Cisco Configuration Trainer
22:10:02

Network Address Translation

Implementasi NAT untuk koneksi internet

Network Address Translation

Pelajari cara mengkonfigurasi NAT untuk koneksi internet.

Konsep NAT

NAT (Network Address Translation) digunakan untuk:

  • Menghemat alamat IP publik
  • Menyembunyikan jaringan internal
  • Mengizinkan koneksi internet dari jaringan private

Static NAT

Router(config)# ip nat inside source static 192.168.1.10 203.0.113.5
Router(config)# interface gigabitethernet 0/0
Router(config-if)# ip nat outside
Router(config-if)# exit
Router(config)# interface gigabitethernet 0/1
Router(config-if)# ip nat inside

Dynamic NAT (PAT)

Router(config)# access-list 1 permit 192.168.1.0 0.0.0.255
Router(config)# ip nat inside source list 1 interface gigabitethernet 0/0 overload
Router(config)# interface gigabitethernet 0/0
Router(config-if)# ip nat outside
Router(config-if)# exit
Router(config)# interface gigabitethernet 0/1
Router(config-if)# ip nat inside

Port Forwarding

Router(config)# ip nat inside source static tcp 192.168.1.100 80 203.0.113.10 80

Verifikasi NAT

Router# show ip nat translations
Router# show ip nat statistics
Router# debug ip nat

Latihan Praktikum

  1. Konfigurasi PAT untuk jaringan 192.168.1.0/24 menggunakan interface WAN
  2. Buat port forwarding untuk server web internal di 192.168.1.100
  3. Verifikasi translasi NAT yang aktif
  4. Monitor statistik NAT

Cisco CLI Simulator

Cisco IOS Simulator v15.2
> Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M1
> Technical Support: http://www.cisco.com/techsupport
> Copyright (c) 1986-2012 by Cisco Systems, Inc.
> Compiled Thu 26-Jul-12 11:46 by prod_rel_team
>
> Router> Type 'help' for available commands
Router>

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