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adam283849
adam283849
New Member
March 19, 2025
Question

FortiADC Full NAT vs Direct routing vs DNAT vs direct routing

  • March 19, 2025
  • 2 replies
  • 1256 views

Hello i feel so confuse about 

FortiADC Full NAT vs Direct routing vs DNAT when i do Virtual server configurations

 

i worked alot  with F5 but i realy like FortiADC but i wish if i have simple explaination

could you please tell me

if i want to activate SNAT in F5 = Full NAT with source NAT pool right?

but my important question i want to disable SNAT in FortiADC = Do i need to use DNAT or direct routing 

 

Regards 

Adam

2 replies

Anthony_E
Staff
Anthony_E
Staff
March 23, 2025

Hello Adam,


Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.


Thanks,

Best Regards
shafiq23
Staff & Editor
shafiq23
Staff & Editor
March 24, 2025

Hello @adam283849 

 

By default, Layer 4 VS uses DNAT as its packet forwarding method and source IP will not be NAT'd. Direct routing is basically a No NAT. I believe document below will help you understand packet forwarding method difference available in FortiADC Layer 4 VS.

 

https://docs.fortinet.com/document/fortiadc/7.4.0/server-load-balance-layer-4-deployment-guide/222941/server-load-balance-layer-4

Thanks.

 

Regards,

Shafiq

    adam283849
    adam283849Author
    New Member
    April 2, 2025

    Hi this just show L4 what about L7 NAT how its look like?

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