NAT (Network Address translation) adalah sebagai penerjemah antara satu IP pada IP yang lain. biasanya NAT ditemukan pada konfigurasi antara IP public dan IP private.
Konfigurasi di Router Client
- Router>enable
- Router#configure terminal
- Router(config)#int fa 0/0
- Router(config-if)#ip address 192.168.1.1 255.255.255.0
- Router(config-if)#no shutdown
- Router(config-if) #exit
- Router(config)#int fa 0/1
- Router(config-if)#ip address 10.10.10.1 255.255.255.252
- Router(config-if)#no shutdown
- Router(config-if) #exit
- Router(config)#access-list 1 permit any
- Router(config)#ip nat inside source list 1 interface fastEthernet 0/1 overload
- Router(config)#interface fastEthernet 0/0
- Router(config-if)#ip nat inside
- Router(config)#interface fastEthernet 0/1
- Router(config-if)#ip nat outside
Konfigurasi di Router ISP
- Router>enable
- Router#configure terminal
- Router(config)#int fa 0/0
- Router(config-if)#ip address 10.10.10.2 255.255.255.252
- Router(config-if)#no shutdown
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