Method and system for introducing TCP protocol stack in Netfilter architecture, intermediate device, and medium

A technology of intermediate equipment and protocol stack, which is applied in the field of introducing TCP protocol stack, can solve the problems of not having TCP protocol stack and limited functions of intermediate detection equipment, and achieve the effect of avoiding confusion

Active Publication Date: 2018-07-03
BEIJING VENUS INFORMATION SECURITY TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the technical problem to be solved in the present invention is to provide a method, system, intermediate device, and medium for introducing a TCP protocol stack under the Netfilter architecture, which solves the problem of not having a TCP protocol stack under the Netfilter architecture, thereby causing existing intermediate detection equipment Issues with limited functionality

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  • Method and system for introducing TCP protocol stack in Netfilter architecture, intermediate device, and medium
  • Method and system for introducing TCP protocol stack in Netfilter architecture, intermediate device, and medium
  • Method and system for introducing TCP protocol stack in Netfilter architecture, intermediate device, and medium

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the spirit of the disclosure of the present invention will be clearly described below with the accompanying drawings and detailed descriptions. Any person skilled in the art will understand the embodiments of the present invention. , when it can be changed and modified by the technology taught in the content of the present invention, it does not depart from the spirit and scope of the content of the present invention.

[0026] The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention. In addition, elements / members with the same or similar numbers used in the drawings and embodiments are used to represent the same or similar parts.

[0027] As used herein, "first", "second", ... etc. do not specifically refer to a sequence or order, nor are they used to limit the p...

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Abstract

The invention provides a method and system for introducing a TCP protocol stack in a Netfilter architecture, an intermediate device, and a medium. The method includes: recording, by using a first connection trace, a connection status between the intermediate device and a transmitting end; describing and recording, by using a first TCP protocol control block associated with the first connection trace, TCP protocol connection attributes of data interaction between the intermediate device and the transmitting end; recording, by using a second connection trace associated with the first connectiontrace, a connection status between the intermediate device and a receiving end; and describing and recording, by using a second TCP protocol control block associated with the second connection trace,TCP protocol connection attributes of data interaction between the intermediate device and the receiving end. According to the invention, various specific mechanisms of the TCP protocol stack can be used to ensure reliable transmission of data packets between the transmitting end and the receiving end through the intermediate device.

Description

technical field [0001] The present invention relates to the technical field of computer safety communication, in particular to a method for utilizing TCP protocol communication under a Netfilter (network filter) framework, specifically a method, a system, an intermediate device and a medium for introducing a TCP protocol stack under a Netfilter framework. Background technique [0002] Netfilter is a new generation of Linux firewall mechanism after Linux2.4.x. It is a subsystem of the Linux kernel, including connection tracking (CT), data packet filtering, network address translation, transparent proxy, packet speed limit, data packet modification and other functions module. In addition, Netfilter adopts a modular design and has good scalability. Five detection points (HOOK) are set in the Netfilter architecture, that is, five hook functions. Users can register detection processing functions at different detection points to realize network security functions. Due to the abov...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08H04L1/16
CPCH04L69/163H04L1/1607H04L63/166H04L67/56
Inventor 张少华赵东宾郭一波李志捷何艳华张元立
Owner BEIJING VENUS INFORMATION SECURITY TECH
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