It has many nicknames. Network masquerading, IP-masquerading, and Native Address Translation. It is the process of rewriting the source/destination addresses of IP packets when they go through a router or firewall. Show What are the three methods of NAT? Static, Dynamic, and overloading (Port Address Translation - PAT) How does static NAT work? There is a one-to-one mapping between local and global IP addresses. How does dynamic NAT work? This version gives you the ability to map an unregistered IP address to a registered IP address from out of a pool of registered IP addresses. How does overloading work? Overloading is a form of dynamic NAT that maps multiple unregistered IP addresses to a single registered IP address -- many-to-one -- by using different ports. Also called PAT (Port Address Translation).
What command can you use to show the NAT translations as they occur on your router? What command will show you the translation table? What command will clear all your NAT entries from the translation table? clear ip nat translations How much memory does each NAT mapping use (approximately)? Why would you use the ip nat translation max-entries command? In the rare cases where the entries must be limited for either performance or policy reasons.
What commands must be used on your router interfaces before NAT will translate addresses? The ip nat inside and ip nat outside commands. In the following output, what type of NAT is being used?
Instead of the netmask command, you can use the _________ statement. Which of the following are disadvantages of using NAT?
Which of the following are advantages of using NAT?
Which command will allow you to see real-time translations on your router? the comand "debug ip at" will show you in real-time the translations occurring on the router. Which command will show you all the translations active on your router? "show ip nat translations" will show you the translation table with all active NAT entries. Which command will clear all the translations active on your router? The command "clear ip nat translations *" will clear all the active NAT entries in your translation table. Which command will show you the summary of the NAT configuration? The "show ip nat statistics" command displays a summary of the NAT configuration as well as counts of active translation types, hits to an existing mapping, misses (causing an attempt to create a mapping), and expired translations. Which command will create a dynamic pool named Todd that will provide you with 30 global addresses? ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224 - The network range and the mask must both be for 30 hosts Which are considered the three methods of NAT? Static, Dynamic, and NAT overload (PAT).
instead of "netmask" command, you can use the "prefix-length".
Check you interfaces for the correct configuration. You must have "ip nat inside" and "ip nat outside" configured on your router's interface. Which of the following would be a good reason to run NAT?
Which of the following is considered to be the address after translation? The host on the private network after translation is considered to be the inside global host. Which of the following is considered to be the address before translation? The host on the private network before translation is considered to be an inside local host. Which of the following is considered to be the destination host before translation? The host on the global network before translation is considered to be an outside local host. Which of the following is considered to be the outside destination host after translation? The host on the global network after translation is considered to be an outside global host. Which command would you place on an interface on a private network? Which command would you place on an interface connected to the internet? Port Address Translation is also termed what? nat overload, because it is the command used to enable PAT. Which is considered to be the address before translation?The Inside local is the source host inside address before the translation. The outside local is the address from which the source host is known on the Internet and it is usually the IP of the router interface connected to the ISP.
Which of the following is considered to be the address after translation *?Explanation: The host on the private network after translation is considered to be an inside global host.
What is outside local and outside global?Outside Local – a host that physically exists on the Outside network, as seen from the perspective of the Inside network. Outside Global – a host that physically exists on the Outside network, as seen from the perspective of the Outside network.
What are inside local inside global outside local outside global addresses?First, we need to understand two terms; inside and outside. The term inside is used to refer the IP addresses configured inside the network where the user is standing and observing, including the IP addresses of the LAN router. Outside address is any IP address in the public internet, outside the local network.
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Which of the following is considered to be the address before translation * Inside global inside local outside local outside global?
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