Strange routing problem with multiple public IP

[Guest]

[papipa]

Hi guys, I've a curious problem with Endian Firewall using multiple public IP...

I've 2 servers on the same subnet mask 192.168.1.0/24, the first (named A) is 192.168.1.50 and the second (named B) is 192.168.1.1
The Endian firewall manage 10 Public IP from X.X.X.81 to X.X.X.90 with /28 bit mask
The Endian firewall use as default IP the X.X.X.90 to go out
The Server A use the x.x.x.91 with the port forwarding of port 80 and also sue the same IP to go out by a specified Source NAT rule
The Server B use the x.x.x.81 with and use the same IP to go out by a specified Source NAT rule

If Server A try to conntect to server B to x.x.x.81 the session goes to timeout and in endian firewall log result only the outgoing traffic from 192.168.1.50 (Server A) via Outgoing rule but nothing appears in incoming roules to Server B via x.x.x.81.

I've tried to use the default Public IP address assigned to Endian to go out with the Server A but I obtain the same error.

If I configure a new orange network segment and configure a new and different internal subnet like 192.168.10.0/24 and put there an other Server (named C) that goes out to internet with the same public IP x.x.x.91 or another public IP all works well.

Have you any idea of where I'm in error?

Thank you a lot!
Paolo