NAT with more Interface with same IP network range

[HappyUser86]

Hello guys,

I need your help for the configuration of my pfsense router and I feel very glad if you can help me. :)

The situation is:

we have few labs all with the same network range 10.248.11.x /24 (interface em1, em2, …), the interface has always the static ip 10.248.11.254.
and we have one server ( 192.168.1.5 /24 ) in the proper network, which should be connected to all labs (interface em0) on the ip 192.168.1.1.

It's only important that I can reach this server from the labs.

All interfaces are active.
Firewall: NAT: Outbound is automatic activated.
No configuration are set in System: Gateways and System: Static Routes.

The currently route table is attached.

I can ping from a device 10.248.11.1 from lab1 (em1) through the router to the server 192.168.1.5.
But a ping from a device 10.248.11.2 from lab2 (em2) does't work to the router 192.168.1.1.

I'm not sure how I should do the configuration for the gateways. Could you tell me some tipps?
If you need more information, just ask me and I will answer.

Thank you friends...  ;)

HappyUser86