P-2302HW/HWL-P1 Series User’s Guide

13.4.2 PSTN Phone To VoIP Phone ................................................................

175

13.4.3 PSTN Phone To PSTN Phone via VoIP ................................................

176

13.5

Trunking General Screen ...............................................................................

176

13.6

Trunking Peer Call Screen .............................................................................

177

13.7

Trunking Call Rule Screen .............................................................................

179

13.8

VoIP Trunking Example: VoIP to PSTN ..........................................................

181

13.8.1 Background Information ........................................................................

181

13.8.2 Configuration Details: Outgoing ............................................................

181

13.8.3 Configuration Details: Incoming ............................................................

182

13.8.4 Call Progression ...................................................................................

183

13.9

VoIP Trunking Example: PSTN to PSTN via VoIP .........................................

184

13.9.1 Background Information ........................................................................

184

13.9.2 Configuration Details: Outgoing ............................................................

184

13.9.3 Configuration Details: Incoming ............................................................

186

13.9.4 Call Progression ...................................................................................

187

Chapter 14

 

 

Firewall..................................................................................................................

189

14.1

Firewall Overview ..........................................................................................

189

14.1.1 Stateful Inspection Firewall ...................................................................

189

14.1.2 About the ZyXEL Device Firewall .........................................................

189

14.1.3 Guidelines For Enhancing Security With Your Firewall ........................

190

14.1.4 The Firewall, NAT and Remote Management .......................................

190

 

14.1.4.1 LAN-to-WAN rules .......................................................................

190

 

14.1.4.2 WAN-to-LAN rules .......................................................................

191

14.2

Triangle Route ................................................................................................

191

14.2.1 The “Triangle Route” Problem ..............................................................

192

14.2.2 Solving the “Triangle Route” Problem ...................................................

192

14.3

Firewall Screens .............................................................................................

193

14.3.1 General Firewall Screen .......................................................................

193

14.3.2 Firewall Services Screen .......................................................................

194

Chapter 15

 

 

Content Filter........................................................................................................

197

15.1

Content Filtering Overview ............................................................................

197

15.2

Content Filtering Screens ...............................................................................

197

15.2.1 Content Filter Screen ............................................................................

197

15.2.2 Content Filter Schedule Screen.............................................................

199

Chapter 16

 

 

Static Route ..........................................................................................................

201

16.1

Static Route Overview ....................................................................................

201

16.2

Static Route Screens ......................................................................................

201

20

Table of Contents