39 results about "NAT64" patented technology

An apparatus and method are described for translating between IPv6 and IPv4 addresses on a computer network. For example, one embodiment of a method for generating an Internet Protocol Version 6 (IPv6) IPv6 address from an Internet Protocol Version 4 (IPv4) IPv4 address literal comprises: constructing a host name for a domain name query at a first host by combining the IPv4 address literal with a domain name of a first domain name server, the first domain name server configured to interpret the host name containing the IPv4 address literal to generate an A record including the IPv4 address; wherein the A record is usable to generate a synthetic IPv6 address, the synthetic IPv6 address including a first portion identifying a network address translation (NAT) 64 server and a second portion identifying an IPv4 host associated with the IPv4 address literal; and receiving the synthetic IPv6 address at the first host, the synthetic IPv6 address usable by the first host to connect to the IPv4 host through the NAT64 server.

The present invention discloses a system and method for achieving intercommunication between an IPv4 network and an IPv6 network based on an NAT64, and relates to the field of an IPv6 transitory technology. The method includes the following steps: ensuring that an NAT64 module is connected to the IPv4 network and the IPv6 network to achieve global enabling and interface enabling of functions of the NAT64; receiving, by the NAT64 module, a data message sent from a network side, updating a dynamic table, establishing address mapping information which maintains a sub-module, and obtaining an address 5-tuple flow after translation according to the protocol version of the data message; performing, by the NAT64 module, protocol translation on an IPv4 message head and an IPv6 message head; and forwarding, by an IPv4/IPv6 message forwarding sub-module, a new data message completing the translation of address and the translation of a protocol to a target address. Relevant functions of the NAT64 can be fully achieved on a conventional digital communication product, the performance consumption of equipment and the usage of system resources are effectively reduced, and the working efficiency is increased.

The invention is suitable for the field of internet communication and provides a cross-IPv6 and IPv4 VPN inter-access method and system. When an IPv6-side VPN initiates an access message for data of an IPv4-side VPN, the method comprises the following steps: obtaining a target address according to target identification obtained through analysis of a DNS64 server, wherein the target address is carried in the data access message; obtaining an NAT64 address pool bound with the serial number of an ACL according to a source IPv6 address carried in the access message, and obtaining the VPN at the IPv4 side according to a VPN bound with the serial number of the ACL; converting the source IPv6 address into a source IPv4 address capable of being used in the VPN at the IPv4 side according to the NAT64 address pool; stripping the prefix of the target address to obtain a legal target IPv4 address; and carrying out data access message forwarding at the IPv4-side VPN through an IPv4 protocol stack according to the target IPv4 address. According to the method and system for NAT64 inter-access between different VPNs, inter-access between the different VPNs can be realized conveniently; and the system is simple and convenient to configure and high in safety performance.

The invention discloses a network access method and network conversion equipment, and aims to provide a universal network access method for a dual-stack terminal and lower processing loads of a network and a server. The network conversion equipment is arranged among networks provided by different network providers, and distributes a default route to a network terminal under management. The method comprises the following steps that: the network conversion equipment receives a network access request message sent by the network terminal according to the default route when the route is unreachable during network access through a destination address to be accessed, wherein the destination address to be accessed is an Ipv6 (Internet Protocol Version 6) address; the network conversion equipment determines an IPv4 (Internet Protocol Version 4) address corresponding to the destination address to be accessed; and the network conversion equipment performs NAT64 conversion on the network access request message, and forwards the network access request message which undergoes the NAT64 conversion to the determined IPv4 address corresponding to the destination address to be accessed.

The invention provides a method and a device for tracing an address source, relates to the field of network management and aims at solving the problem that a specific user device cannot be determined during the address source tracing of the user device in the NAT64 transition technology. The method comprises receiving a first user source tracing request which comprises at least a source IPv6 address, looking up a user information mapping table according to the IPv6 address and determining the user device information corresponding to the IPv6 address, and finally, sending the user device information to a source tracing device, wherein the user information mapping table corresponds to the user device information and the IPv6 address, and the user device information comprises at least the MAC address of the user device, Framed-IPv6-Prefix and Delegated-IPv6-Prefix.

The invention discloses a method used for sending data, an apparatus and a system thereof. When first IPv6 address information sent by an DNS server is received, IPv4 address information is extracted from the first IPv6 address information. A prefix query request is sent to a prefix discovery server PDS, wherein the prefix query request comprises the IPv4 address information and NAT64 node prefix information used for conveniently inquiring an IPv4 address information ownership network segment. When the NAT64 node prefix information sent by the PDS is received, the NAT64 node prefix information and the IPv4 address information are used to generate second IPv6 address information. An IPv6 data packet is sent to an NAT64 node related to the second IPv6 address information so that the NAT64 node translates the IPv6 data packet into an IPv4 data packet and forwards the IPv4 data packet to an assigned IPv4 server. According to different IP address network segments, corresponding prefix information is configured so that an XLAT function can be extended and usage under a multiple-gateway scene is realized.

The invention discloses a method, a device and equipment for accessing an IPv4 outer chain and a computer medium, which are applied to an IPv6 client, and the method comprises the following steps: obtaining a URL (Uniform Resource Locator) of a target IPv4 outer chain, the URL of the target IPv4 outer chain consisting of an NAT64 gateway flow guide identifier and an initial IPv4 outer chain URL; Guiding the URL of the target IPv4 outer chain to an NAT64 gateway based on the NAT64 gateway guiding identifier; And receiving data information sent by the NAT64 gateway after accessing the URL of theinitial IPv4 outer chain. According to the IPv4 external link access method, device and equipment and the computer readable storage medium, the applicability is high.

The invention provides a method, device and electronic instrument for PPTP cross in an IPv4-IPv6 intercommunication scene. The method comprises the following steps: based on a NAT64 technology, building a session mapping relation of an IPv6 client and an IPv4 server; according to the session mapping relation, converting an IPv6 request message to an IPv4 request message; modifying client Call ID and Peer's Call ID of a PPTP message in the IPv4 request message; sending the modified IPv4 request message to the IPv4 server; receiving an IPv4 response message returned by the IPv4 server, converting the IPv4 response message to an IPv6 response message, and modifying server Call ID and Peer's Call ID of the PPTP message in the IPv6 response message; sending the modified IPv6 response message tothe IPv6 client. The method is capable of, through managing the Call ID and Peer's Call ID in the request message and the response message, realizing the intercommunication of PPTP protocol data in the IPv4 and IPv6 networks, and relieving the technical problem in the prior art that the PPTP protocol message cross cannot be realized in the IPv4-IPv6 intercommunication scene.

A method for maintaining connectivity between a mobile node and a corresponding node when the mobile node connects to a foreign network, where the foreign network and the home network are Internet protocol version 6 (IPv6) networks but the corresponding node is an Internet protocol version 4 (IPv4) node. The method includes receiving at the home agent node an IPv6 care-of address, determining that the IPv6 care-of address belongs to the foreign network and that the foreign NAT64 node has a prefix to generate virtual IPv6 addresses and sending a prefix binding request message to a home NAT64 node to bind the prefix to the home address of the mobile node for translation between IPv6 and IPv4.

The invention discloses a data processing method. The method comprises the following steps: when the master station request sent by a client is received, sending the master station request to a masterstation server, updating an outer link domain name in the master station response data as a sub-domain name of a master station root domain name; and sending the updated master station response datato the client; restoring the outer link request corresponding to the sub-domain name into an outer link request corresponding to the outer link domain name; and creating an IPv4 access link to an outer link server based on an NAT64 protocol, sending the outer link request corresponding to the outer link domain name to the outer link server based on the IPv4 access link, and sending the received outer link response data to the client. The invention further discloses a device, a terminal and a storage medium. By dynamically analyzing the outer link domain name, the outer link domain name is updated to be the sub-domain name of the main station root domain name, HTTPS outer link access can be compatible, and compared with the prior art, the data interaction efficiency between the IPv6 networkand the IPv4 network is improved.

The invention discloses a load balancing system for an IPv4 terminal and IPv6 service interworking business based on an NAT64 prefix. The system comprises an NAT64 traffic load balancing system and a DNS64 server, wherein a load balancing module and an NAT64 module are arranged in the NAT64 traffic load balancing system connected with an IPv4 network and an IPv6 network respectively; and the IPv6 network accesses a web server via a domain name, and is also connected with the DNS64 server. According to the system provided by the invention, the problem that the service is slow when the load of NAT64 equipment is excessive can be overcome, and load balancing can be performed on an IPv6 data packet with the NAT64 IPv6 prefix matched and configured with a target address.

The invention provides an IPv6 transition method and device. The method comprises the steps of judging whether a destination IPv6 address of a request message contains a destination IPv4 address or not when the request message sent by an IPv6 host is received; converting a source IPv6 address of the request message into a synthesized address containing a source IPv4 address if the destination IPv6 address of the request message contains the destination IPv4 address; recording an address converting relationship of the source IPv6 address and the synthesized address; and sending the request message to an NAT64 gateway, thereby enabling the NAT64 gateway to forward the request message to an IPv4 server according to the source IPv4 address and the destination IPv4 address in the request message. Therefore, the number of table items and the number of backtrace logs on the NAT64 gateway can be reduced, and the forwarding efficiency of the NAT64 gateway is further improved.

Provided are a method for processing a NAT64 prefix, a network device and a DHCPv6 server. The method comprises: acquiring synthetic IPv6 prefixes corresponding to various network configuration information options; and sending a DHCPv6 message to a DHCPv6 server, the DHCPv6 message carrying one or more options of the synthetic IPv6 prefixes. By means of the present invention, various problems occurring due to the fact that some servers are still deployed in an IPv4 network in the IPv6/IPv4 network intercommunication process are solved; and configurations in the network are reduced; and at the same time, after NAT64 services are upgraded and are all upgraded to an IPv6 network in the later period, the network configurations are flexibly adjusted, thereby effectively reducing the complexity of system maintenance so that the maintenance becomes simple.

The embodiment of the invention relates to the technical field of communication, and discloses a message processing method, a server and a storage medium. The method comprises the following steps: performing conversion processing on an IPv6 request message by adopting NAT64 to form a first IPv4 message, wherein a destination address of the first IPv4 message is a virtual IP address of a server in a private network; converting the first IPv4 message into a second IPv4 message by adopting DNAT conversion, wherein a destination address of the second IPv4 message is a real IP address of a server in a private network; forwarding the second IPv4 message to a corresponding server in a private network, and enabling the IPv4 message processed by the NAT64 to be subjected to DNAT conversion again to realize remapping of an intranet server address, so the problem that DNAT address mapping on which a network isolation technology depends cannot be supported in an IPv6 conversion service is solved, DNAT conversion is carried out after the NAT64, the purpose of hiding an internal network structure externally is realized, and the intranet security problem is solved.

The invention discloses an optimization method for defining flow interaction in an IPv6 transition scenario based on software. The method comprises two aspects of control plane flow transfer and data plane flow transfer. According to the flow optimization method provided by the invention, a flow interaction load can be effectively reduced, and the forwarding efficiency of the conventional transition technology is obviously improved, so that sustainable development of the IPv6 transition technology is promoted; the method disclosed by the invention is applicable to major transition technologies comprising DS-Lite, Public 4over6, Lightweight 4over6, MAP-E, NAT64 and the like.

Disclosed are an NAT64 resource acquisition method and acquisition/distribution apparatus. The NAT64 resource acquisition method comprises: sending a router solicitation (RS) message to a server end device, and receiving a first router advertisement (RA) message from the server end device, wherein information carried in the RS message comprises: a pref64::/n resource request, and information carried in the first RA message comprises: pref64::/n resource information distributed according to the pref64::/n resource request; and/or, receiving a second RA message sent actively by the server end device, wherein information carried in the second RA message comprises: actively distributed pref64::/n resource information. By means of the present invention, effects of reducing complexity of maintenance and enhancing convenience in transition to IPv6 only are achieved.

The invention relates to an access service providing method and system, and relates to the technical field of communication. The access service providing method comprises the following steps: stateful NAT66 equipment receives a data packet sent to an IPv4 server by an IPv6 terminal, and the data packet comprises a first terminal IPv6 address of the IPv6 terminal and a server IPv6 address corresponding to the IPv4 server; the stateful NAT66 equipment converts the first terminal IPv6 address in the data packet into a second terminal IPv6 address corresponding to the first terminal IPv6 address, and the corresponding second terminal IPv6 address is an IPv6 address with an IPv4 attribute; the stateful NAT66 equipment is used for sending the data packet to the stateless NAT64 routing equipment according to the IPv6 routing; and the stateless NAT64 routing equipment is used for forwarding the data packet to the IPv4 server according to the IPv4 routing. According to the technical scheme, intercommunication between the IPv4 network and the IPv6 network can be realized, so that the communication performance is improved.

A method implemented in a host-node for communicating with a corresponding node through one of a plurality of available networks that includes: receiving a request to initiate a connection with the corresponding node from an application executing on a host node, sending a request to a DNS64 node for an address of the corresponding node, receiving a virtual IPv6 address for the corresponding node with a generic prefix, selecting a connection to one of the plurality of networks through which the data is to he forwarded to the corresponding node, and sending the data to the corresponding node using a virtual IPv6 address for the corresponding node with the prefix of the NAT64 node in the network of the selected connection, whereby the host node is able to maintain connectivity with the corresponding node despite having connections to the plurality of networks that each have NAT64 nodes.