I am working on a PIX 500 series firewall with one internal network (class c - public) address space.
I can get the internal (inside) hosts to access the internet with no problem. I cannot seem to have outside hosts access any internal hosts.
I have added:
access-list acl_out permit ip any any
access-group acl_out in interface outside
nat (inside) 0 x.x.x.x 255.255.255.0 0 0
Every sample pix config I see on the net assumes you want to use NAT. We don't want to use private addresses on the internal network.