External ALB -> VM-series 300 -> Internal ALB -> server (listening on tcp/15000)
Having issues routing from external ALB to the server over port 15000 ?
Added listener port http:15000 on the ALB and forwarded it to the target group containing the firewall
Created destination NAT (untrusted to untrusted) on the firewall with source address translation (comes out of the trusted)
Created a policy to pass any traffic to the internal load balancer
Added a listener port http:15000 on the internal ALB to forward to the server.
no blocks on the security groups
Still having issues connecting
In reviewing this and your other post which seems to be somewhat related, I would encourage you to engage your Palo Alto Networks SE. We have resources that can assist with straightening this out. Your external ALB should have a listener on the proper app port such as 443 and the target group mapping is port 15000 which the firewall is listening on. The NAT rule on the firewall will then have original source port of 15000 and a destination NAT of the internal ALB listener.
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