Static NAT vs PAT

I am totally confused as to what the difference between the two are. If anyone can clarify that would be great. They both literally sound the same, are there any small difference that I don't know about? Thanks for any help!

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Comments

OfWolfAndMan

PAT is using one public IP address for a private network of multiple devices (Like your home. Etwork) while static NAT is more of one to one. Each machine could have it's own public IP, but one private IP is mapped to one public. You could always just assign the public IP addresses if you had enough by configuring the public address pool, but generally it's more secure to configure NAT.

aolish

thanks appreciate the reply.

ImYourOnlyDJ

PAT is also known as NAT overload (or more specifically Dynamic NAT overload). I was talking to some industry professionals that had never heard of PAT as they only heard it reffered to as NAT overload.

Vask3n

ImYourOnlyDJ wrote: »

PAT is also known as NAT overload (or more specifically Dynamic NAT overload). I was talking to some industry professionals that had never heard of PAT as they only heard it reffered to as NAT overload.

Like folks have already mentioned, think of it like this:

Static NAT means we are statically assigning a translation from one address of to another address.

PAT means we are saying "Multiple IP addresses are translated to this one address"

ImYourOnlyDJ

Vask3n wrote: »

Like folks have already mentioned, think of it like this:

Static NAT means we are statically assigning a translation from one address of to another address.

PAT means we are saying "Multiple IP addresses are translated to this one address"

Very good explanation! I forgot to mention that static NAT is similar (maybe the same as?)to port forwarding used on consumer grade routers. For example I'm running static NAT for port 80 to my home webserver, but the same router is also running NAT overload to provide internet connectivity to the rest of the devices.