAT gateway over the wired network. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
- NAT”
Specification