1. This means that pfSense keeps track of active connections and allows return traffic through the firewall automatically.
2. Ingress and egress filtering.
3. Because the logs will fill up quickly.
4. (a) Floating rules can apply to more than one interface, and can be used on traffic either entering or leaving the interface. (b) The Quick option.
5. No; we must create a firewall rule to allow the traffic as well.
6. (a) No; (b) Yes
7. 1:1 NAT.