US6381646B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple network connections from a single PPP link with partial network address translation
Assignee: Cisco Technology Inc
•
Filing: 1998-11-03
•
Granted: 2002-04-30
•
Expires: 2018-11-03
Abstract
Abstract Multiple simultaneous network connections from a single PPP connection may be accomplished. A primary PPP connection is established between a user and a first network. A first real network address for the user is then received, the first real network address assigned by the first network. Then, the gateway may establish a secondary network session between a gateway and a second network, receiving a second real network address assigned by the second network. Additional network connections may be added as secondary network sessions. Network address translation is then performed on packets traveling between the user and any of the secondary network sessions, but not on packets traveling between the user and the primary PPP connection. This allows for connection to multiple networks without disturbing the primary PPP session and also allows for the utilization of applications which may not be used with network address translation on the primary PPP session.
Inventors
- 👤 Shujin Zhang
- 👤 Jane Jiaying Jin
- 👤 Jie Chu
- 👤 Maria Alice Dos Santos
- 👤 Shuxian Lou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/40; H04L69/00; H04L69/14
Claims Analysis
Total Claims: 107
Claim 1
Independent Claim
119 words
A method for establishing multiple network connections for a user having a PPP connection to a gateway, including the steps of: establishing a primary PPP session between the user and a first network; receiving a first real network address for said user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; establishing a secondary network session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 2
Independent Claim
119 words
A method for establishing multiple network connections for a user having a PPP connection to a gateway, including the steps of: establishing a primary PPP session between the user and a first network; receiving a first real network address for said user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; establishing a secondary network session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 3
Dependent Claim
19 words
The method of claim 1 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 4
Dependent Claim
19 words
The method of claim 2 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 5
Independent Claim
157 words
A method for establishing multiple network connections for a user having a PPP connection to a gateway, including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second network; establishing a secondary PPP session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 6
Independent Claim
157 words
A method for establishing multiple network connections for a user having a PPP connection to a gateway, including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second network; establishing a secondary PPP session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 7
Dependent Claim
19 words
The method of claim 4 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 8
Dependent Claim
19 words
The method of claim 5 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 9
Independent Claim
110 words
A method for communications routing in a system in which a user is connected to a first external network and a second external network, the method including the steps of: receiving a packet sent from the user; examining said packet to determine if its destination is the first network or the second network; forwarding said packet directly to the first network if said packet indicates that its destination is the first network; performing network address translation on said packet if said packet indicates that its destination is the second network; and forwarding said translated packet to the second network if said packet indicates that its destination is the second network.
Claim 10
Independent Claim
110 words
A method for communications routing in a system in which a user is connected to a first external network and a second external network, the method including the steps of: receiving a packet sent from the user; examining said packet to determine if its destination is the first network or the second network; forwarding said packet directly to the first network if said packet indicates that its destination is the first network; performing network address translation on said packet if said packet indicates that its destination is the second network; and forwarding said translated packet to the second network if said packet indicates that its destination is the second network.
Claim 11
Dependent Claim
84 words
The method of claim 7 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 12
Dependent Claim
38 words
The method of claim 7 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 13
Dependent Claim
38 words
The method of claim 7 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 14
Dependent Claim
72 words
The method of claim 7 , further including the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 15
Independent Claim
166 words
A method for network communications in a system having a user with a PPP connection to a gateway, including the steps of: establishing a primary PPP session between the user and a first external network; receiving a first real network address for the user, said first real network address assigned by said first network; establishing a secondary network session between the gateway and a second external network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 16
Independent Claim
166 words
A method for network communications in a system having a user with a PPP connection to a gateway, including the steps of: establishing a primary PPP session between the user and a first external network; receiving a first real network address for the user, said first real network address assigned by said first network; establishing a secondary network session between the gateway and a second external network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 17
Dependent Claim
33 words
The method of claim 12 , further including the step of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 18
Dependent Claim
38 words
The method of claim 13 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 19
Dependent Claim
19 words
The method of claim 12 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 20
Dependent Claim
19 words
The method of claim 15 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 21
Dependent Claim
84 words
The method of claim 12 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 22
Dependent Claim
38 words
The method of claim 12 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 23
Dependent Claim
72 words
The method of claim 12 , further including the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 24
Independent Claim
204 words
A method for network communications in a system having a user with a PPP connection to a gateway, including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first external network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second external network; establishing a secondary PPP session between the gateway and a second network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 25
Independent Claim
204 words
A method for network communications in a system having a user with a PPP connection to a gateway, including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first external network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second external network; establishing a secondary PPP session between the gateway and a second network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 26
Dependent Claim
33 words
The method of claim 20 , further including the steps of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 27
Dependent Claim
38 words
The method of claim 21 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 28
Dependent Claim
19 words
The method of claim 20 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 29
Dependent Claim
19 words
The method of claim 23 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 30
Dependent Claim
84 words
The method of claim 20 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 31
Dependent Claim
38 words
The method of claim 20 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 32
Dependent Claim
72 words
The method of claim 20 , further including the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 33
Dependent Claim
146 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a network session initiator adapted to establish a primary PPP session between the user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network, and to store said first real network address in a non-network address translation table; said network session initiator further adapted to establish a secondary network session between the gateway and a second network; and said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network, and to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 34
Dependent Claim
146 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a network session initiator adapted to establish a primary PPP session between the user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network, and to store said first real network address in a non-network address translation table; said network session initiator further adapted to establish a secondary network session between the gateway and a second network; and said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network, and to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 35
Dependent Claim
20 words
The network gateway of claim 28 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 36
Dependent Claim
20 words
The network gateway of claim 29 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 37
Dependent Claim
206 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a request receiver adapted to receive a first PPP connection request from the user; an LCP negotiator adapted to negotiate LCP options between the user and a first network; a network session initiator adapted to establish a primary PPP session between the user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network, and to store said first real network address in a non-network address translation table; said request receiver further adapted to receive a second PPP connection request from the user; said LCP negotiator further adapted to negotiate LCP options between the user and a second network; said network session initiator further adapted to establish a secondary PPP session between the user and a second network; and said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network, and to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 38
Dependent Claim
206 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a request receiver adapted to receive a first PPP connection request from the user; an LCP negotiator adapted to negotiate LCP options between the user and a first network; a network session initiator adapted to establish a primary PPP session between the user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network, and to store said first real network address in a non-network address translation table; said request receiver further adapted to receive a second PPP connection request from the user; said LCP negotiator further adapted to negotiate LCP options between the user and a second network; said network session initiator further adapted to establish a secondary PPP session between the user and a second network; and said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network, and to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 39
Dependent Claim
20 words
The network gateway of claim 31 , wherein said primary PPP session and said secondary network sessions are tunneling sessions.
Claim 40
Dependent Claim
20 words
The network gateway of claim 32 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 41
Dependent Claim
113 words
A network gateway including: a packet receiver adapted to receive a packet sent from a user; a packet examiner adapted to examine said packet to determine if its destination is a first external network or a second external network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 42
Dependent Claim
113 words
A network gateway including: a packet receiver adapted to receive a packet sent from a user; a packet examiner adapted to examine said packet to determine if its destination is a first external network or a second external network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 43
Dependent Claim
108 words
The network gateway of claim 34 , wherein said packet examiner further includes: an address extractor adapted to extract a destination network address from said packet; a routing table searcher adapted to look up said destination network address in a routing table; a network determiner adapted to determine that said destination is said first network or said second network based upon the listing for the destination network address in the routing table; and said network determiner further adapted to determine that said destination is said first network or said second network based on a default setting if said destination network address is not listed in said routing table.
Claim 44
Dependent Claim
37 words
The network gateway of claim 34 , wherein said network address translator is further adapted to extract a source network address from the packet and apply a network address translation mapping scheme to said source network address.
Claim 45
Dependent Claim
37 words
The network gateway of claim 34 , wherein said network address translator is further adapted to extract a source network address from the packet and look up said source network address in a network address translation table.
Claim 46
Dependent Claim
98 words
The network gateway of claim 34 , wherein said packet receiver further is adapted to receive a second packet, said second packet sent from said first network or said second network, said packet examiner is further adapted to examine said second packet to determine if its source is said first network or said second network, said network address translator is further adapted to perform network address translation on said second packet if said second packet indicates that its source is said second network, and said packet forwarder is further adapted to forward said second packet to the user.
Claim 47
Dependent Claim
212 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a network session initiator adapted to establish a primary PPP session between the user and a first external network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network; said network session initiator further establish a secondary network session between the user and a second external network; said network address receiver further receive a second real network address for the user, said second real network address assigned by said second network; a packet receiver adapted to receive a packet sent by the user; a packet examiner adapted to examine said packet to determine if its destination is said first network or said second network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 48
Dependent Claim
212 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a network session initiator adapted to establish a primary PPP session between the user and a first external network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network; said network session initiator further establish a secondary network session between the user and a second external network; said network address receiver further receive a second real network address for the user, said second real network address assigned by said second network; a packet receiver adapted to receive a packet sent by the user; a packet examiner adapted to examine said packet to determine if its destination is said first network or said second network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 49
Dependent Claim
37 words
The network gateway of claim 39 , further including an NAT table storer adapted to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 50
Dependent Claim
37 words
The network gateway of claim 40 , wherein said network address translator is further adapted to extract a source network address from the packet and look up said source network address in a network address translation table.
Claim 51
Dependent Claim
20 words
The network gateway of claim 39 , wherein said primary PPP session and said secondary network sessions are tunneling sessions.
Claim 52
Dependent Claim
20 words
The network gateway of claim 42 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 53
Dependent Claim
108 words
The network gateway of claim 39 , wherein said packet examiner further includes: an address extractor adapted to extract a destination network address from said packet; a routing table searcher adapted to look up said destination network address in a routing table; a network determiner adapted to determine that said destination is said first network or said second network based upon the listing for the destination network address in the routing table; and said network determiner further adapted to determine that said destination is said first network or said second network based on a default setting if said destination network address is not listed in said routing table.
Claim 54
Dependent Claim
37 words
The network gateway of claim 39 , wherein said network address translator is further adapted to extract a source network address from the packet and apply a network address translation mapping scheme to said source network address.
Claim 55
Dependent Claim
98 words
The network gateway of claim 39 , wherein said packet receiver is further adapted to receive a second packet, said second packet sent from said first network or said second network, said packet examiner is further adapted to examine said second packet to determine if its source is said first network or said second network, said network address translator is further adapted to perform network address translation on said second packet if said second packet indicates that its source is said second network, and said packet forwarder is further adapted to forward said second packet to the user.
Claim 56
Dependent Claim
276 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a request receiver adapted to receive a first PPP connection request from the user; an LCP negotiator adapted to negotiate LCP options between the user and a first external network; a PPP session initiator adapted to establish a primary PPP session between a user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network; said request receiver further adapted to receive a second PPP connection request from the user; said LCP negotiator further adapted to negotiate LCP options between the user and a second external network; said PPP session initiator further adapted to establish a secondary PPP session between the user and a second network; said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network; a packet receiver adapted to receive a packet sent by the user; a packet examiner adapted to examine said packet to determine if its destination is said first network or said second network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to the second network if said packet indicates that its destination is said second network.
Claim 57
Dependent Claim
276 words
A network gateway for use in a system having a user with a PPP connection to the gateway, including: a request receiver adapted to receive a first PPP connection request from the user; an LCP negotiator adapted to negotiate LCP options between the user and a first external network; a PPP session initiator adapted to establish a primary PPP session between a user and a first network; a network address receiver adapted to receive a first real network address for the user, said first real network address assigned by said first network; said request receiver further adapted to receive a second PPP connection request from the user; said LCP negotiator further adapted to negotiate LCP options between the user and a second external network; said PPP session initiator further adapted to establish a secondary PPP session between the user and a second network; said network address receiver further adapted to receive a second real network address for the user, said second real network address assigned by said second network; a packet receiver adapted to receive a packet sent by the user; a packet examiner adapted to examine said packet to determine if its destination is said first network or said second network; a packet forwarder adapted to forward said packet directly to the first network if said packet indicates that its destination is said first network; a network address translator adapted to perform network address translation on said packet if said packet indicates that its destination is said second network; and said packet forwarder further adapted to forward said translated packet to the second network if said packet indicates that its destination is said second network.
Claim 58
Dependent Claim
37 words
The network gateway of claim 47 , further including an NAT table storer adapted to store said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 59
Dependent Claim
37 words
The network gateway of claim 48 , wherein said network address translator is further adapted to extract a source network address from the packet and look up said source network address in a network address translation table.
Claim 60
Dependent Claim
20 words
The network gateway of claim 47 , wherein said primary PPP session and said secondary network sessions are tunneling sessions.
Claim 61
Dependent Claim
20 words
The network gateway of claim 50 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 62
Dependent Claim
108 words
The network gateway of claim 47 , wherein said packet examiner further includes: an address extractor adapted to extract a destination network address from said packet; a routing table searcher adapted to look up said destination network address in a routing table; a network determiner adapted to determine that said destination is said first network or said second network based upon the listing for the destination network address in the routing table; and said network determiner further adapted to determine that said destination is said first network or said second network based on a default setting if said destination network address is not listed in said routing table.
Claim 63
Dependent Claim
37 words
The network gateway of claim 47 , wherein said network address translator is further adapted to extract a source network address from the packet and apply a network address translation mapping scheme to said source network address.
Claim 64
Dependent Claim
98 words
The network gateway of claim 47 , wherein said packet receiver is further adapted to receive a second packet, said second packet sent from said first network or said second network, said packet examiner is further adapted to examine said second packet to determine if its source is said first network or said second network, said network address translator is further adapted to perform network address translation on said second packet if said second packet indicates that its source is said second network, and said packet forwarder is further adapted to forward said second packet to the user.
Claim 65
Dependent Claim
142 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for establishing multiple network connections for a user having a PPP connection to a gateway, said method steps including the steps of: establishing a primary PPP session between the user and a first network; receiving a first real network address for said user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; establishing a secondary network session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 66
Dependent Claim
142 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for establishing multiple network connections for a user having a PPP connection to a gateway, said method steps including the steps of: establishing a primary PPP session between the user and a first network; receiving a first real network address for said user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; establishing a secondary network session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 67
Dependent Claim
38 words
The program storage device of claim 55 , wherein the method further includes the step of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 68
Dependent Claim
21 words
The program storage device of claim 55 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 69
Dependent Claim
21 words
The program storage device of claim 57 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 70
Dependent Claim
180 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for establishing multiple network connections for a user having a PPP connection to a gateway, said method steps including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second network; establishing a secondary PPP session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 71
Dependent Claim
180 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for establishing multiple network connections for a user having a PPP connection to a gateway, said method steps including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; storing said first real network address in a non-network address translation table; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second network; establishing a secondary PPP session between the gateway and a second network; and receiving a second real network address for the user, said second real network address assigned by said second network; and storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 72
Dependent Claim
38 words
The program storage device of claim 59 , wherein the method further includes the step of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 73
Dependent Claim
21 words
The program storage device of claim 59 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 74
Dependent Claim
21 words
The program storage device of claim 61 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 75
Dependent Claim
130 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for communications routing in a system in which a user is connected to a first external network and a second external network, the method including the steps of: receiving a packet sent from the user; examining said packet to determine if its destination is the first network or the second network; forwarding said packet directly to the first network if said packet indicates that its destination is the first network; performing network address translation on said packet if said packet indicates that its destination is the second network; and forwarding said translated packet to the second network if said packet indicates that its destination is the second network.
Claim 76
Dependent Claim
130 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for communications routing in a system in which a user is connected to a first external network and a second external network, the method including the steps of: receiving a packet sent from the user; examining said packet to determine if its destination is the first network or the second network; forwarding said packet directly to the first network if said packet indicates that its destination is the first network; performing network address translation on said packet if said packet indicates that its destination is the second network; and forwarding said translated packet to the second network if said packet indicates that its destination is the second network.
Claim 77
Dependent Claim
86 words
The program storage device of claim 63 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 78
Dependent Claim
40 words
The program storage device of claim 63 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 79
Dependent Claim
40 words
The program storage device of claim 63 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 80
Dependent Claim
77 words
The program storage device of claim 63 , wherein the method further includes the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 81
Dependent Claim
188 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for network communications in a system having a user with a PPP connection to a gateway, the method including the steps of: establishing a primary PPP session between the user and a first external network; receiving a first real network address for the user, said first real network address assigned by said first network; establishing a secondary network session between the gateway and a second external network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 82
Dependent Claim
188 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for network communications in a system having a user with a PPP connection to a gateway, the method including the steps of: establishing a primary PPP session between the user and a first external network; receiving a first real network address for the user, said first real network address assigned by said first network; establishing a secondary network session between the gateway and a second external network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 83
Dependent Claim
38 words
The program storage device of claim 68 , wherein the method further includes the step of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 84
Dependent Claim
40 words
The program storage device of claim 69 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 85
Dependent Claim
21 words
The program storage device of claim 68 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 86
Dependent Claim
21 words
The program storage device of claim 71 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 87
Dependent Claim
86 words
The program storage device of claim 69 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 88
Dependent Claim
40 words
The program storage device of claim 69 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 89
Dependent Claim
77 words
The program storage device of claim 69 , wherein the method further includes the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 90
Dependent Claim
226 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for network communications in a system having a user with a PPP connection to a gateway, the method including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first external network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second external network; establishing a secondary PPP session between the gateway and a second network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 91
Dependent Claim
226 words
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for network communications in a system having a user with a PPP connection to a gateway, the method including the steps of: receiving a first PPP connection request from the user; negotiating LCP options between the user and a first external network; establishing a primary PPP session between the user and a first network; receiving a first real network address for the user, said first real network address assigned by said first network; receiving a second PPP connection request from the user; negotiating LCP options between the user and a second external network; establishing a secondary PPP session between the gateway and a second network; receiving a second real network address for the user, said second real network address assigned by said second network; receiving a packet sent by the user; examining said packet to determine if its destination is said first network or said second network; forwarding said packet directly to the first network if said packet indicates that its destination is said first network; performing network address translation on said packet if said packet indicates that its destination is said second network; and forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 92
Dependent Claim
38 words
The program storage device of claim 76 , wherein the method further includes the step of storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 93
Dependent Claim
40 words
The program storage device of claim 77 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and looking up said source network address in said network address translation table.
Claim 94
Dependent Claim
77 words
The program storage device of claim 77 , wherein the method further includes the steps of: receiving a second packet, said second packet sent from said first network or said second network; examining said second packet to determine if its source is said first network or said second network; performing network address translation on said second packet if said second packet indicates that its source is said second network; and forwarding said second packet to the user.
Claim 95
Dependent Claim
21 words
The program storage device of claim 77 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 96
Dependent Claim
21 words
The program storage device of claim 80 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 97
Dependent Claim
86 words
The program storage device of claim 77 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 98
Dependent Claim
40 words
The program storage device of claim 77 , wherein said performing network address translation step includes the steps of: extracting a source network address from the packet; and applying a network address translation mapping scheme to said source network address.
Claim 99
Dependent Claim
182 words
A network gateway for network communications in a system having a user with a PPP connection to the gateway, including: means for establishing a primary PPP session between the user and a first external network; means for receiving a first real network address for the user, said first real network address assigned by said first network; means for establishing a secondary network session between the gateway and a second external network; means for receiving a second real network address for the user, said second real network address assigned by said second network; means for receiving a packet sent by the user; means for examining said packet to determine if its destination is said first network or said second network; means for forwarding said packet directly to the first network if said packet indicates that its destination is said first network; means for performing network address translation on said packet if said packet indicates that its destination is said second network; and means for forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 100
Dependent Claim
182 words
A network gateway for network communications in a system having a user with a PPP connection to the gateway, including: means for establishing a primary PPP session between the user and a first external network; means for receiving a first real network address for the user, said first real network address assigned by said first network; means for establishing a secondary network session between the gateway and a second external network; means for receiving a second real network address for the user, said second real network address assigned by said second network; means for receiving a packet sent by the user; means for examining said packet to determine if its destination is said first network or said second network; means for forwarding said packet directly to the first network if said packet indicates that its destination is said first network; means for performing network address translation on said packet if said packet indicates that its destination is said second network; and means for forwarding said translated packet to said second network if said packet indicates that its destination is said second network.
Claim 101
Dependent Claim
33 words
The network gateway of claim 84 , further including means for storing said second real network address in a network address translation table in an entry corresponding to said first real network address.
Claim 102
Dependent Claim
41 words
The network gateway of claim 85 , wherein said means for performing network address translation include means for extracting a source network address from the packet and means for looking up said source network address in said network address translation table.
Claim 103
Dependent Claim
20 words
The network gateway of claim 84 , wherein said primary PPP session and said secondary network session are tunneling sessions.
Claim 104
Dependent Claim
20 words
The network gateway of claim 87 , wherein said primary PPP session and said secondary network session are L2TP sessions.
Claim 105
Dependent Claim
85 words
The network gateway of claim 84 , wherein said examining step further includes the steps of: extracting a destination network address from the packet; looking up said destination network address in a routing table; determining that said destination is the first or second network based upon the listing for the destination network address in the routing table; and determining that said destination is the first or second network based on a default setting if said destination network address is not listed in said routing table.
Claim 106
Dependent Claim
41 words
The network gateway of claim 84 , wherein said means for performing network address translation include means for extracting a source network address from the packet and means for applying a network address translation mapping scheme to source destination network address.
Claim 107
Dependent Claim
78 words
The network gateway of claim 84 , further including: means for receiving a second packet, said second packet sent from said first network or said second network; means for examining said second packet to determine if its source is said first network or said second network; means for performing network address translation on said second packet if said second packet indicates that its source is said second network; and means for forwarding said second packet to the user.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-29 | 2005-10-29 | 2006-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-29 | 2009-10-29 | 2010-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-29 | 2013-10-29 | 2014-04-30 | $7700.00 | Window Closed / Lapsed |