NAT local network

[sanjibgupta]

Hi
In pfsense 2.4.4 i have the following configuration

1. WAN -> 172.24.137.181/30
2. LAN -> 192.168.20.2/24

I am able to browse internet from my local LAn (192.168.20.xx/24) with my global ip (210.xxx.xx.254/28)

Now i have a router in packet mode which has ip 172.168.1.1/24.

I have added route in the pfsense so i can ping 172.168.1.3/24 (from the pfsense box) and can also reach 192.168.20.2 (from 172.168.1.3)

But i cant reach the internet (as i feel no proper NAT is there)

How to add a NAT so that the network 172.168.1.0/24 goes to internet with 210.xxx.xx.253 or by any other ways so that the local ip (172.168.1.0/24) can reach the internet.
Thanks
Sanjib Gupta