Chapter 5. Cisco Security Appliances and Applications
Cisco Secure PIX Firewall and Cisco Adaptive Security Appliance Firewall
- A PIX Firewall functions on a connection-based security policy, and logic is based on the Adaptive Security Algorithm (ASA). Every inbound packet is checked against the algorithm and against connection-state information in memory.
- The PIX Firewall supports Network Address Translation (NAT) and Port Address Translation (PAT).
- The outside interface on the PIX is untrusted, and the security level on that interface is set to 0; the inside, or trusted, interface is set to 100 by default.
- nameif hardware_id if_name security_level vlan_id—Names the inside and outside interfaces and assigns the security levels (in global configuration ...
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