【導(dǎo)讀】對其的研究近幾年來倍受重視。傳統(tǒng)的安全策略如防火墻或VPN主要注重防護(hù)，而防。護(hù)相對進(jìn)攻來說總是滯后的。因?yàn)橛嬎銠C(jī)系統(tǒng)和應(yīng)用軟件總是包含無法預(yù)知的漏洞，一。個時間差的必要手段。入侵檢測系統(tǒng)的主要特點(diǎn)是主動防御，即在入侵行為發(fā)生之前或。正在發(fā)生時就檢測出該行為。目前的入侵檢測方法主要分為兩類：誤用檢測和異常檢測?；诋惓５臋z測技術(shù)的優(yōu)點(diǎn)在于它能夠發(fā)現(xiàn)任何企圖發(fā)掘、試探系統(tǒng)漏洞的行為，但此方法的缺陷是較高的誤報率。本文首先綜述了網(wǎng)絡(luò)安全的攻擊和防御手段及當(dāng)前的研究現(xiàn)狀。之后又介紹了四種基于統(tǒng)計的異常檢測方法，他們分別。Web訪問的異常信息進(jìn)行檢測。目前，全球使用Inter的用戶已經(jīng)超過1億，并以更快速度增長。2020年中國將成為世界上擁。據(jù)通信網(wǎng)絡(luò)的安全受到危害，將會造成重大損失，引起社會混亂和危機(jī)國家安全。對數(shù)據(jù)的保護(hù)包括數(shù)據(jù)的機(jī)密性和完整性保護(hù)，主要針對數(shù)據(jù)竊取、數(shù)。及內(nèi)部合法用戶的超越使用權(quán)限的非法活動。

　　

【正文】 ord .,Zamboni detection using autonomous agents, Computer Networks,October 2020,34(4):547570 [33] Balasubramaniyan J.,GarciaFernandez .,Spafford .,Zamboni Architecture for Intrusion Detection using Autonomous of Computer Sciences,Purdue University。Coast TR 9805。1998. [34] Neumann :Event Monitoring Enabling Responses to Anomalous Live proceedings of National Information Systems Security Conference,October,1997. [35] Neumann .,Porras with EMERALD to First USENIX Workshop on Intrusion Detection and Network Clara, California,April,–80. [36] Stephanie F.,Hofmeyr ,Somayaji A,Longstaff sense of self for unix of the 1996 IEEE Symp on Security and Privacy,IEEE Computer Society Press,Los Alamitos,CA,1996:120128. [37] Hofmeyr S A,Forrest S,Somayaji detection using sequences of system of Computer Security,1998,6:151180 [38]Hofmeyr ,Forrest by design:an artificial immune : Proceedings of 1999 GECCO Conference,San Francisco,1999:12891296 [39] Li .,Huang Y.,Huang puting immune model based on poisson procedure and rough Journal of Computers,2020, :7176 (勵曉健，黃勇，黃厚寬基于 Poisson過程和 Rough包含的計算免疫模型。計算機(jī)學(xué)報，第26卷第 1期： 7176) [40] Ludovic :a Geic Algorithm as an Alternative Tool for Security Trails Analysis,in the Proceedings of First International Symposium of Recent Advances in Intrusion Detection,1998. 54 Of Vainglory It was prettily devised of Aesop。 the fly sat upon the axletree of the chariot wheel, and said. What a dust do I raise? So are there some vain persons, that whatsoever goeths indeed! They could tell us something worth hearing, if they only knew how to talk. It39。s really a pleasure now and then to bee a mere nothing, especially when a man is as highly placed as I am. And then to think that we all, even with patent lacquer, are nothing more than insects of a moment on that anthill the earth, though we may be insects with stars and garters, places and offices! One feels quite a novice beside these venerable millionyearold boulders. On last New Year39。s eve I was reading the book, and had lost myself in it so pletely, that I fot my usual New Year39。s diversion, namely, the wild hunt to Amack. Ah, you don39。t know what that is! The journey of the witches on broomsticks is well enough known that journey is taken on St. John39。s eve, to the Brocken。 but we have a wild journey, also which is national and modern, and that is the journey to Amack on the night of the New Year. All indifferent poets and poetesses, musicians, newspaper writers, and artistic notabilities, I mean those who are no good, ride in the New Year39。s night through the air to Amack. They sit backwards on their painting b all lapse of time, and had bee a cipher and a nothing. Then three alone, or moveth upon greater means, if they have never so little hand in it, they think it is they that carry it They that are glorious, must needs be factious。 for all bravery stands upon parisons. They must needs be violent, to make good their own vaunts. Neithe r can they be secret, and therefore not effectual。 but according to die French proverb。 beaucoup de bruit, peu de fruit: much bruit, little fruit Yet certainly there is use of this quality, in civil affairs. Where there is an opinion, and fame to be created, either of virtue, or greatness, these men are good trumpeters. Again, as Titus Livius noteth, in the case of Antiochus, and the Aetolians。 there are sometimes great effects of cross lies。 as if a man that negotiates between two princes, to draw them to join in a war against the third, doth extol the forces of either of them above measure, the one to the other: and sometimes, he that deals between man and man, raiseth his own credit with both by pretending greater interest than he hath in either. And in these, and the like kinds, it often falls out that somewhat is produced of nothing: for lies are sufficient to breed opinion, and opinion brings on substance. In military manders and soldiers, vainglory is an essential point。 for as iron sharpens iron, so by glory one courage sharpeh another. In cases of great enterprise, upon charge and adventure, a position of glorious natures doth put life into business。 and those mat are of solid and sobe r natures have more of the ballast, than of the sail. In fame of learning, the flight w ill be slow, without some feathers of ostentation. Q ui de contenmenda gloria libros scribunt, nomen suum inscribunt. Socrates, Aristotle, Galen, were men firil of ostentation. Certainly vainglory helpeth to perpetuate a man\39。s memory。 and virtue was never so beholding to human nature, as it received his due at the second hand. Neither had the fame of Cicero, Seneca, Plinius Secundus, borne her age so well, if it had not been joined with some vanity in themselves: like unto varnish, that makes sealings not only shine, but last But all this while, when I speak of vainglory, I mean not of that property, that Tacitus doth attribute to Mucianus。 omnium, quae cHxerat jeceratque, arte quadam ostentator: for that proceeds not of vanity, but of natural magnanimity, and discretion: and in some persons is not only ely, but gracious. For excusations, cessions, modesty itself well governed, are but arts of ostentation. And amongst those arts there is none be tter, than that which Plinius Secundus speaketh of。 which is to be liberal of praise and mendation to others, in that wherein a man\39。s self hath any perfection. For saith Pliny very wittily。 In mending another, you do your self right。 for he that you mend, is either superior to you, in that you mend, or inferior. If he be inferior, if he be to be mended, you much more。 if he be superior, if he be not to be mended, you much less. Glorious men are the scorn of wise men。 the admiration of fools。 the idols of parasites。 and the slaves of their own vaunts. LastIndexNext And now ha