: ) NETWORK ADDRESS TRANSLATION (NAT PACKET TRACERNAT ()

. : NAT switch IP : 5 IP 2 4 IP 6 IP

Router1

ISP

Switch

Internet

1PC1 IP

2PC2 IP

3PC3 IP

ISP . Packet 2 2 5. P 1 PC ISP 1 PC 1 IP 6 IP 5 IP 6 IP 1 IP 5 IP ISP 6 IP 5 IP 1 IP 6 IP .

.

: Implementation Requirements 1. 1 . Private Range :0.0.0.01 to 552.552.552.01

: : :

0.0.61.271

to

552.552.13.271

0.0.861.291

to

552.552.861.291

2. NAT :Inside NAT ------

( 1 ) ( 2)

Outside NAT ------

Range

3. ( ) .

ISP ( IP : DSL IP ( ) ( : IP IP

4.

) Port Address IP . 5. NAT Overload NAT Overload IP ( : PAT )Port Address Translation monitor Console ( RS )( . ) Consol :

Desktop Terminal Host .

NAT : Packet Tracer : 56.23.81.891 92/ 07.23.81.891 6 22

23 22 3 : 842.552.552.552 62client 621.6.861.291

56.6.861.291

Private IP : Net Mask62 :

291.552.552.552 .

:1. .( 26 ! 3 )

Terminal 1PC consol.

2. : .Copper Straight-Through : 321.6.861.291 : PC-PT A 421.6.861.291 : PC-PT B 521.6.861.291 : ( PC-PT C (255.255.255.192 :subNet mask Consol: 1PC 1PC:

ISP Serial DCE Serial DTE : switch:PT-SWITCH-NM-ICFE :621.6.861.291 : 0/0 --- FastEhernet 311.2.0.291 : 0/2 ISP --- Serial : ISP 411.2.0.291 : 0/2 Serial

PC1-DesktopTerminal

3. 1 PC :

:

: Router>enable Router#configure terminal . 1- :NAT pool IP6 56.23.81.89107.23.81.891255.255.255.248:Mask : Router(config)#ip nat pool mypool 198.18.32.65 198.18.32.70 netmask 842.552.552.552

NATmypool 2- : (001 : 36.0.0.0 46.6.861.291 Router(config)#access-list 1 permit Permit. (access-list1) : 36.0.0.0 46IP621.6.861.291 (46.6.861.291)6.861.291 36 : 56.6.861.291 66.6.861.291 : 521.6.861.291 192.168.6.126 --- 3- : NAT Overload(IP.)IP NAT Pool NAT IP : Router(config)# ip nat inside source list 1 pool mypool overload overloadNAT 1 access-list ()1 56.6.861.291521.6.861.291mypool 56.23.81.89107.23.81.891 overloadIP: Many-to-One IP. 4- : NAT 0/2S0/0fa : 0/0Router(config)#interface fa

Router(config-if)#ip nat inside . exit#) Router(config#)Router(config-if : Router(config-if)#exit 0/2Router(config)#interface serial Router(config-if)#ip nat outside NAT 5- : . : Router(config-if)#end end#)Router(config.Router(config-if)#end (): Router#copy running-config startup-config . 6- : NAT PingISP411.2.0.291 PINGG . Ping.ISP 7- : NAT Terminal>:Router Router>show ip nat translation :

Inside Local

Outside Local

(ISP ) Outside Global

(ping) . . : - -