What is NAT inside and outside interface?
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What is NAT inside and outside interface?
Routers are inspecting incoming and and outgoing packets if they are configured to do so. The “ip nat inside source” means to inspet an incoming packet originated from an “outside” interface (configured as: ip nat outside) towards an “inside” interface (configured as: ip nat inside) and act accordingly.
What is NAT configuration?
NAT stands for network address translation. It’s a way to map multiple local private addresses to a public one before transferring the information. Organizations that want multiple devices to employ a single IP address use NAT, as do most home routers.
What is NAT Order of Operations inside to outside?
In its most basic form, NAT translates one IP address to another IP address. When the router uses this order of operations, it takes the inbound packet, starting at the top and moves down the list. If the packet is from a NAT inside-designated interface, it uses the inside-to-outside list.
When configuring NAT What is the purpose of the overload command?
Key Concept – NAT Overload is a special form of dynamic NAT that allows many-to-one mapping of local addresses to a smaller number global addresses from a pool of global addresses. The pool of global addresses may even consist of a single address. NAT Overload is also called Port Address Translation (PAT).
What is inside global IP address in NAT?
NAT – Understanding Local, Global,Inside and Outside Address.
How do I configure ip nat inside static source?
To configure static NAT, three steps are required:
- configure private/public IP address mapping by using the ip nat inside source static PRIVATE_IP PUBLIC_IP command.
- configure the router’s inside interface using the ip nat inside command.
- configure the router’s outside interface using the ip nat outside command.
What is the purpose of a DMZ?
The end goal of a DMZ is to allow an organization to access untrusted networks, such as the internet, while ensuring its private network or LAN remains secure.
How do I show ip NAT translation?
To display active Network Address Translation (NAT) translations, use the show ip nat translations EXEC command.
Which of the following would be good reason to run NAT?
It conserves global addresses, which allow us to add millions of hosts to the Internet without “real” IP addresses. This provides flexibility in our corporate networks. NAT can also allow you to use the same subnet more than once in the same network without overlapping networks.
What is NAT with IP overload?
NAT Overload, also known as PAT (Port Address Translation) is essentially NAT with the added feature of TCP/UDP ports translation. The main purpose of NAT is to hide the IP address (usually private) of a client in order to reserve the public address space.
How do I clear ip nat translation?
To clear dynamic Network Address Translation (NAT) translations from the translation table, use the clear ip nat translation EXEC command.
- clear ip nat translation {* | [inside global-ip local-ip] [outside local-ip global-ip]}
- ip nat {inside | outside}
- ip nat inside destination list {access-list-number | name} pool name.