[Practice] NAT-PAT

NAT-PAT 실습

실습 코드 (Static Routing)

1. PC

PC1 : ip 192.168.20.10/24 192.168.20.254
PC2 : ip 192.168.20.20/24 192.168.20.254
PC3 : ip 192.168.34.30/24 192.168.34.3
PC4 : ip 192.168.34.40/24 192.168.34.3
PC5 : ip 192.168.40.50/24 192.168.40.254
PC6 : ip 192.168.40.60/24 192.168.40.254

2. R1

R1#conf t
R1(config)#int fa 0/0
R1(config-if)#ip addr 192.168.12.1 255.255.255.0
R1(config-if)#ip nat inside
R1(config-if)#no shutdown

R1(config-if)#int fa 0/1
R1(config-if)#ip addr 192.168.13.1 255.255.255.0
R1(config-if)#ip nat inside
R1(config-if)#no shutdown

R1(config-if)#int fa 1/0
R1(config-if)#ip addr 192.168.94.100 255.255.255.0
R1(config-if)#ip nat outside
R1(config-if)#no shutdown

R1(config-if)#ip route 192.168.20.0 255.255.255.0 192.168.12.2
R1(config)#ip route 192.168.34.0 255.255.255.0 192.168.13.3
R1(config)#ip route 192.168.40.0 255.255.255.0 192.168.13.3
R1(config)#ip route 0.0.0.0 0.0.0.0 192.168.94.94

R1(config)#access-list 1 permit 192.168.0.0 0.0.255.255
R1(config)#ip nat inside source list 1 int fa 1/0 overload

3. R2

R2#conf t
R2(config)#int fa 0/0
R2(config-if)#ip addr 192.168.12.2 255.255.255.0
R2(config-if)#no shutdown

R2(config-if)#int fa 0/1
R2(config-if)#ip addr 192.168.20.254 255.255.255.0
R2(config-if)#no shutdown

R2(config-if)#ip route 0.0.0.0 0.0.0.0 192.168.12.1

4. R3

R3#conf t
R3(config)#int fa 0/0
R3(config-if)#ip addr 192.168.13.3 255.255.255.0
R3(config-if)#no shutdown

R3(config-if)#int fa 0/1
R3(config-if)#ip addr 192.168.34.3 255.255.255.0
R3(config-if)#no shutdown

R3(config-if)#ip route 192.168.40.0 255.255.255.0 192.168.34.4
R3(config)#ip route 0.0.0.0 0.0.0.0 192.168.13.1

5. R4

R4#conf t

R4(config)#int fa 0/0
R4(config-if)#ip addr 192.168.34.4 255.255.255.0
R4(config-if)#no shutdown

R4(config-if)#int fa 0/1
R4(config-if)#ip addr 192.168.40.254 255.255.255.0
R4(config-if)#no shutdown

R4(config-if)#ip route 0.0.0.0 0.0.0.0 192.168.34.3

---

실습 코드 (OSPF)

1. PC

PC1 : ip 192.168.20.10/24 192.168.20.254
PC2 : ip 192.168.20.20/24 192.168.20.254
PC3 : ip 192.168.34.30/24 192.168.34.3
PC4 : ip 192.168.34.40/24 192.168.34.3
PC5 : ip 192.168.40.50/24 192.168.40.254
PC6 : ip 192.168.40.60/24 192.168.40.254

2. R1

R1#conf t
R1(config)#int fa 0/0
R1(config-if)#ip addr 192.168.12.1 255.255.255.0
R1(config-if)#ip nat inside
R1(config-if)#no shutdown

R1(config-if)#int fa 0/1
R1(config-if)#ip addr 192.168.13.1 255.255.255.0
R1(config-if)#ip nat inside
R1(config-if)#no shutdown

R1(config-if)#int fa 1/0
R1(config-if)#ip addr 192.168.94.100 255.255.255.0
R1(config-if)#ip nat outside
R1(config-if)#no shutdown

R1(config-if)#router ospf 1
R1(config-router)#network 192.168.12.0 0.0.0.255 area 0
R1(config-router)#network 192.168.13.0 0.0.0.255 area 0
R1(config-router)#default-information originate always

R1(config-router)#ip route 0.0.0.0 0.0.0.0 192.168.94.94

R1(config)#access-list 1 permit 192.168.0.0 0.0.255.255
R1(config)#ip nat inside source list 1 int fa 1/0 overload

3. R2

R2#conf t
R2(config)#int fa 0/0
R2(config-if)#ip addr 192.168.12.2 255.255.255.0
R2(config-if)#no shutdown

R2(config-if)#int fa 0/1
R2(config-if)#ip addr 192.168.20.254 255.255.255.0
R2(config-if)#no shutdown

R2(config-if)#router ospf 1
R2(config-router)#network 192.168.12.0 0.0.0.255 area 0
R2(config-router)#network 192.168.20.0 0.0.0.255 area 0
R2(config-router)#passive-interface fa 0/1

4. R3

R3#conf t
R3(config)#int fa 0/0
R3(config-if)#ip addr 192.168.13.3 255.255.255.0
R3(config-if)#no shutdown

R3(config-if)#int fa 0/1
R3(config-if)#ip addr 192.168.34.3 255.255.255.0
R3(config-if)#no shutdown

R3(config-if)#router ospf 1
R3(config-router)#network 192.168.13.0 0.0.0.255 area 0
R3(config-router)#network 192.168.34.0 0.0.0.255 area 0

5. R4

R4#conf t
R4(config)#int fa 0/0
R4(config-if)#ip addr 192.168.34.4 255.255.255.0
R4(config-if)#no shutdown

R4(config-if)#int fa 0/1
R4(config-if)#ip addr 192.168.40.254 255.255.255.0
R4(config-if)#no shutdown

R4(config-if)#router ospf 1
R4(config-router)#network 192.168.34.0 0.0.0.255 area 0
R4(config-router)#network 192.168.40.0 0.0.0.255 area 0
R4(config-router)#passive-interface fa 0/1