How NAT Oversubscription works?

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L2 Linker

How NAT Oversubscription works?

Hi experts,

 

I am trying to understand how NAT oversubscriptions works in Plao Alto. What will be its exact use case and how firewall behaves in default settings?


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L4 Transporter

Re: How NAT Oversubscription works?

Oversubscription allows the same address and port combination to be used multiple times for NAT. The default settings are dependent on firewall model.

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L5 Sessionator

Re: How NAT Oversubscription works?

Agreed with @rmfalconer . NAT Superscription gives you more scalability when we have few public IP addresses. So this setting multiplies the sessions to 2, 4 or 8 times. Model wise default subscription rates are given in below link.

 

https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-admin/networking/nat/dynamic-ip-and-port-nat-ove...

 

Mayur



Mayur Sutare

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Highlighted
L4 Transporter

Re: How NAT Oversubscription works?

Oversubscription allows the same address and port combination to be used multiple times for NAT. The default settings are dependent on firewall model.

View solution in original post

Highlighted
L5 Sessionator

Re: How NAT Oversubscription works?

Agreed with @rmfalconer . NAT Superscription gives you more scalability when we have few public IP addresses. So this setting multiplies the sessions to 2, 4 or 8 times. Model wise default subscription rates are given in below link.

 

https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-admin/networking/nat/dynamic-ip-and-port-nat-ove...

 

Mayur



Mayur Sutare

View solution in original post

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L2 Linker

Re: How NAT Oversubscription works?

@rmfalconer @SutareMayur ,

 

Thank you guys, that makes sense to me.

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