Firewalls................................................................................................................................. 155
11.1 Firewall Overview ............................................................................................................. 155
11.4 Triangle Route ................................................................................................................. 158
11.7 Example Firewall Rule ..................................................................................................... 167
11.8 Firewall Thresholds ......................................................................................................... 171
11.8.1 Threshold Values .................................................................................................... 172
Content Filtering ................................................................................................................... 175
Introduction to IPSec............................................................................................................ 179
13.1 VPN Overview ................................................................................................................. 179
13.1.1 IPSec ...................................................................................................................... 179
13.1.3 Other Terminology .................................................................................................. 179
13.1.4 VPN Applications ................................................................................................... 180
13.2 IPSec Architecture ........................................................................................................... 180
13.2.1 IPSec Algorithms .................................................................................................... 181
13.2.2 Key Management ................................................................................................... 181
13.3 Encapsulation .................................................................................................................. 181
13.3.1 Transport Mode ...................................................................................................... 182
13.3.2 Tunnel Mode ......................................................................................................... 182
P-2802H(W)(L)-I Series User's Guide
................................................................................... 163
Table of Contents
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