Routing problem with vlan after nat

[ramonmitcs]

hi,

pleasant day to all.

my present setup before pfsense installation:

vlan 1 (192.168.1.0/24) –>layer 3 switch <-- (vlan2 192.168.2.0/24)
member vlan 1                                            member vlan 2
computer 1                                                  computer 10 (webserver 192.168.2.3/24)
computer 2                                                  computer 11
gw 192.168.1.254                                        gw 192.168.2.254

the present setup above had no problem. vlan 1 could access the computers in vlan2 and vice versa. Then i installed a pfsense box with 2 nics. 1 public ip (203.177.xxx.xxx) and the other with  ip address of 192.168.2.120/24 member of vlan2. The purpose of which is to port forward the http request from 203.177.xxx.xxx to my web server 192.168.2.3. I followed the documentation and now the port forwarding works like a charm.

However, I am at a loss now how can my vlan 1 connect to my webserver since i changed the gw from 192.168.2.254 (layer 3 switch interface) to 192.168.2.120 (pfsense box) in the web server.

Any pointers is highly appreciated.

Thank you,
Mon