DHCP, DNS, and NAT
Static NAT - correct answer ✔✔Allows one-to-one mapping between local and global addresses.
Requires one real Internet IP address for every host on your network.
Dynamic NAT - correct answer ✔✔Allows the ability to map an unregistered IP address to a registered IP
address from out of a pool of registered IP addresses.
Need to have enough public IP addresses for everyone who's going to be sending packets to and
receiving from the internet at the same time.
Overloading - correct answer ✔✔From of NAT that maps multiple unregistered IP addresses to a single
registered IP address (many-to-one) by using different source ports.
Port Address Translation (PAT) - correct answer ✔✔Another name for Nat Overload
Inside Local Address - correct answer ✔✔The IP address of the source host before translation
Outside Local Address - correct answer ✔✔Address from which source host is known on the Internet.
This is usually the address of the router interface connected to the ISP
Inside Global Address - correct answer ✔✔Source host address used after translation to get onto the
internet
Outside Global Address - correct answer ✔✔Address of outside destination host
ip nat inside source static (source IP) (translated IP)
int (inside interface number)
, ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands for configured basic static NAT
ip nat pool (pool name) (starting IP) (ending IP) (netmask)
access-list (ACL Number) permit (source network) (source wildcard mask)
ip nat inside source list (ACL number) pool (pool name)
int (inside interface number)
ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands to configured dynamic NAT
access-list (ACL number) permit (source network) (source wildcard mask)
ip nat inside source list (ACL number) (interface or translated IP) overload
int (inside interface number)
ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands to configure PAT
Static NAT - correct answer ✔✔Allows one-to-one mapping between local and global addresses.
Requires one real Internet IP address for every host on your network.
Dynamic NAT - correct answer ✔✔Allows the ability to map an unregistered IP address to a registered IP
address from out of a pool of registered IP addresses.
Need to have enough public IP addresses for everyone who's going to be sending packets to and
receiving from the internet at the same time.
Overloading - correct answer ✔✔From of NAT that maps multiple unregistered IP addresses to a single
registered IP address (many-to-one) by using different source ports.
Port Address Translation (PAT) - correct answer ✔✔Another name for Nat Overload
Inside Local Address - correct answer ✔✔The IP address of the source host before translation
Outside Local Address - correct answer ✔✔Address from which source host is known on the Internet.
This is usually the address of the router interface connected to the ISP
Inside Global Address - correct answer ✔✔Source host address used after translation to get onto the
internet
Outside Global Address - correct answer ✔✔Address of outside destination host
ip nat inside source static (source IP) (translated IP)
int (inside interface number)
, ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands for configured basic static NAT
ip nat pool (pool name) (starting IP) (ending IP) (netmask)
access-list (ACL Number) permit (source network) (source wildcard mask)
ip nat inside source list (ACL number) pool (pool name)
int (inside interface number)
ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands to configured dynamic NAT
access-list (ACL number) permit (source network) (source wildcard mask)
ip nat inside source list (ACL number) (interface or translated IP) overload
int (inside interface number)
ip nat inside
int (outside interface number)
ip nat outside - correct answer ✔✔Commands to configure PAT
