CN101901167A - Multi-network security auditing method and system under multi-CPU architecture - Google Patents
Multi-network security auditing method and system under multi-CPU architecture Download PDFInfo
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Abstract
The invention provides a multi-network security auditing method and a multi-network security auditing system under a multi-CPU architecture, which realize the auditing of the multiple sub-service networks by replacing a high-performance server or cluster with common equipment with multi-network card processors. The method comprises the following steps of: operating multiple network auditing-monitoring programs according to the number of network cards and the number of the CPUs; and manually setting CPU affinity, wherein the setting of the CPU affinity is a process of allowing a process to be run on a specified CPU, transferred among the processors as required and bound with the CPUs, and after all network monitoring programs are run on different CPUs for one service cycle(the default is one week, and the cycle is mainly determined according to service traffic) according to a certain algorithm, the CPU affinities of all programs are adjusted according to the data such as network traffic, a peak value, utilization rate of CPU and the like, so that the treating ability of CPUs is fully utilized to finish the complex auditing work.
Description
Technical field
The present invention is multi-network security auditing method and the system under a kind of multi-CPU architecture, belongs to the integrated and application technology of computer system, is used for many network interface cards of network audit management software multinuclear device network auditing system.
Background technology
Along with popularizing of information and network technology, the core business infosystem of government and enterprises and institutions is networking constantly, and the information security risk that faces increases day by day; On the other hand, in order to strengthen internal control, the competent authorities of state compulsion office and industry have issued various laws and regulations and guides of closing rule and internal control aspect in succession.Under these several situations, the system that carries out comprehensive audit at operation system in the network is more and more important.The business network audit system all is a server apparatus generally, and in enterprises and institutions, business network generally all is made up of a plurality of subservice networks.At the business network that a plurality of subservice networks are arranged, we generally adopt the equipment of multistage deployment way or many network interface cards to audit.The classification deployment way can improve auditability, but needs many cover auditing systems can strengthen audit cost greatly, needs the unified Analysis deal with data simultaneously, increasing network traffics that also can be artificial.The shortcoming that many network card equipments can avoid classification to dispose, but the data that many network card equipments need be audited and be obtained from a plurality of network interface cards than higher, need the data processing amount can be very big to the requirement of system, in order to improve performance, generally can select high performance many cpu servers for use.
Many CPU equipment generally all adopts the processing mode of SMP at present known linux kernel.For the equilibrium of maintenance task between CPU (process) load, task can be distributed again: task is moved on the light CPU of load from the heavy CPU of load.The scheduler working load equilibrium (load balancing) of Linux latest edition kernel provides this function.Every a time period, processor can check all whether the load of CPU is unbalanced; If load is unbalanced, processor will carry out a task balance operation between CPU.In this process, the buffer memory of new CPU need read in data in the buffer memory for the task that migration is come.If it is very high that certain task data processing power needs, will cause load unbalanced always so, task will constantly be switched on different processors, software to the high data-handling capacity of needs has very big influence, if can't reach the performance requirement that system need reach, need high-performance server or cluster just can finish the business network of many subservices of audit network with general many CPU equipment.If the utilization rate of Control Software CPU that can be artificial then can increase substantially performance, use general server just can replace high-performance server or cluster to reach the performance requirement of software needs.
Goal of the invention
The present invention improves at above-mentioned the deficiencies in the prior art with to it just and imagines multi-network security auditing method and the system that has proposed under a kind of multi-CPU architecture, its objective is and improve the performance of business network auditing system in many network interface cards multiprocessor machine as far as possible, conventional equipment with many network interface cards multiprocessor replaces high-performance server or cluster, realizes the audit to many subservices network.The present invention moves a plurality of network audit oracle listeners according to network interface card quantity and CPU quantity, the CPU compatibility manually is set, the compatibility that CPU is set is meant that process can move specifying on the CPU, and can between processor, move as required, the process of process binding CPU, each network monitoring program is according to certain algorithm, operate on the different CPU, move a service period (one week of acquiescence, mainly determine the cycle) according to service traffics, according to network traffics, peak value, data such as CPU usage are readjusted the compatibility of each program CPU, make full use of the processing power of CPU, finish complicated audit work.
The objective of the invention is to be achieved through the following technical solutions:
The present invention proposes the multi-network security auditing system under a kind of multi-CPU architecture, comprise the home server and the network equipment, it is characterized in that: this system is made up of the WEB service module of audit engine and business network auditing system, wherein, the audit engine is formed by starting module, communication module, coordinating control module and subservice Technology of Network Sniffer, wherein:
Starting module is the establishment and the initialization module of other module, obtains network interface card information and processor information from home server, determines subservice Technology of Network Sniffer Starting mode and CPU compatibility;
The WEB service module of communication module difference connexon business network sniffer and business network auditing system, pass through communication module, the subservice Technology of Network Sniffer can obtain the real-time policy that the WEB service module of business network auditing system issues in real time, and renewal audit strategy that can be real-time;
Coordinating control module is connected with the subservice Technology of Network Sniffer, is used for adjusting once more according to actual flow the CPU compatibility of subservice Technology of Network Sniffer;
The effect of subservice Technology of Network Sniffer is to catch packet, distribute different packets to processing and rule module through session management from sub-network with promiscuous mode, obtain needed information, it is made up of packet capturing module, session management module and processing data packets and rule match module, wherein:
The packet capturing module is connected with session management module, is used for catching packet from sub-network;
Session management module is connected with processing data packets and rule match module, will catch packet from sub-network and carry out the session processing;
Processing data packets and rule match module are used for processing data packets and rule match, therefrom obtain satisfactory data.
Technical solution of the present invention also proposes a kind of method that is used for the multi-network security auditing system under the above-mentioned multi-CPU architecture, it is characterized in that: this algorithm is that step is:
(1), starts M sub-business network sniffer according to subservice the number networks M;
(2) according to processor quantity N, to bind with the subservice Technology of Network Sniffer, the rule of binding is:
If N 〉=M, M sub-business network sniffer is bundled on preceding M the CPU processor successively;
If N<M, top n subservice Netz niffer is bundled on N the CPU processor successively;
If M-N 〉=N, preceding 2N-N sub-business network sniffer is bundled on N the CPU processor successively;
If M-2N 〉=N, preceding 3N-2N sub-business network sniffer is bundled on N the CPU processor successively;
And the like;
(3) in the operational process, each subservice network traffic data gap is bigger, write down each subservice Technology of Network Sniffer network throughput, the per second issued transaction number of each minute, calculate working hour mean value, inoperative period mean value, peak value, the peak value period of one-period, the utilization rate of CPU again, redefine the compatibility of subservice Technology of Network Sniffer CPU, the mode that redefines subservice Technology of Network Sniffer CPU compatibility is divided following two kinds:
The utilization rate of A, the working hour flow mean value according to the one-period of each subservice network, peak flow, peak value period, CPU is reaffirmed the CPU compatibility of each subservice Technology of Network Sniffer;
When B, the CPU usage that runs into certain subservice Technology of Network Sniffer, flow are far longer than other subservice Technology of Network Sniffer, utilization rate according to the working hour flow mean value of the one-period of each subservice network, peak flow, peak value period, CPU, readjust the CPU compatibility of subservice Technology of Network Sniffer, in the time of can not getting a desired effect, revise the operational mode of subservice Technology of Network Sniffer, make session management module start a plurality of processing data packets, strategy matching module, arrive the load balancing of CPU.
Description of drawings
Fig. 1 is the audit structural representation of engine of the present invention
Fig. 2 is the structural representation of subservice Technology of Network Sniffer
Fig. 3 is audit engine dynamic operational figure
Fig. 4 is the service chart of audit engine
Embodiment
Below with reference to drawings and Examples technical solution of the present invention is further described:
Shown in accompanying drawing 1, starting module 1 is basic module, and major responsibility is to be responsible for the establishment and the initial work of other several modules.Obtain network interface card information and processor information from home server, determine the Starting mode of subservice Technology of Network Sniffer 4 and the CPU compatibility of subservice Technology of Network Sniffer 4, use each subservice Technology of Network Sniffer 4 of BASH script startup then, and set the compatibility of its CPU.
The responsibility of coordinating control module 3 is to adjust the CPU compatibility of business network sniffer 4 once more according to actual flow.System's operation one-period, the cycle can be according to the characteristics adjustment of business network, and default cycles is a working day Friday, readjusts the CPU compatibility according to actual flow, and coordinating control module 3 is to realize with the BASH script.
Shown in accompanying drawing 2, subservice Technology of Network Sniffer 4 is main modular of audit engine, also is the main module that consumes the CPU time sheet in the audit engine.It is made up of packet capturing module 6, session management module 7 and processing data packets and rule match module 8.Subservice Technology of Network Sniffer 4 with promiscuous mode from subservice network acquisition packet, distribute different packets in processing and rule module 8 through session management module 7, subservice Technology of Network Sniffer 4 can be reset compatibility according to each subservice network traffic conditions.
Processing data packets and rule match module 8 are used for processing data packets and rule match, therefrom obtain satisfactory data.
Shown in accompanying drawing 3, the step of the dynamic operation method that adopts in the multi-network security auditing system of technical solution of the present invention under multi-CPU architecture is:
(1), starts M sub-business network sniffer (4) according to subservice the number networks M;
(2) according to processor quantity N, to bind with subservice Technology of Network Sniffer (4), the rule of binding is:
If N 〉=M, M sub-business network sniffer is bundled on preceding M the CPU processor successively;
If N<M, top n subservice Netz niffer is bundled on N the CPU processor successively;
If M-N 〉=N, preceding 2N-N sub-business network sniffer is bundled on N the CPU processor successively;
If M-2N 〉=N, preceding 3N-2N sub-business network sniffer is bundled on N the CPU processor successively;
And the like;
(3) in the operational process, write down each subservice Technology of Network Sniffer network throughput, the per second issued transaction number of 4 each minutes, calculate working hour mean value, inoperative period mean value, peak value, the peak value period of one-period, the utilization rate of CPU again, redefine the CPU compatibility of subservice Technology of Network Sniffer 4, the mode that redefines the CPU compatibility of subservice Technology of Network Sniffer 4 is divided following two kinds:
The utilization rate of A, the working hour flow mean value according to the one-period of each subservice network, peak flow, peak value period, CPU is reaffirmed the CPU compatibility of each subservice Technology of Network Sniffer 4.Such as N CPU, 2N professional subnet, when then starting module promoter business network sniffer 4, CPU of per two sub-business network bindings.Behind the operation one-period,, adjust the CPU compatibility of a few sub-business network sniffers 4, thereby reach the reasonable utilization of CPU according to the data of record.
When B, the CPU usage that runs into certain subservice Technology of Network Sniffer 4, flow are far longer than other subservice Technology of Network Sniffer 4, utilization rate according to the working hour flow mean value of the one-period of each subservice network, peak flow, peak value period, CPU, readjust the CPU compatibility of subservice Technology of Network Sniffer 4, in the time of can not getting a desired effect, revise the operational mode of subservice Technology of Network Sniffer 4, make session management module 7 start a plurality of processing data packets, strategy matching module, arrive the load balancing of CPU.
The audit engine uses C language and BASH script to think that the mode of combination realizes, indispensable part as the business network auditing system occurs, run in the network with the mode of the WEB service module 5 of business network auditing system (be used for configuration audit engine, present the network data information that the audit engine is handled) with server.
As shown in Figure 4, suppose that audit server has in the engine-operated business network that four sub-business networks are arranged of 4 CPU audit, the data traffic of one of them subservice network is 3 times of other 3 sub-business datum flow sums, the actual conditions of engine after operation a period of time of then auditing.
Compared with prior art, the advantage of technical solution of the present invention is that the conventional equipment with many network interface cards multiprocessor replaces high-performance server or cluster, realizes the audit to many subservices network, to a great extent Cost reduction.
Claims (2)
1. the multi-network security auditing system under the multi-CPU architecture, comprise the home server and the network equipment, it is characterized in that: this system is made up of the WEB service module (5) of audit engine and business network auditing system, wherein, the audit engine is formed by starting module (1), communication module (2), coordinating control module (3) and subservice Technology of Network Sniffer (4), wherein:
Starting module (1) is the establishment and the initialization module of other module, obtains network interface card information and processor information from home server, determines subservice Technology of Network Sniffer (4) Starting mode and CPU compatibility;
The WEB service module (5) of communication module (2) difference connexon business network sniffer (4) and business network auditing system, by communication module (2), subservice Technology of Network Sniffer (4) can obtain the real-time policy that the WEB service module (5) of business network auditing system issues in real time, and renewal audit strategy that can be real-time;
Coordinating control module (3) is connected with subservice Technology of Network Sniffer (4), is used for adjusting once more according to actual flow the CPU compatibility of subservice Technology of Network Sniffer (4);
The effect of subservice Technology of Network Sniffer (4) is to catch packet, distribute different packets to processing and rule module through session management from sub-network with promiscuous mode, obtain needed information, it is made up of packet capturing module (6), session management module (7) and processing data packets and rule match module (8), wherein:
Packet capturing module (6) is connected with session management module (7), is used for catching packet from sub-network;
Session management module (7) is connected with processing data packets and rule match module (8), will catch packet from sub-network and carry out the session processing;
Processing data packets and rule match module (8) are used for processing data packets and rule match, therefrom obtain satisfactory data.
2. be used for the method for the multi-network security auditing system under the aforesaid right requirement 1 described multi-CPU architecture, it is characterized in that: this algorithm is that step is:
(1), starts M sub-business network sniffer (4) according to subservice the number networks M;
(2) according to processor quantity N, to bind with subservice Technology of Network Sniffer (4), the rule of binding is:
If N 〉=M, M sub-business network sniffer is bundled on preceding M the CPU processor successively;
If N<M, top n subservice Netz niffer is bundled on N the CPU processor successively;
If M-N 〉=N, preceding 2N-N sub-business network sniffer is bundled on N the CPU processor successively;
If M-2N 〉=N, preceding 3N-2N sub-business network sniffer is bundled on N the CPU processor successively;
And the like;
(3) in the operational process, write down each subservice Technology of Network Sniffer (4) network throughput, the per second issued transaction number of each minute, calculate working hour mean value, inoperative period mean value, peak value, the peak value period of one-period, the utilization rate of CPU again, redefine the compatibility of subservice Technology of Network Sniffer (4) CPU, the mode that redefines subservice Technology of Network Sniffer (4) CPU compatibility is divided following two kinds:
The utilization rate of A, the working hour flow mean value according to the one-period of each subservice network, peak flow, peak value period, CPU is reaffirmed the CPU compatibility of each subservice Technology of Network Sniffer (4);
B, when the CPU usage, the flow that run into certain subservice Technology of Network Sniffer (4) are far longer than other subservice Technology of Network Sniffer (4), utilization rate according to the working hour flow mean value of the one-period of each subservice network, peak flow, peak value period, CPU, readjust the CPU compatibility of subservice Technology of Network Sniffer (4), in the time of can not getting a desired effect, revise the operational mode of subservice Technology of Network Sniffer (4), make session management module (7) start a plurality of processing data packets, strategy matching module, arrive the load balancing of CPU.
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