We currently have 1 static public IP in our current config (attached). I have just acquired a new block of 5 IP addresses and I tried switching this over yesterday but I had problems. My new pool of static IP consist of xx.xx.37.153 to xx.xx.37.157 with the gateway being xx.xx.37.158.
I changed my outside IP to one of the public ip's in the list (ip address xx.xx.37.153 255.255.255.248), I changed the default route statement to point to the new gateway (route outside 0.0.0.0 0.0.0.0 xx.xx.37.158) and I changed my access-lists to reflect the change in IP.
I would like to NAT using one IP.
After doing all of this I could only browse the internet if I were directly plugged into the cable modem, but I could not get out behind the ASA.
What did I do wrong?