As far as I know that's impossible with only one public IP.  A packet would come in and the router would have no idea which IP in a range it needs to be sent to.  You can only forward to one IP inside the NAT.In home-user land there is uPNP but I don...

So you've done "access-group 10 out" on the interface facing the internet and it's not working?Are you wanting to make it so people can connect in from the internet to your local machines for services like FTP or PPTP?  At the moment your ACL looks l...

Do you want 172.16.3.1 to access the internet at all?From what I can work out you have one router with 3 ports.  One going to 10.x, one going to 172.x and the other going onto the internet.IF the 172.x server doesn't need to access the internet then ...