Day 44 Flashcards - NAT (Part 1)
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20 Terms
Private IPv4 addresses are defined in RFC […].
1918
What is the class A range of private IPv4 addresses?
10.0.0.0/8
What is the class B range of private IPv4 addresses?
172.16.0.0/12
What is the class C range of private IPv4 addresses?
192.168.0.0/16
Can private IPv4 addresses be used over the Internet?
No
What does NAT stand for?
Network Address Translation
[…] NAT involves statically configuring one-to-one IP address mappings.
Static
Static Source NAT = […] address is mapped to […] address.
Inside Local / Inside Global
Cisco NAT terminology:[…] = The IP address of the inside host from the perspective of the inside network.
Inside Local
Cisco NAT terminology:[…] = The IP address of the inside host from the perspective of the outside network.
Inside Global
Cisco NAT terminology:[…] = The IP address of the outside host from the perspective of the inside network.
Outside Local
Cisco NAT terminology:[…] = The IP address of the outside host from the perspective of the outside network.
Outside Global
Configure the NAT inside interface:R1(config-if)# […]
ip nat inside
Configure the NAT outside interface:R1(config-if)# […]
ip nat outside
Configure a static source NAT mapping:R1(config)# […]
ip nat inside source static inside-local-ip inside-global-ip
When only source NAT is used, in the output of show ip nat translations you can expect the […] and […] addresses to be the same.
outside local / outside global
Show the NAT translation table:R1# […]
show ip nat translations
Show the NAT statistics:R1# […]
show ip nat statistics
Clear all dynamic NAT translation entries:R1# […]
clear ip nat translation *