ZyXEL Communications 200 Series User Manual page 18

Table of Contents
17.1.2 What You Need to Know About HTTP Redirect ..................................................... 322
17.2 The HTTP Redirect Screen ............................................................................................. 322
17.2.1 The HTTP Redirect Edit Screen ............................................................................. 323
Chapter 18
ALG ........................................................................................................................................ 325
18.1 ALG Overview ................................................................................................................. 325
18.1.1 What You Can Do in the ALG Screen .................................................................... 325
18.1.2 What You Need to Know About ALG ..................................................................... 326
18.1.3 Before You Begin ................................................................................................... 328
18.2 The ALG Screen .............................................................................................................. 328
18.3 ALG Technical Reference ................................................................................................ 330
Part III: Firewall .................................................................................... 333
Chapter 19
Firewall................................................................................................................................. 335
19.1 Overview .......................................................................................................................... 335
19.1.1 What You Can Do in the Firewall Screens ............................................................. 335
19.1.2 What You Need to Know About the Firewall .......................................................... 336
19.1.3 Firewall Rule Example Applications ....................................................................... 338
19.1.4 Firewall Rule Configuration Example ..................................................................... 340
19.2 The Firewall Screen ......................................................................................................... 343
19.2.1 Configuring the Firewall Screen ............................................................................. 343
19.2.2 The Firewall Edit Screen ........................................................................................ 346
Part IV: VPN .......................................................................................... 349
Chapter 20
IPSec VPN.............................................................................................................................. 351
20.1 IPSec VPN Overview ....................................................................................................... 351
20.1.1 What You Can Do in the IPSec VPN Screens ........................................................ 351
20.1.2 What You Need to Know About IPSec VPN ........................................................... 352
20.1.3 Before You Begin ................................................................................................... 352
20.2 The VPN Connection Screen .......................................................................................... 353
20.2.1 The VPN Connection Add/Edit (IKE) Screen ......................................................... 355
20.2.2 The VPN Connection Add/Edit Manual Key Screen .............................................. 360
20.3 The VPN Gateway Screen .............................................................................................. 363
20.3.1 The VPN Gateway Add/Edit Screen ...................................................................... 364
20.4 The VPN Concentrator Screen ........................................................................................ 369
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ZyWALL USG 100/200 Series User's Guide