Terms you'll need to understand:
Stateful inspection
State table
Access control lists (ACLs)
Access control entries (ACEs)
Session information
Connection-oriented
Connectionless
Control channel
Data channel
Three-way handshake
SYN
SYN-ACK
ACK
Established state
Half-opened session
Embryonic
Unassembled packets
State structure allocation
Legal Simple Mail Transfer Protocol (SMTP) commands
Demilitarized zone (DMZ)
Inbound
Outbound
Port-to-application mapping (PAM)
Techniques you'll need to master:
Configuring event logging
Configuring global context-based access control (CBAC) parameters
Configuring named CBAC inspection rules
Configuring unique CBAC inspection rules
Configuring CBAC to inspect traffic
Configuring nonstandard port CBAC inspection
Verifying CBAC
Testing CBAC