With the below given configuration on my pix firewall, NAT is working properly and three local ip get mapped to x.x.x.43-45 public ips but PAT is not working.
ip address ouside x.x.x.42
ip address inside 192.168.12.1
global(outside) 1 x.x.x.43-x.x.x.45
global(outside) 1 x.x.x.46
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
Whats wrong with my entries, please lead me in right direction.