Tìm hiểu mạng máy tính và bảo mật mạng bằng firewall luận văn tốt nghiệp đại học

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TỔNG QUAN VỀ MẠNG MÁY TÍNH 8nU.O)0LT2x:.<TBXYP>0V:P<.2f b0K0cfI>.K.:?TBXYP2k.;:?TBXYP2k.XI.x =.Q(8d2=XYXI.ibP2?ZnX2(d2=XY0aHK:P<. 2f>0eTBXY:y8P<.2f&[=.z.biC .:?TBXYP2k.(C"=.I>:HKZTBXY0[fI .K.<P2?Z(P>0V:eHSR"P2Ia\r0[R" P2Pr.K0P2?Z:@2B8P<.2f\: C2XI/{HKa\V[P2?Z^>^>:W>P<.2f B(_HKR"P2\WV\=U0V"=rHK0.0[ X2n<.:W Hình 1.1. Mạng xử lý với bộ tiền xử lý  8012nU.$)(:.:?@0LfC2Pe"0[<> I.K.<.:?@A."k:=iCfIU0KR?  75P>nU.$)(Hy012T2x\:..<P2?Z Ws7> 2C>Gh>P\tP>0V:I"1@iCVXIj .<0cQXIHK2?[.<shtr0[W $   0@  iC  V  7:  j  .<  0c  f    C2  HA  0  P2?Z sPC^.^^>Gt_:.:?TBXYWiC^B2s>^t >|:P<.2fsGP.CXt0cfPe"I>:j.<0[\1 6PC>0lWd2C.<9=k:j.<5XI.:? @V[0a0V=CP_.:?iC^Bb 1.1. Khái niệm cơ bản về mạng máy tính ;<.:?@XIR"c":.:?@0c\efC2H/: 0P2?ZRX@G>.K\ePjI>0V '\ef:.:?@A..b2C^}I2?28 nSP@\:C2\efV[Wd2Ck?(CXC^GP(^V 08C?~W 7:.:?@\efI.<A.0<.b2^C2 +kC>:PSiCI2?.<eHS.<IEP6o b(nX2(:eHS><l0•C>I(.:?(.>2^G(.>G.'6 R?Hxo.:?@I>5V[r2V +U2^2xXI.iC:.:?P>.< +U0KR?iCf6.{.:?@0EX}P.<e2|" ^f0Z2V[C?e  +<>PC.WPP2?ZW.<nCZ2^BbP "<.PK.b2I?I?IP/d2CPQxXI\.< .:?@0L":P[P>I12I?C?2R"(X2PnW PPKloIP[\C:0Z:X.K:~II2R Xc +e\.0c"@>I2?0cr2(fR? E"@IH=>€iC.<.:?@x"E^>.:?@ PX} +9=>I2?P6nX2 ` 62x=:.C.:?@0Z2Vr2.K^fI"1( oUI0|@x0S&VXI  ;:?isGPGPtXII"1.:?@2x"I2?r 2P.< ;:?P<.s7XGtXIn.:?@P2?R":2?r2 0cx"H/^GPGP EP2?Zs;GCt:o.:?@0cfC2      nX2r2sCPGCCt:R">.:?i2x" Cd2C.< ;:?IneHS><r2\::I2?.I .:?i2x" I2?sPG^C2PGtR"(.:?(>|nI"1\:.I r.<^Bb 1.2. Phân loại mạng máy tính 7VZ2:0["kX><.<\:C22•2KI>:?e2f @0cQ0[XI.‚2"kX><(ƒ<0VXI„„\>=:0SC XY……(„„6o2?[.<……(„„\ePj.<……C?„„I2?P .<……  Phân loại mạng máy tính theo khoảng cách địa lí e2Xx?†\>=:0SCX@‡XI.?e2f0["kX><6V.<bHK( .<PK(.<>I12 • ;<bHKst<.>C0KiC.<E0fˆ s@b>II(PQ\>=:XknC:j .<‚P>_Ib\XW.‰P/X< • ;<0WSs;tXI.<0cI0|P>"<..K0WS >|.KP2k.\euTLKVH:\@\>=-))\.P/X< • ;<PKsFt"<.><0K.<V[cd2C Hd2fCIR.@=Xb0SC N • ;<>I12st"<.><0KiC.<P=PK\y" :Xb0SCiCP:0x  Phân loại mạng máy tính theo kỹ thuật chuyển mạch Mạng chuyển mạch kênh: Hình 1.2. Chuyển mạch kênh P>Pc"I?(\V[1PC>0lWC26 nCj^Š0c.K\P2?Zf0SI0c2?P6> 0e\-P>,HyXX<7:nX2‚0cP2?ZG>0f 0S0V E":"I?VCc0[.@oxXI"=2f C0[eXR"0P2?Zf0SnC,[CoCXI2 ^2x^Bb0P2?Z\WC>6^ŠVXj\HSHˆ\W>=C HeW1P2?ZP>\:[\:\W0c^Bb \P2?ZI? Mạng chuyển mạch thông báo:WH:>XI.K0ESWiC ^BbV\2W<0c^BbP;{WH:>0Z2VoCr W0Z2\[P>0V‚P‹0@iCWH:>7UoI>W I?.I.{jP2CV[P2?ZWH:>j\ee"G>0 0@iCVR?(.{j1"=X2Pn<.0[†0Q‡ W0Z2\[PWH:>0[Pa^C20V2?[e"WH:>0 -)