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File transfer protocol (FTP) data transmission method and system

A data transmission and FTP server technology, applied in transmission systems, electrical components, etc., can solve the problems of increasing the performance overhead of IVI equipment and not supporting data packets, etc.

Inactive Publication Date: 2015-06-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, IVI technology can perform stateless address translation for data such as Hypertext Transfer Protocol (HTTP, Hyper Text Transfer Protocol), Secure Shell Protocol (SSH, Secure Shell), and for File Transfer Protocol (FTP, File Transfer Protocol) data packets and Not supported, you need to add an additional application layer gateway (ALG) on the IVI device, but the ALG will greatly increase the performance overhead of the IVI device
In addition, when the FTP client is not sure whether the FTP server is located in the same IP protocol network (IPv6 network or IPv4 network), there is currently no means to support the intercommunication between the FTP client and the FTP server

Method used

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  • File transfer protocol (FTP) data transmission method and system
  • File transfer protocol (FTP) data transmission method and system
  • File transfer protocol (FTP) data transmission method and system

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Embodiment Construction

[0035] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0036] figure 1 Shown is the method flowchart that the present invention realizes FTP data transmission, comprises the following steps:

[0037] Step 101, establishing a control session between an FTP client and an FTP server.

[0038] Step 102, determine the establishment mode of the data session between the FTP client and the FTP server. Specifically, if it is the active mode, perform step 103; if it is the passive mode, perform step 105.

[0039] Step 103, the FTP client sends its own IP address and temporary port number to the FTP server in the control session through the PORT command or the EPRT command.

[0040] In step 104, the FTP server establishes a data session with the IP address of the FTP client as the destination address and the temporary port as the destination port.

[0041] Step 105, the FTP serv...

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Abstract

The invention discloses a file transfer protocol (FTP) data transmission method and an FTP data transmission system. If a data session creation mode is an active mode, an FTP client transmits own Internet protocol (IP) address and a temporary port number to an FTP server in a control session by a PORT command or an EPRT command for the data session creation of the FTP server. If the data creation mode is a passive mode, the FTP server transmits own IP address and the temporary port number to the FTP client in the control session by a PASV command or an EPSV command transmitted by the FTP client for the data session creation of the FTP client. By the method and the system, the communication of the FTP client and the FTP server between an Internet protocol Version 6 (IPv6) network and an IPv4 network can be realized under the condition of not adding an application layer gateway.

Description

technical field [0001] The invention relates to an FTP protocol data conversion technology from an IPv6 network to an IPv4 network, in particular to a method and a system for realizing FTP data transmission. Background technique [0002] IVI is a protocol translation technology that can solve the network layer translation of Internet Protocol Version 6 (IPv6, Internet Protocol Version 6) network and Internet Protocol Version 4 (IPv4, Internet Protocol Version 4) network packets. The main idea of ​​the IVI address mapping algorithm is to map a part of addresses from the global IPv4 address space (IPG4) to the global IPv6 address space (IPG6). [0003] In IPG4, each operator takes out a part of IPv4 addresses to be used in IVI transition. The taken out addresses are called IVI4(i) addresses, which cannot be assigned to actual physical hosts. As the IVI transition progresses, the scope of IVI4(i) is gradually expanded, and when all IPv4 addresses are not used by physical hosts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/12
Inventor 赵钦陈观兰琚凯
Owner ZTE CORP
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