P-2602H(W)(L)-DxA Series User’s Guide
Table of Contents
15
13.7 Packet Filtering Vs Firewall
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191
13.7.1 Packet Filtering:
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191
13.7.1.1 When To Use Filtering
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192
13.7.2 Firewall
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192
13.7.2.1 When To Use The Firewall
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192
Chapter 14
Firewall Configuration
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193
14.1 Access Methods
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193
14.2 Firewall Policies Overview
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193
14.3 Rule Logic Overview
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194
14.3.1 Rule Checklist
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194
14.3.2 Security Ramifications
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194
14.3.3 Key Fields For Configuring Rules
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195
14.3.3.1 Action
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195
14.3.3.2 Service
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195
14.3.3.3 Source Address
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195
14.3.3.4 Destination Address
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195
14.4 Connection Direction
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195
14.4.1 LAN to WAN Rules
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196
14.4.2 Alerts
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196
14.5 General Firewall Policy
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196
14.6 Firewall Rules Summary
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197
14.6.1 Configuring Firewall Rules
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199
14.6.2 Customized Services
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202
14.6.3 Configuring A Customized Service
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202
14.7 Example Firewall Rule
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203
14.8 DoS Thresholds
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207
14.8.1 Threshold Values
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207
14.8.2 Half-Open Sessions
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208
14.8.2.1 TCP Maximum Incomplete and Blocking Time
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208
14.8.3 Configuring Firewall Thresholds
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209
Chapter 15
Content Filtering
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211
15.1 Content Filtering Overview
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211
15.2 Configuring Keyword Blocking
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211
15.3 Configuring the Schedule
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212
15.4 Configuring Trusted Computers
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213
Chapter 16
Introduction to IPSec
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215
16.1 VPN Overview
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215