topic Re: How NAT Oversubscription works? in General Topics

How NAT Oversubscription works?

Vikashh — Fri, 29 May 2020 08:46:59 GMT

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?

Re: How NAT Oversubscription works?

rmfalconer — Fri, 29 May 2020 22:15:35 GMT

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

Re: How NAT Oversubscription works?

SutareMayur — Mon, 01 Jun 2020 09:28:00 GMT

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-oversubscription.html

Mayur

Re: How NAT Oversubscription works?

Vikashh — Mon, 01 Jun 2020 11:48:03 GMT

@rmfalconer @SutareMayur ,

Thank you guys, that makes sense to me.