I have cisco pix firewall that is connected with my enterprise network. I wanted to run OSPF between entrprise router and pix firewall. I will configure my pix one interface into ospf area 1. My enterprise network will also use the internet via this firewall. Enterprise will also have default route towards that firewall bcz they wanted to acceess the internet.
Kindly tell me how to configure my firewall not only for OSPF but also for configure of Internet.
One solution will to use nonat so that everything from enterprise goes as it to my internet firewall C.
I am confuse about the firewall interface placement, shall i configure outside interface into OSPF or configure Firewall inside interface into OSPF.
Kindly see the network diagram and do let me know interface placement. should i place outside interface towards Enterprise network or inside interface towards the enterprise network.