CCNA 200-120 NAT Simulation


CCNA 200-120 NAT Simulation

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A network associate is configuring a router for the Weaver company to provide internet access. The ISP has provided the company six public IP addresses of 198.18.184.105 – 198.18.184.110. The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of 192.168.100.17 – 192.168.100.30.

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A network associate is configuring a router for the weaver company to provide internet access. The ISP has provided the company six public IP addresses of 198.18.184.105 198.18.184.110. The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of 192.168.100.17 – 192.168.100.30.

The following have already been configured on the router:
– The basic router configuration
– The appropriate interfaces have been configured for NAT inside and NAT outside.
– The appropriate static route have also been configured (since the company will be a stub network, no routing protocol will be required)
– All passwords have been temporarily set to “cisco”.

The task is to complate the NAT configuration using all IP addresses assigned by the ISP to provide Internet access for the hosts in the Weaver LAN. Functionality can be tested by clicking on the host provided for testing.

Configuration information
router name – Weaver
inside global addresses – 198.18.184.105 198.18.184.110/29
inside local addresses – 192.168.100.17 – 192.168.100.30/28
number of inside hosts – 14

Answer : 

Step 1: Router Name 

Router>enable 
Router#configure terminal 
Router(config)#hostname Weaver 
Weaver(config)# 

Step 2: NAT Configuration 

Weaver(config)#access-list 10 permit 192.168.100.16 0.0.0.15 
Weaver(config)#ip nat pool  mynatpool 198.18.184.105 198.18.184.110 netmask 255.255.255.248 
Weaver(config)#ip nat inside source list 10 pool mynatpool overload 
Weaver(config)#end 

Step 3: Save Configuration 

Weaver#copy running-config startup-config 


Comments

  • Tamaki
    Reply

    This is great exercise, but I have 2 questions:
    1-If I did not have the answer, how can I know you use my Nat pool as the pool name?
    2-How can I know the number you use for the access-list? access-list “10”

    I think, Without those information, it will not b easy for anyone to accomplish this scenario.. You can have it right functioning, but you still get 25 in the test completion due the different number and name used..

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