Category Archives: NAT
NAT
NAT atau Network Address Translation merupakan salah satu fungsi yang bertujuan untuk menghubungkan dua jaringan yang berbeda, dimana NAT ini bisa digunakan sebagai penghubung dari IP private ke IP public.
Berikut beberapa lab yang sy praktekkan di gns :
- Dynamic NAT Overload
Konfigurasi R1
Ip nat pool TES 12.12.12.12 12.12.12.2 prefix-length 24
Ip nat inside source list 1 pool TES overload
Konfigurasi R1
Int lo0
Ip add 10.10.10.2 255.255.255.0 secondary
Ip add 10.10.10.3 255.255.255.0 secondary
Ip add 10.10.10.4 255.255.255.0 secondary
Ip add 10.10.10.5 255.255.255.0 secondary
Ip add 10.10.10.1 255.255.255.0
Ip nat inside
!
Int f0/0
Ip add 12.12.12.1 255.255.255.0
Ip nat outside
!
Ip route 0.0.0.0 0.0.0.0 12.12.12.2
!
Ip nat inside source list 1 interface s1/0 overload
!
Access-list 1 permit 10.10.10.2
Access-list 1 permit 10.10.10.3
Access-list 1 permit 10.10.10.1
Access-list 1 permit 10.10.10.4
Access-list 1 permit 10.10.10.5
- Dynamic Nat (LOAD BALANCING)
Konfigurasi R1
Ip nat pool TES 10.10.10.1 10.10.10.5 prefix-length 24 type rotary
Ip nat inside destination list 1 pool TES
!
Access-list 1 permit 20.20.20.1
- Dynamic NAT (Match Host)
Alokasi bagian host ip local akan sama dengan bagian host ip publik nya
10.10.10.1 – 20.20.20.20.1
10.10.10.2 – 20.20.20.20.2
10.10.10.3 – 20.20.20.20.3
10.10.10.4 – 20.20.20.20.4
10.10.10.5 – 20.20.20.20.5
Konfigurasi di R1
Conf t
Clear ip nat translation *
Ip nat pool TES 20.20.20.1 20.20.20.5 prefix-length 24 type match-host
- Dynamic NAT (Sequence)
Konfigurasi R1
Int lo0
Ip add 10.10.10.2 255.255.255.0 secondary
Ip add 10.10.10.3 255.255.255.0 secondary
Ip add 10.10.10.4 255.255.255.0 secondary
Ip add 10.10.10.5 255.255.255.0 secondary
Ip add 10.10.10.1 255.255.255.0
Ip nat inside
!
Int f0/0
Ip add 12.12.12.1 255.255.255.0
Ip nat outside
!
Ip route 0.0.0.0 0.0.0.0 12.12.12.2
!
Ip nat pool TES 20.20.20.1 20.20.20.5 prefix-length 24
Ip nat inside source list 1 pool TES
!
Access-list 1 permit 10.10.10.2
Access-list 1 permit 10.10.10.3
Access-list 1 permit 10.10.10.1
Access-list 1 permit 10.10.10.4
Access-list 1 permit 10.10.10.5
- NATÂ STATIC (Extendable)
Konfigurasi R1
Int lo0
Ip add 10.10.10.1 255.255.255.0
Ip nat inside
!
Int f0/0
Ip add 12.12.12.1 255.255.255.0
Ip nat outside
Int f0/1
Ip add 13.13.13.1 255.255.255.0
Ip nat outside
!
Ip nat inside source static 10.10.10.1 20.20.20.1 extendable
Ip nat inside source static 10.10.10.1 30.30.30.1 extendable
Konfigurasi R2
Int f0/0
Ip add 12.12.12.2 255.255.255.0
!
Ip route 20.20.20.0 255.255.255.0 12.12.12.1
Int f0/0
Ip add 13.13.13.3 255.255.255.0
Ip route 30.30.30.0 255.255.255.0 13.13.13.1
- NAT Static (Network to Network)
Hapus dulu konfigurasikan NAT Static sebelumnya
conf t
no ip nat inside source static 10.10.10.1 12.12.12.3
Konfigurasi R1
conf t
Ip nat inside source static network 10.10.10.0 20.20.20.20.0
Konfigurasi R2
di R2 dikonfigurasikan route ke network 20.20.20.0/24 agar bisa mengembalikan paket ping nya
Conf t
Ip route 20.20.20.20.0 255.255.255.0 12.12.12.1