Port fordward on the same internal subnet

[hemin]

Hello,

I have an alarm touch panel that connects to the alarm server IP. This touch panel is locked and I can't change the server IP. I've changed the IP from the server (its a static lease DHCP) from 192.168.20.189 to 192.168.20.144 and the touch panel lost the connectivity. So now I want to redirect the xxxx tcp destination from 192.168.20.189 to 192.168.20.144.
What I've made is create a VIP alias mode with the IP 192.168.20.189 and then made a port forward from 189 to 144 but that don't works.
It is possible to do this? If yes, how?

Thanks