Table of Contents
12.8.4 Call Progression ..................................................................................................... 185
12.9.4 Call Progression ..................................................................................................... 188
Phone Usage ......................................................................................................................... 191
13.3 Internal Calls .................................................................................................................... 191
Firewalls................................................................................................................................. 195
14.1 Firewall Overview ........................................................................................................... 195
14.2 Types of Firewalls ............................................................................................................ 195
14.4 Denial of Service ............................................................................................................. 197
14.4.1 Basics ..................................................................................................................... 197
14.5 Stateful Inspection ........................................................................................................... 200
14.5.3 TCP Security .......................................................................................................... 202
14.5.4 UDP/ICMP Security ................................................................................................ 203
14.7.1 Packet Filtering: ..................................................................................................... 205
14.7.2 Firewall ................................................................................................................... 205
Chapter 15
Firewall Configuration .......................................................................................................... 207
16
P-2602H(W)(L)-DxA User's Guide