Network Access Control

This chapter covers the following topics:

• Packet filtering
• Advanced ACL features
• Content and URL filtering
• Deployment scenarios using access control lists
• Monitoring network access control
• Address translation
• DNS doctoring
• Monitoring address translations

Cisco Adaptive Security Appliances (ASA) can help protect one or more networks from intruders and attackers. Connections between these networks can be controlled and monitored by using the robust features that Cisco ASA offers. You can ensure that all traffic from the protected networks to the unprotected networks (and vice versa) passes through the firewall based on the organization's security policies. This chapter focuses on the features available for packet filtering and their implementations.