I am settint up a firewall with IP masquerading. I have followed the HOWTO and compiled the kernel with all the required options. When I follow the HOWTO, I get to a point, where I am supposed to issue the following command:
ipfwadm -F -p deny
At this point I get the following error message:
ipfwadm: setsockopt failed: Protocol not available.
What does it mean and how do I fix it?