OSPF on PIX 6.3 using only one interface vs all interfaces

[joegarmon]

I need to configure one firewall to run OSPF using only a single interface. I need to configure a second PIX 515 supporting OSPF over 5 interfaces including the outside interface.

How do I block routing updates from leaving my private network out my outside interface. If that is the default, how do I allow routing updates to go out my outside interface on my internal firewall.

Is it just with network commands?

[mchin345]

In order to block routing updates from leaving my private network out my outside interface, access list is a better option. With access list you can deny ip addresses that needs to be blocked from going through the outside interfaces.

Won't access lists help you in this situation?.