Connection synchronization method, device and medium based on security gateway deep packet inspection
A technology of deep packet inspection and security gateway, which is applied to computer equipment and computer-readable storage media, in the field of connection synchronization based on deep packet inspection of security gateway, and can solve the problems of connection residual of backup device, unrecoverable connection, service interruption, etc.
Active Publication Date: 2020-11-06
BEIJING TOPSEC NETWORK SECURITY TECH +2
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Problems solved by technology
If there are a large number of residual connections in the backup system, these connections will not be reclaimed, which will have a great impact on the reliability of system redundancy backup, and even business interruption will occur when the system is switched.
[0004] To sum up, it is necessary to solve the problem that the deleted message reaches the backup device before the newly created message, resulting in the residual connection of the backup device
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In order to solve the problems in the prior art, the present invention provides a connection synchronization method based on security gateway deep packet detection, see figure 1 shown, including:
[0034] Step S001: Set the receive message buffer area according to the preset length at the message receiving end, and set the receive message buffer timeout time according to the preset duration;
[0035] Step S002: When the message receiving end receives t...
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The invention discloses a connection synchronization method, device and medium based on deep packet detection of a security gateway. The method includes: setting a receiving message buffer area at a message receiving end according to a preset length; when the message receiving end receives a message from a message sending end When deleting a connection message, check whether there is a new connection corresponding to the quintuple information according to the quintuple information of the deleted connection message; if there is no new connection corresponding to the quintuple information, cache the deleted connection message to the receiving message buffer . The invention improves the reliability of the DPI application in the dual-machine system by caching the delete connection message that fails to be executed.
Description
technical field [0001] The invention relates to the field of network communication and network security, in particular to a connection synchronization method, device, computer equipment and computer-readable storage medium based on security gateway deep packet detection. Background technique [0002] In all kinds of existing network environments, the security gateway is an important network security device, and generally adopts a dual-machine redundant backup mode. In actual use, due to the increasingly complex application and security gateway software codes, the security gateway interacts with the network layer SQL (Structured Query Language)*NET (Network Transaction) in the File Transfer Protocol (File Transfer Protocol, FTP) and oracle. , Session Initiation Protocol (SessionInitiation Protocol, SIP), audio and video transmission protocol (H.323) and other application protocol processing, it is necessary to synchronize the connection information of the main device, that is...
Claims
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IPC IPC(8): H04L12/26H04L12/863H04L29/08
CPCH04L43/028H04L47/625H04L67/5682
Inventor 孙峰张国兴
Owner BEIJING TOPSEC NETWORK SECURITY TECH