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How to know the benefits of easily Easy Learning Network address translator (NAT) - CCNA

“On this page you will find about the benefits of easily Easy Learning Network address translator (NAT). Network address translator (NAT) a major role in IT department and in the Computer professional . We will explain why easily Easy Learning Network address translator (NAT) is important, how to Learning Network address translator (NAT), and how to learn it if you're unfamiliar with Network address translator (NAT). "

What is Network address translator (NAT) and why is it important?

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Why is Network address translator (NAT) impotent?

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Network address translator (NAT) and Reminders:

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How to know the benefits of easily Easy Learning Network address translator (NAT):

Network address translator

NAT is used to remapping one ip Address space into another ip address. Nat improves the security when private source private ip is changed to source public ip is called nat.

Types:

1.static nat

2.dynamic nat

3.oberload nat(pet)

Static nat:

One to one mapping allows only ip address from local to global.

Syntex:

Router(config)#ip nat inside source static <original ip><mapped ip>

Router(config)#interface fa 0/0

Router(config-if)#ip nat inside

Router(config-if)#interface se 2/0

Router(config-if)#ip nat outside

Dynamic nat:

Many to many mapping allows many unregistered ip address from the pool.

Syntex :

Router(config)#ip nat pool <name> 255.0.0.1 255.0.0.3 netmask 255.0.0.0

Router(config)#access-list <num>permit any

Router(config)#ip nat inside source list <num>pool <name>

Router(config)#interface fa 0/0

Router(config-if)#ip nat inside

Router(config)#interface se 2/0

Router(config-if)#ip nat out side

Overload nat:

This is called pat [port address translator]

Many to one mapping allows many unregistered ip addresses into a single registered one. Ip address from the pool.

Syntex :

Router(config)#ip nat pool <name> 54.1.1.1 54.1.1.1 network 255.0.0.0

Router(config)#access -list <num>petmit any

Router(config)#ip nat inside source list <num>pool <name overload>

Router(config)#interface fa0/0

Router(config)#ip nat inside

Router(config)#interface se 2/0

Router(config)#ip nat outside

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