I'm trying to set up a Cisco ASA 5505 and need some help with routing. I'm mainly setting things up through ASDM but I also have console access. Right now while I'm setting it up I have the outside/Vlan2 port attached to my existing network and a laptop connected to the inside/Vlan1 port. More info about that:
interface Vlan1
nameif inside
security-level 100
ip address 10.10.153.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 10.10.152.9 255.255.255.0
!
Here is what my current routing table looks like:
Gateway of last resort is 10.10.152.1 to network 0.0.0.0
C 10.10.152.0 255.255.255.0 is directly connected, outside
C 10.10.153.0 255.255.255.0 is directly connected, inside
S* 0.0.0.0 0.0.0.0 [1/0] via 10.10.152.1, outside
Before I added that last "0.0.0.0" entry, the ASA would not see anything on the internet. Now I can ping any external IP address from the router's console. However, the laptop I have connected to the 'inside' port still cannot reach any IP address outside the 10.10.153.0 network. Every time I try to add a similar route for the 'inside' interface, I get the following error: "You have another route configured for this network any which has same gateway 10.10.152.1 and same metric 1. You cannot add a duplicate route." I know I'm misunderstanding something here. In order to make devices connected to the 'inside' port connect to the internet, I need to set up a new route that will direct these devices to 10.10.152.1, right? What am I doing wrong here?