Nat Table

Is there any command in which i would be able to see the NAT table i mean i want to see what ip is using one internal ip to go out through the NAT if i got a NAT pool configureda mean like a range... i would like to know if there is some command i would be able to see in a table something like this 192.168.1.1-->172.16.20.1 192.168.1.2-->172.16.20.5 for example the 192.168.1.1 is using 172.16.20.1 to go out.... Okay here is the scenario i got a Routed VPN trough firewalls Internal Network 1 = 192.168.1.0/24 Fortigate A Internal Network 2 = 192.168.2.0/24 Fortigate B WAN between them = 172.16.20.0/24 Okay i would like to do this; the people from the 192.168.2.0/24 they actually can see the 192.168.1.0/24 as it is Now i would like that the people from the 192.168.2.0/24 to see the 192.168.1.0/24 network as 172.16.20.0/24 I already done this by doing a VIP of the whole 192.168.1.0/24 network And putting NAT checkbox in the rule of the internal to the fortigate routed interface on fortigate A. And on fortigate B i removed the route which find the 192.168.1.0/24 and added the route for the whole network of the 172.16.20.0/24 It works fine... but what i m not sure is that when a packet for example 192.168.1.4 is going out from fortigate A to fortigate B translated to 172.16.20.4 instead of using i dont know the fortigate ip(the one on the fortigates virtual interface ) What im not sure is where i should put the ippool to force 192.168.1.1/24 to go out through 172.16.20.1 im putting a whole range in the ippool and im assuming its going by order but im not sure if im doing this right... I dont know if you get what im trying to do? The issue here is this one we have 3 sites 2 sites got this internal ip address 192.168.1.0/24 fortigate A and fortigate B and one got 192.168.2.0/24 fortigate C We want to totally hide one of the 192.168.1.0/24 so we would be able to route traffic through all sites without changing the internal network address of any of the site, doing nat. At the end we want that Fortigate C would be able to just see one 192.168.1.0/24 the other site that has 192.168.1.0/24will be 172.16.20.0/24 but this will be hidden by the NAT. What i dont know if this is the best way to achive this but its the only way i could think of doing this, if you got any other way you can let me know. Otherwise i would like help to finish the idea i got, and how to test it.