We are having four networks connected together by a cisco pix. Network one has Domain controller, DNS and DHCP installed we dont want to repeat this on all the different networks since they are interconnected and we don't want to use the concept of child domain. The other networks have different subnets i.e.
Network 2 10.10.2.-
Network 3 10.10.3.-
Network 4 10.10.4.-
We want to join computers from this networks to our main domain which has the address of 10.10.1.- Can we do any configuration in our cisco pix router so that the four networks will be seen as one even-though they are in different networks. or how can we achieve this. Note we can ping from any of this locations to another.