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Line 3: − Probably the most commonly used type is dynamic NAT, this creates a one-to-one relationship between the remote and local devices when and where they are requested. Typically, the router's public IP address is itself dynamically assigned, and can therefore change at any time.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>+ − + + − +
types
==Types==
==Types==
===Dynamic NAT===
===Dynamic NAT===
This type creates a one-to-one relationship between the remote and local devices when and where they are requested. Typically, the router's public IP address is itself dynamically assigned, and can therefore change at any time.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>
===Static NAT===
===Static NAT===
Permanently maps an internal IP address to a public one. This is useful for allowing (often unsolicited) external traffic into a local server.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>
Permanently maps an internal IP address to a public one. This is useful for allowing (often unsolicited) external traffic into a local server.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>
===Overloading===
===Overloading (or Port Address Translation)===
IPs are added to the mappings table based on the source and destination ports that are used. Internal devices can always join the internal network and share the external address(es) as long as there are valid port numbers not in use.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>
===Overlapping===
===Overlapping===
When public addresses are used inside a network (thus overlapping private addresses onto public address space), a public address block can be used on multiple internal networks. Those "internal" addresses can be translated to other public addresses when connected to the "public" side of the router.<ref name="dummies - types of NAT">https://www.dummies.com/programming/networking/cisco/types-of-network-address-translation/</ref>
==Process==
==Process==