300-710 SNCF: Securing Networks with Cisco Firewalls

In Cisco Secure Firewall Management Center, a basic access control policy that blocks all traffic by default is created by first navigating to Policies > Access Control, then selecting New Policy and giving it a unique name, then choosing the policy's Default Action and selecting Block all traffic so that any traffic not explicitly matched by a rule is blocked, and finally selecting the target device(s), clicking Add to Policy, and saving the policy so the configuration can be deployed.