Multiple Subnet behind pfsense firewall.

[noppadon.na]

I try to testing a pfsense firewall, i have a problem as below,
i have 3 subnet behind pfsense firewall use gateway for connect each subnet.
problem…
    network that same interface firewall (192.168.1.XXX) can use secure web and can use ping command to outside, But 2 Subnet(192.168.2.xxx and 192.168.3.xxx ) can not use secure web (https://) and can't send package to outside (ping). Pls help me for solve this cause.
But before change to pfsense old forewall can used(no problem this cause)

Internet 
                        ISP
                          |
                          |
                Pfsense firewall
                          |
                          |
                    (Subnet A)
                          |
                          |
                      GW L3--- (Subnet B)
                          |
                          |
                    (Subnet C)

Summary...
        Subnet A can access internet.
        Subnet B and C can't access internet.
        I try to test allow all at rule, But still not work.
*** the last time i use ISA2000 can access ****

[hoba]

This is the same problem like here: http://forum.pfsense.org/index.php?topic=293.0
You have to use advanced outbound nat to create additional nat mappings for the internal networks pfsense doesn't see directly (in the webgui at Firewall>NAT, outbound tab).

Also make sure you have all routes setup accordingly.