I need a little help configuring an ASA 5505 to work with a Dynamically assigned IP address. I have a comcast modem that received a Dynamic IP address from Comcast. Currently we have a DD-WRT Router acting as a "firewall" and it's WAN IP address is 10.1.10.2 (which is on the Comcast's subnet) while our trusted IP address for the router is 10.0.0.1.
I am just trying to get the ASA to pass internet traffic while using a Dynamic IP address and I only want ports 80, 8080, 443, and 3389 to be allowed from untrust to trust.