ROUTER ADSL 800 WITH A FIREWALL

[csco10825]

Hello,

I want to configure a router CISCO 800 adsl, with a firewall behind. Does somebody have some configuration of this type?. Do I need two public ip, one for the router and another for the fire wall? Or with a public ip it is enough? In other router marks (3com, etc) the public ip has it the firewall the router only makes of switch, but with Cisco I have not configured none, with a firewall behind

Thank you for the attention

[a-vazquez]

You can use the Single Public IP for router to connect the internet and use the router ethernet interface to connect with firewall. There is no need for two public IP's required.