Lab 4: NATing

Task

Topology

1. Configure IP Address as per given topology.
2. Enable EIGRP and advertise all the networks on all Routers.
3. PC3 IP will be Natted with 10.0.13.254.
4. PC1 and PC2 will be Natted dynamically in Range between 10.0.13.4 - 10.0.13.10.
5. PC4 and PC5 will be Natted statically in 10.0.46.100 and 10.0.46.101 respectively.
6. PC6, PC7 and PC8 will be Natted with overload PAT with interface serial0/0.
7. PC9, PC10 and PC11 will be Natted dynamically in Range between 10.0.25.4 -10.0.25.10.

Verify NAT after implement all the Possible NAT Statement to accomplish above Tasks.

Solution

Task 1: Configure IP Address as per given topology.

On R1
=====


interface Serial0/0
 ip address 10.0.13.1 255.255.255.0
 no shut
 exit

interface Serial0/1
 ip address 10.0.12.1 255.255.255.0
 no shut
 exit


On R2
=====

interface Serial0/0
 ip address 10.0.25.2 255.255.255.0
 no shut
 exit

interface Serial0/1
 ip address 10.0.12.2 255.255.255.0
 no shut
 exit

On R3
=====

interface FastEthernet0/0
 ip address 192.168.1.254 255.255.255.0
 no shut
 exit

interface Serial0/0
 ip address 10.0.13.3 255.255.255.0
 no shut
 exit

interface Serial0/1
 ip address 10.0.34.3 255.255.255.0
 no shut
 exit

On R4
=====

interface FastEthernet0/0
 ip address 192.168.2.254 255.255.255.0
 no shut
 exit

interface Serial0/0
 ip address 10.0.34.4 255.255.255.0
 no shut
 exit

interface Serial0/1
 ip address 10.0.46.4 255.255.255.0
 no shut
 exit

On R5
=====

interface FastEthernet0/0
 ip address 192.168.4.254 255.255.255.0
 no shut
 exit
 
interface Serial0/0
 ip address 10.0.56.5 255.255.255.0
 no shut
 exit
 
interface Serial0/1
 ip address 10.0.25.5 255.255.255.0
 no shut
 exit

On R6
=====

interface FastEthernet0/0
 ip address 192.168.3.254 255.255.255.0
 no shut
 exit

interface Serial0/0
 ip address 10.0.46.6 255.255.255.0
 no shut
 exit

interface Serial0/1
 ip address 10.0.56.6 255.255.255.0
 no shut
 exit


Task 2: Enable Eigrp and advertise all the networks on all Routers.

On R1
=====

router eigrp 100
 network 10.0.12.0 0.0.0.255
 network 10.0.13.0 0.0.0.255
 no auto-summary

On R2
=====

router eigrp 100
 network 10.0.12.0 0.0.0.255
 network 10.0.25.0 0.0.0.255
 no auto-summary

On R3
=====

router eigrp 100
 network 10.0.13.0 0.0.0.255
 network 10.0.34.0 0.0.0.255
 network 10.0.0.0
 network 192.168.1.0
 no auto-summary

On R4
=====

router eigrp 100
 network 10.0.34.0 0.0.0.255
 network 10.0.46.0 0.0.0.255
 network 192.168.2.0
 no auto-summary

On R5
=====

router eigrp 100
 network 10.0.25.0 0.0.0.255
 network 10.0.56.0 0.0.0.255
 network 192.168.4.0
 no auto-summary

On R6
=====

router eigrp 100
 network 10.0.46.0 0.0.0.255
 network 10.0.56.0 0.0.0.255
 network 192.168.3.0
 no auto-summary

 
Task 3: PC3 IP will be natted with 10.0.13.254.

On R3
=====


interface FastEthernet0/0
 ip nat inside
 exit

interface Serial0/0
 ip nat outside
 exit

interface Serial0/1
 ip nat outside
 exit

ip nat source static 192.168.1.3 10.0.13.254


Task 4: PC1 and PC2 will be natted dynamically in Range between 10.0.13.4 - 10.0.13.10.

On R3
=====

interface FastEthernet0/0
 ip nat inside
 exit

interface Serial0/0
 ip nat outside
 exit

interface Serial0/1
 ip nat outside
 exit

ip access-list extended NAT
 permit ip host 192.168.1.1 any
 permit ip host 192.168.1.2 any
 exit

ip nat pool R3 10.0.13.4 10.0.13.10 netmask 255.255.255.0
ip nat inside source list NAT pool R3


Task 5: PC4 and PC5 will be natted statically in 10.0.46.100 and 10.0.46.101 respectively.


On R4
=====

interface FastEthernet0/0
 ip nat inside
 exit

interface Serial0/0
 ip nat outside
 exit

interface Serial0/1
 ip nat outside
 exit

ip nat inside source static 192.168.2.1 10.0.46.100
ip nat inside source static 192.168.2.2 10.0.46.101


Task 6: PC6, PC7 and PC8 will be natted with overload PAT with interface serial0/0.

On R6
=====

interface FastEthernet0/0
 ip nat inside
 exit

interface Serial0/0
 ip nat outside
 exit

interface Serial0/1
 ip nat outside
 exit

ip access-list extended NAT
 permit ip 192.168.3.0 0.0.0.255 any
 exit

ip nat pool R6 10.0.46.6 10.0.46.6 netmask 255.255.255.0
ip nat inside source list NAT pool R6 overload


Task 7: PC9, PC10 and PC11 will be natted dynamically in Range between 10.0.25.4-10.0.25.10.

On R5
=====

interface FastEthernet0/0
 ip nat inside
 exit

interface Serial0/0
 ip nat outside
 exit

interface Serial0/1
 ip nat outside
 exit

ip access-list extended NAT
 permit ip 192.168.4.0 0.0.0.255 any
 exit

ip nat pool R5 10.0.25.4 10.0.25.10 netmask 255.255.255.0
ip nat inside source list NAT pool R5