pfsense lan to wan route

Hi,

I have setup a pfsense 2.3.4 recently as a transparent proxy. I have lan net 192.168.1.0/24 and pfsense ip 192.168.1.253. All PCs in the network can go internet from pfsense. But I notice that when i do tracert from the client PC seem like it go direct to wan ip rather than from pfsense ip. May I know is it possible to get all lan net ip only can go internet from pfsense ip?