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BO COKHA LUN TT NGHIP
GVHD: Th.S Trng Tin VSVTH : inh Ngc Thin DuyLP : 25KTM
CHUYN NGNH: K THUT MNG
TI: TI:
GII PHP IP MULTICAST NG DNG VOGII PHP IP MULTICAST NG DNG VOMNG RING O VPNMNG RING O VPN
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GII THIU
VPN l mt mng ring ca ngi dng da trn c s h tngmng cng cng. Chng c th c to ra bng cch s dngphn mm, phn cng hay kt hp c hai phn to ra mtkt ni bo mt gia hai mng ring i qua mng cng cng.
IP multicast l mt trong nhng cng ngh v tiu chun tiubiu cho php truyn dn a im - a im nh hi ngh truynhnh, hoc qung b m thanh, hnh nh trn Internet.
Qua thi gian nghin cu v tm hiu v IP Multicast, ti thyc nhng li ch m n em li trong lnh vc truyn thng.V y cng l l do m ti chn ti Gii php IPMulticast ng dng vo mng ring o VPN
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TNG QUAN V VPN
C BN V IP MULTICAST
NH TUYN IP MULTICAST TRN GNS3
KT LUN4
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NIDUNG
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Khi nim:
Mng ring o (VPN) l mt kt ni mng trin khai trn c sh tng mng cng cng vi chnh sch qun l v bo mtging nh mng cc b.
Chc nng: Tnh chnh xc - Tnh ton vn - Tnh bo mt
u im: V mt kinh t - Tnh linh hot - M rng v pht trin Nhc im:
S tin cy v thc thi
M ha v thut ton phc tptc x l my ch chm,
tt nghn mng, mt thng tin. S ri ro v an ninh
D dng b tn cng do dng chung ng truyn internet.
TNG QUAN V VPN
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PHN LOI MNG VPN
VPN truy nhp t xa
H thng bao gm mtmy ch c nhim v iuhnh h thng nhn v githng tin
Ngi dng truy nhp nmy ch thng quaInternet hoc sng vtuyn
Thc hin cng vic cuhnh v bo mt trong qutrnh trao i d liu l rtquan trng.
Trung tmd liu
Bc tngla
ServerVPN
Server
Server
Vn p
hngt xa
ng hm S dng ding
Ngi dngt xa
Internet
nghm
ng
hm
POPInternet
Di ng
Ngi dng , Doanhnghip
Extranet
POP
DSL
Cable
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PHN LOI MNG VPN
VPN cc b L mt trong nhng dng cu hnh VPN im ti im kt ni bo
mt gia cc im khc nhau ca mt cng ty
Tt c cc im trong VPN c th truy cp an ton ngun d liu vinhau
M hnh mng VPN cc b 6
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PHN LOI MNG VPN
VPN m rng
L mt trong nhng cu hnh ca VPN im ti im Cung cp bo mt d liu gia cc ngi dng vi nhau thng qua
mng cng cng
Cc kt ni c bo mt v khng b c lp vi h thng mng bnngoi
M hnh mng VPN m rng 7
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NHN XT
u im Khng cn h tr nhn vin mng bi v qu trnh kt ni txa c cc nh cung cp dch v thc hin
Cc khon chi ph c gim ti a v s dng ng truynInternet
Cung cp dch v gi r cho ngi dng t xa, to iu kinpht trin mng
Nhc im
Khng h tr dch v bo m cht lng dch v nn vic
mt cp d liu trn ng truyn l c th xy ra Gi tin c truyn i da trn mng Internet nn c th xy
ra hin tng nghn gi tin
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M HNH MNG VPN
M hnh VPN chng ln Thit lp gia cc ngi dng khi
cn thit
Nh cung cp dch v cung cpknh o cho ngi dng
Nhim v nh cung cp dch v ltruyn d liu im ti im giacc site
M hnh VPN ngang cp Nh cung cp dch v tham
gia vo hot ng nhtuyn ca ngi dng
Cc Router bin nh cung
cp dch v trao i trctip thng tin vi ccRouter bin ngi dng
VPN A /Site 2
192 .168 .2.37
VPN B / Site 2
192 .168 .2.38
VPN A /Site 3
192 .168 .3.39
VPN B /Site 3
192 .168 .4.40
VPN A /Site 1
192 .168 .1.36
VPN B /Site 1
192.168 .1.35
VPN A / Site 1
192.168.1.9
VPN B /Site 1
192.168.1 .10
VPN A /Site 2
196.168.2.11
VPN B /Site 2
196.168.2.12
VPN B /Site 3
196.168.4.15
VPN A /Site 3
196.168.3.14
CE
PE2
PE1
PE3
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GIAO THC BO MT IPSEC
IPSec l mt phng php bo v IP Datagram.Chc nng ca IPSEC:- Tnh xc thc- Tnh ton vn
- Tnh bo mt- M ha
IPSec cng thc hin ng gi d liu v x l cc thngtin thit lp, duy tr v hy b ng hm khi khng dngn na.
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CH M HA
C: 200.176.43.11C: 200.176.43.11 D: 192.60.75.3D: 192.60.75.3tunnel across WAN
VPNVPNGatewayGatewayVPNVPNGatewayGateway
Internet
B: 10.0.1.3B: 10.0.1.3A: 10.0.1.5A: 10.0.1.5transport between hosts
VPNVPNGatewayGatewayVPNVPNGatewayGateway
Ch transportch m ha phn payload ca mi gi tin,nhng b i phn header khng s n.Ch tunnelm ha c phn header v payload cungcp s thay i bo mt nhiu hn ca gi tin.
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LIN KT AN TON
Mt SA chnh l mt s tha thun gia hai u kt nicng cp chng hn nh giao thc IPSec. Hai giao thc
AH v ESP u s dng SA, v n l chc nng chnhca giao thc trao i kha IKE.
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GIAO THC XC THC TIU AH
Authentication Header (AH) l mt giao thc kha trong kin trcIPSec. N cung cp tnh xc thc v tnh ton vn cho IPdatagram.
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GIAO THC NG GI ESP
Encapsulation Security Payload (ESP) l mt giao thc khatrong IPSec, n cung cp tnh ton vn v bo mt (m ha)cho IP datagram.
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C BN V IP MULTICAST
IP Multicast l mt chun m ca IETF(Internet EngineeringTask Force) dng truyn dn cc gi d liu IP t mtngun n nhiu ch trong mt mng LAN hay WAN.Vic
gi bn tin Unicast v Broadcast l cc trng hp c bitca phng php Multicast. Truyn Multicast ci thin ngk v hiu sut, thng s dng bng thng nh hntruyn n trn mng, v cho php xy dng cc ng dng
phn tn hp l.
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http://tudiencongnghe.com/Special:Search/LANhttp://tudiencongnghe.com/Special:Search/WANhttp://tudiencongnghe.com/Special:Search/Unicasthttp://tudiencongnghe.com/Special:Search/Broadcasthttp://tudiencongnghe.com/Special:Search/Broadcasthttp://tudiencongnghe.com/Special:Search/Unicasthttp://tudiencongnghe.com/Special:Search/WANhttp://tudiencongnghe.com/Special:Search/LAN -
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TRUYN DN UNICAST
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TRUYN DN MULTICAST
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PIM DENSE-MODE
PIM cho php router xc nh ng mt con ng cho cc gi
tin multicast v xc nh nhm multicast no cn c chuyn. 18
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PIM SPARSE-MODE
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IGMP
Giao thc IGMP cho php cc trm c th ng k tham gia hayri khi mt nhm ang hot ng.
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NG DNG TRONG IP MULTICAST
IP Multicast c ng dng trin khai internet TV, hi nghtrc tuyn, hi ngh theo yu cu, truyn m thanh, hnhnhng dng hiu qu trong lnh vc truyn thng.
Cc ng dng hin nay trn mng Internet u da vo giaothc truyn theo im, ging nh l cc ng dng trongmng LAN truyn thng.IP multicast gip cho mng tit kimc bng thng.S dng IP Multicast c th gim ti chomng.
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M hnh lab Multicast
NH TUYN IP MULTICAST TRN GNS3
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CC BC THC HiN
Bc 1: Cu hnh a ch IP trn cc router v cc interfaceloopback , cc host (interface loopback) thc hin gi cc giIGMP n cc router thng bo xin gia nhp nhm.
Bc 2: Cu hnh nh tuyn OSPF trn cc router qungb cc lp mng gia cc router vi nhau.
Bc 3: Thc hin cu hnh PIM Sparse Dense Mode
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Cng ngh mng ring o VPN by gi tr thnh mtcng ngh ph bin rng ri trn ton th gii v tr thnhmt trong nhng gii php khng th thiu i vi mt scc doanh nghip. Ty vo tng trng hp cng nh iukin thc t m chng ta c th trin khai mng VPN vinhng m hnh khc nhau.
Truyn thng Multicast ra i ci thin ng k cc yuim ca hai m hnh truyn thng c bn l Unicast vBroadcast. Cng ngh ny nhanh chng c chpnhn v ng dng trn nhiu lnh vc truyn thng.
KT LUN
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Thank You Listen For Me !!!Thank You Listen For Me !!!
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