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209 results about "Localhost" patented technology

In computer networking, localhost is a hostname that means this computer. It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware.

Service for NAT traversal using IPSEC

Disclosed are methods and apparatus for methods and apparatus for facilitating a secure connection between a first and a second node in a computer network where one or both of the nodes may or may not reside behind a network address translation (NAT) enabled gateway. Embodiments of the present invention provide a seamless integration by providing a uniform solution for establishing secure connections, such as IPSEC, between two nodes irrespective of whether they are behind a NAT-enabled gateway or not. In general, a gateway is operable to receive a request from a remote host for a secure connection to a local host that within the home network of the gateway. The gateway then forwards this received request to a NAT traversal service. The NAT traversal service receives the request and then automatically sends an initiation message to set up a secure session, e.g., performing authentication and exchanging keys. In a specific aspect, the setup data utilizes an IKE (Internet Key Exchange) initiation message that is sent to the originator of the request via the gateway. Upon receipt of this initiation message, the gateway is then able to set up a two way connection to allow other setup data to flow between the remote and local hosts to complete the setup session and then secure data to flow between the remote and local hosts in a secure communication session, such as in IPSec or VPN session.
Owner:CISCO TECH INC

Distributed network applications platform architecture

A system and methods that allow local access of data residing and processed on remote messaging system computers is provided. In an illustrative implementation, a plurality of messaging systems having host computers coupled to network interface units (NIUs) act as messaging system nodes (MS Nodes). The NIUs of each of the MS Nodes are interconnected to form a wide area network (WAN) such that data may be freely communicated between the MS Nodes. An exemplary messaging system architecture comprises a host computer interconnected to a NW that, itself, is interconnected to telephone networks and to external computer networks. NIUs support a number of interfaces that allow the communication of data between the NIU and the host, and between the NIU and the external telephone and computer networks. In the distributed messaging system, a call originating from a local MS Node requesting data that resides on a remote messaging system may be transferred to the remote MS Node that has the requested data. The call is processed such that a local NIU accepts the call and communicates the call to a local host. The local host processes the call and determines that the data being requested resides on a remote host. The call is then passed back to the local NIU and transferred to the appropriate NIU using the WAN for processing by the appropriate remote host having the requested data.
Owner:UNISYS CORP

Mechanisms for providing connectivity in NAT redundant/fail-over scenarios in unshared address-space

Disclosed are methods and apparatus for facilitating reliable session based communication with a local host via a subnet of redundant network devices that also implement network address translation (NAT) or the like. In general, embodiments of the present invention include mechanisms for reestablishing access to a local host after the local host's active network device has failed and been replaced by a new active network device with an address space that differs from the failed network device. In this invention, the network devices associated with the same local host also implement NAT, or the like. In brief, for each of its associated local hosts, the new active network device causes an address server to be updated with a new public address that is assigned from its address space to the local host. This update allows other remote hosts access to the local hosts by obtaining the updated address information from the address server. Communication sessions that were established prior to the failing active network device may also be retained by the new active network device. In this aspect, for each ongoing particular session between a remote host and a local host of the new active network device, the new active network device updates the remote host with a new public address assigned to local host for use in the particular session.
Owner:CISCO TECH INC

Packet forwarding method in TRILL (transparent interconnection of lots of links) network and routing bridge

The invention discloses a packet forwarding method in a TRILL (transparent interconnection of lots of links) network and a router bridge. Both an entrance RB (router bridge) and an exit RB distribute local unique labels for local ports, and an MAC (media access control) address of a local host and the labels distributed for the local ports are learnt into local MAC address table entries; an MAC address table entry corresponding to a target MAC address of a packet to be forwarded from the local host is searched by the entrance RB in a local MAC address table, TRILL encapsulation including the entrance RB, the entrance label, the exit RB and the exit label is performed for the packet to be forwarded according to search results, and the encapsulated TRILL packet is sent to the exit RB; TRILL decapsulation is performed by the exit RB for the TRILL packet, an inner layer source MAC address is learnt, the inner layer source MAC address, the entrance RB and the entrance label are learnt to the local MAC address table entries, and the decapsulated packet is forwarded according to the exit label. By adopting the method and the routing bridge, the packet forwarding based on the labels can be realized, the search of the MAC address table can be reduced, and the complexity of packet forwarding can also be reduced.
Owner:XINHUASAN INFORMATION TECH CO LTD
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