I have a PIX 515 which no one needs and I was playing a bit trying to do this:
On the inside int I have 10.20.22.1 in Vlan 5 which has a SVI 10.20.22.254 on a L3 switch which at its turn is the default gateway for PC 1.
On the PIX another interface has 192.168.1.1 in vlan 6 with no SVI so the PIX is the default gateway for PC 2.
A PC2 is in this vlan.
I need to access PC1 from PC 2 and also internet and I did not really found how I have to do the NAT in the PIX from 192.168.1.0 to 10.20.22.254.
Inside has 100 sec level and the other int is 60.
Lets say that the outside int is connected to the internet and 10.20.22.0 is NAT-ed behind a public IP.
It's a PIX 6.3
Apologies, i misunderstood.
nat (dmz) 1 192.168.1.0 255.255.255.0 dmz
global (inside) 1 interface
Note that you may or may not need the "dmz" keyword at the end of the NAT statement. If one doesn't work try the other.