国贸经济管理类毕业论文-计算机网络安全

PA7 N A1j55C J A1j1*663+O =63+O 637,8=A&L$ 20 8PA1?L-pA1j55_,55,WMWj=|=F65.dp55,WMWLN_A55!hF|,L)-A1j55X,LF|6AJ)A1jL,Lb931+ABSTRACTWith the development of computer network technology, network security andreliability have become different levels of user issues of common concern.People hope that network system can be more reliable operation, from foreigninvaders and destructive interference. Therefore, to solve the networksecurity and reliability issues, to ensure the normal operation of the networkis the premise and guarantee. In this paper, the present computer networksecurity risks were analyzed, and discussed the security risks for computerpreventive strategy.PA2-0E0 1A1j55,F 19A1j55,)( 23.1A1j55,)( 23.2A1j55,G?W 23.3A1j55,3P 3A1j55Md,16 34.1A1j,y 34.2A1j55Md,16 44.2.18f& 44.2.2U,16k+ 44.2.3A1j+ 44.2.4nF&L$B=E& 54.2.5H,UG16 54.2.6A1j(5 5A1j55Lb931+ 65.1Lb&_ 65.2+XgsALf_ 75.3#_ 75.4Lb+_ 85.51*6LO=,*A 85A 98$BR 1063) 10PA1A1j550E0L-pA1j55_,OFOT_65,+XCC#XVpZ9,#G,.dF(,7-W-F+|,4#/nJF4ZMG-CCCA1j552/nJ)A1j,C0;E0,A+aA1j55,76aWF/Q,CW_-,4#-Lbq676a0A1j55k+6/nJ,4ZNpG?)55=MxF,_6|NL6ApM0?,=/2F9-(,jffLxF,_,3+5A1j55,F 55,yJL-p,F6|1*665B$|E%LbeFj?MbF)/nJ+O)-FPWa/nJ6?A1A55:=,J)/nJ,0c2,FPLk.N)F|fCX:A55a_55:,_7553+5,.&E&3+5,=f,F65?,6|55=yB$_#55:,PA2WW+XW-OWW,-(_*6AG-_55p?.D0,N55#,9_M,LN91*6M,LNTM-(u5j0=_Mk?GLb93FGM#+Xg,k+1*6MIGGj3P,1*6$9xG?,QA1j553+5,W4jp9A1j55+XN630.d5-6FB3pA1j(54COCS9,(D0 5A2F9 10= “U4?4 90YA65-C;0A1jC=hPB$5A0FJA1j0+eB40ZB3fB3aZj,55F|ah20F4 80(_F 90A-A1j55+XOFO55)(,HCW,$!/nJ4M-A4#o0.D6J-Lb1y4|4J 1997 8#A-,oGLAh(K&|1yj,A1j55-(5FJ!Qk+j*64255F#(5x&FT+eF&(#K:XP&1yjPFD,$8+8%D8&+aA-WG,55*.pA55+XCF-,_X+eo+ev4|J,A1j55+XJ4Lf!:FN,WA1j550;G-+a-0EW,3+5LvCOCS9Lv5jCOCJ,_G0ZkjL$,l?PF1?vBA,#qG+XPEBA IP pj558&,_07A=7-)8&:,+XgF|9x,D-PA1y(&FPBAY+XF|55k+555VL(2)Internet :jP,C+XUJ55+XgEC9k+55,#!(3)FO,E&w4OJFPLNE&,*)4hJ*)3+5+X0;X,k+%?#N(4)|#?o11*6MX=C-A-J)A1j55,!n=48$5:,#?fW=j|=|9x,+J8#90551*6Y+X6|5:F#|jA1j55Md,164.1A1j,y_0ZMhK6k+,-7FY+Xjk+,FD5576aWE/nJ76aWLN8fFj.d,16U,_UG,XA1j55q6,E-U4=XD4(:UFY+X(5P4PfX5:CL+XM#A1j3+5,E&!F5-0C65F|)-FJE(5F+XU!EH-,AX)A1jC0;Q,E-FJE.d|)-,A1j3+5EH-,4=_YLB4.2.3A1j+90 *).ECF+|W|,A1j+;C&93$KFOaLAF|&F3+5F| Internet,#FO+,PFOFW,+L-p-jL$,N4q#q6:wj*3+FJE Internet P,?9T/0/_8EF#?F65_FJE ftp;E,&7-X+0/_8F&+O,F&7-FJE5F&=F1J55A1jO:+EI3+5PA5:x);LGIFP3+5!jF!G6&FGRa+J8#FPA1j.&,4.2.4nF&L$B=E&0Y+X+eF&p,0W3+5,WF|vJo1y#k8!,+eF&j|,+eF1jFnF&A1j+=F,?F|M#LDZZ9,0j51;65,E&L$B=E&,7-4qJ-?+Xg|jF_3zi3+5A516+XgL/A1j7-=|H|,3+576|H,#k+,O?-7k?_F-o4#Z/nJ,A1j553+5!4j5!+O(!F!,12H+!B$Z-L$,)Ox6_,EG55Bj-,4.2.6A1j(5A1j(5FJh_Y+X01y!M#A1j3+5P9?.dA1j3+5CZ-0APH=(51y#kX0Z0n,55)WGX5:#qFj=#6k+-7Y+X=|0?02i=&L$&Lf,55APQf,X00;:j%(5,KJ)A1j3+5,(5#k,JPA6A1j55Lb931+A1j55_:B$k?+aLb+Lb
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