ZyXEL Communications USG40 User Manual page 10

Chapter 12
DDNS................................................................................................................................................382
12.1 DDNS Overview ............................................................................................................................382
12.1.1 What You Can Do in this Chapter ........................................................................................382
12.1.2 What You Need to Know ......................................................................................................382
12.2 The DDNS Screen ........................................................................................................................383
12.2.1 The Dynamic DNS Add/Edit Screen ....................................................................................384
Chapter 13
NAT.....................................................................................................................................................388
13.1 NAT Overview ...............................................................................................................................388
13.1.1 What You Can Do in this Chapter ........................................................................................388
13.1.2 What You Need to Know ......................................................................................................388
13.2 The NAT Screen ............................................................................................................................388
13.2.1 The NAT Add/Edit Screen ....................................................................................................390
13.3 NAT Technical Reference ..............................................................................................................393
Chapter 14
Redirect Service................................................................................................................................395
14.1 Overview .......................................................................................................................................395
14.1.1 HTTP Redirect .....................................................................................................................395
14.1.2 SMTP Redirect ....................................................................................................................395
14.1.3 What You Can Do in this Chapter ........................................................................................396
14.1.4 What You Need to Know ......................................................................................................396
14.2 The Redirect Service Screen ........................................................................................................398
14.2.1 The Redirect Service Edit Screen .......................................................................................399
Chapter 15
ALG ....................................................................................................................................................401
15.1 ALG Overview ...............................................................................................................................401
15.1.1 What You Need to Know ......................................................................................................401
15.1.2 Before You Begin .................................................................................................................404
15.2 The ALG Screen ...........................................................................................................................404
15.3 ALG Technical Reference .............................................................................................................407
Chapter 16
UPnP ..................................................................................................................................................409
16.1 UPnP and NAT-PMP Overview .....................................................................................................409
16.2 What You Need to Know ...............................................................................................................409
16.2.1 NAT Traversal ......................................................................................................................409
16.2.2 Cautions with UPnP and NAT-PMP .....................................................................................410
16.3 UPnP Screen ................................................................................................................................410
16.4 Technical Reference ...................................................................................................................... 411
ZyWALL/USG Series User's Guide
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