Day 45 Flashcards - NAT (Part 2)

Configure a pool for dynamic NAT:R1(config)# […]

ip nat pool pool-name start-ip end-ip [prefix-length prefix-length | netmask subnet-mask]

Configure dynamic NAT:R1(config)# […]

ip nat inside source list access-list pool pool-name

Configure dynamic PAT using an address pool:R1(config)# […]

ip nat inside source list access-list pool pool-name overload

Configure dynamic PAT using the router's interface IP:R1(config)# […]

ip nat inside source list access-list interface interface overload

In dynamic NAT/PAT, what is used to identify traffic that should be translated?

an ACL

In dynamic NAT, what is used to identify the range of public IP address that can be used for translations?

A NAT pool

What does PAT stand for?

Port Address Translation

What is another name for PAT?

NAT Overload

Which form of NAT is most useful for preserving public IP addresses?

PAT / NAT Overload

What does a router do if a packet requires NAT but no inside global addresses are available?

It drops the packet

When an ACL is used to identify traffic in dynamic NAT/PAT, what happens to traffic permitted by the ACL?

It is translated by the router

When an ACL is used to identify traffic in dynamic NAT/PAT, what happens to traffic denied by the ACL?

It is not translated by the router (but the traffic is not dropped!)

In which form of NAT does the router automatically create one-to-one IP address mappings?

Dynamic NAT

In which form of NAT are multiple inside local addresses translated to a single inside global address at the same time?

PAT  /  NAT Overload