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Daniyal007
Explorer
December 4, 2025
Question

Fortiweb flow with load balancer

  • December 4, 2025
  • 2 replies
  • 374 views

Hi there,

i am configuring fortiweb on F5 Load balncer but i am facing an issue that my fortiweb is also using the certificate and F5 load balncer is also using the certificate, as per fortiweb servers in ip pool must accept the traffic on port 80 but in my senerio ip in server pool is F5 Vip ip address which accepts the traffic on port 443 , is there any way that fortiweb decrpt the incoming packet do security stuff and then re-encrpt the traffic and then send it to F5 load balancer. because right now i am facing an ssl error , ssl error connection reset .

 

as well as i want to know if i can add 2 default routes on fortiweb ab i have two incoming links configured as 2 vips in my fortiweb 

2 replies

AEK
SuperUser
SuperUser
December 4, 2025

Hi Dan

Yes FWB can decrypt, scan, then re-encrypt.

According to your description, in the server pool rule you probably just need to enable SSL and set port 443.

 

fwb.png

 

Regarding the second part (2 default routes), I usually add one single default route (e.g. on port1) and use policy route to force the traffic outgoing with IP2 to exit from port2, and it works just fine.

 

On the other hand, just an advice, in most cases found that there is no need to add an extra load balancer behind FortiWeb, since FWB performs load balancing for Web traffic just perfectly. Adding LB equipment for no valid reason can be just wast of money and performance, and also adds complexity for no gain.

AEK
filiaks1
Explorer III
December 17, 2025

Hope you do not have asymetric routing where the return traffic goes directly to F5 ? Then see Overview of the FastL4 profile as loose initiation and loose close can be enabled.

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