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Authentication RedistributionSaturday, November 10, 201210:20
AM
1. Gii thiu thc t i lm2. Gii thiu v xc thc
3. Gii thiu v Redistribute:Ni dung chi tit:Xc thc ch trong giao
thc nh tuyn, t RIPv2, EIGRP, OSPF, IS-IS tr i lh tr. Khi cu hnh xc
thc s trnh b Hack, nu h thng kt ni t H ni voHCM.1. Trn thc t i lm:+
Am hiu t thu knh (thu ng thu bao no)+ Kt ni u vo: by gi ch yu kt ni
thng vo RJ45 qua converter
+ S dng Fiwall t sau Router.+Am hiu v cc dng thit b ca Cisco,
Juniper. Ti sao thit b Cisco li chia rathnh nhiu loi: v chia nhiu
loi s c nhiu gi thnh khc nhau, ph hp vitng h thng. Spening tree ca
cisco l ngon nht, khi b Loop mng (1 dy cm 2u vo cng switch s b
Loop) vy thit b ca cisco s t shutdown c ccng . V ngi dng u cui l
phc tp nht v gi thnh r nn s chn thit
b Cisco l ph hp. Khi chia thnh nhiu dng s ph hp vi tng h
thngmng, Mng LAN, mng WAN, Mng Internet. Thit b Cisco s chng cnhiu
trng hp tn cng. Nhng thit b Cisco t tin s lc c ni dung ln=> i vi
doanh nghip khong 200 nhn vin: nu khng chy dch v th mua
loi 2 ti 3 nghn l c, cn nu c chy dch v th phi dng thit b c
dng3700 tr ln v c gi l khong 150 triu ti 200 triu.=> i vi doanh
nghip c nhiu ng mng th s dng n Server sau cmcc ng mng vo v nh
tuyn.=> Nu s dng ng Quang th ngi ta s cho dy nhy ra u RJ45 v
cmvo mt Swtich sau Ko mi dy vo Server v trn Server cu hnh
PPPoE.=> Router nh tuyn trong LAN khc, Router nh tuyn ngoi
Internet khc=> Trong LAN tc cao, th dng Server v Server mi chiu
nhit c doRAM cao. Ra ngoi internet th dng ti Router chuyn dng nhng
tc i trn
internet rt b.=> ng quang thng l ng FTTH2. Trong xc thc
Authentication:+ Bn tin Authentiacation s ng gi trong mt phn ca nh
tuyn ng.+ Authentication chia thnh 2 kiu: thng tin truyn i th theo
dng Clear text, vmt dng l MD5
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3. Redistribution: Khi chy RIPv2, OSPF1, EIGRP,a. Redistribute
vo EIGRP:
- RIP => EIGRP:+ Router(config)#router eigrp as-number+
Router(config-router)#redistribute rip metric bandwidth delay
reliablityload mtu
- EIGRP => EIGRP:+ Router(config-router)#redistribute eigrp
as-number [metric bandwidthdelay reliablity load mtu]
- OSPF => EIGRP:+ Router(config-router)#redistribute ospf
process-id metric bandwidthdelay reliablity load mtu
- C Static Route v Default Route => EIGRP:
+ Router(config-router)#redistribute static [metric bandwidth
delayreliablity load mtu]
- Connected Route => EIGRP:+
Router(config-router)#redistribute connected [metric bandwidth
delayreliablity load mtu](ch qung b thng tin vo nh tuyn nhng khng
trao i thng tin
vi cc mng kt ni)Trong :1. Du ngoc vung [ ] l ty chn, c th c hoc
khng.
2. Bandwidth: tnh theo n v kbps (v d ng 10Mbps s l 10000).3.
Delay: tnh theo n v 10 ms (v d 1s l 100)4. reliablity: 1=>255.5.
Load: 1=>255.6. MTU l n v truyn d liu ti a.Cc thng s trn trong
cc bi lab cc bn c th chn ty , sau i lm s cnhng yu cu c th i vi tng
thng s ny.b. Redistribute vo OSPF
- RIP => OSPF:
+ Router(config)#router ospf process-id+
Router(config-router)#redistribute rip [metric cost] subnet.
- EIGRP-OSPF:+ Router(config-router)#redistribute eigrp
as-number [metric cost]subnet.
- Static route & Default route => OSPF:+
Router(config-router)#redistribute static [metric cost] subnet.
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- Connected route => EIGRP:+
Router(config-router)#redistribute connected [metric cost]
subnet.
- Default route => OSPF:+
Router(config-router)#default-information originate.
Nu chng ta khng a vo tham s metric th mc nh metric s ct cho tuyn
c redistribute vo l 20.
c. Redistribute vo RIP
- EIGRP-RIP:+ Router(config)#router
ripRouter(config-router)#redistribute eigrp as-number metirc 1. (v
maxmetric ca RIP = 15, nn ta t metric cho tuyn c redistribute
vo
bng 1 n c th c truyn i xa nht c th trong RIP).- OSPF-RIP:
+ Router(config-router)#redistribute ospf process-id metirc 1.-
Static route & Default route => RIP:
+ Router(config-router)#redistribute static metirc 1.- Connected
route => RIP:
+ Router(config-router)#redistribute connected metirc 1.-
Default route => RIP:
+Router(config-router)#default-information originate.
