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

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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L6 Presenter

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 S.

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All Replies
L4 Transporter

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

L6 Presenter

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 S.

View solution in original post

L2 Linker

@rmfalconer @SutareMayur ,

 

Thank you guys, that makes sense to me.

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