Table of Contents

20.1

DNS Overview ...............................................................................................................

365

20.2

DNS Server Address Assignment ...................................................................................

365

20.3

DNS Servers ....................................................................................................................

365

20.4

Address Record ...............................................................................................................

366

20.4.1 DNS Wildcard .........................................................................................................

366

20.5

Name Server Record .......................................................................................................

366

20.5.1 Private DNS Server ................................................................................................

366

20.6

System Screen ................................................................................................................

367

20.6.1 Adding an Address Record ..................................................................................

368

20.6.2 Inserting a Name Server Record ..........................................................................

369

20.7 DNS Cache ....................................................................................................................

371

20.8

Configure DNS Cache .....................................................................................................

371

20.9

Configuring DNS DHCP ................................................................................................

372

20.10 Dynamic DNS ..............................................................................................................

374

20.10.1 DYNDNS Wildcard ...............................................................................................

374

20.11 Configuring Dynamic DNS .............................................................................................

374

Chapter 21

 

Remote Management............................................................................................................

377

21.1

Remote Management Overview ......................................................................................

377

21.1.1 Remote Management Limitations ..........................................................................

378

21.1.2 System Timeout .....................................................................................................

378

21.2 WWW (HTTP and HTTPS) .............................................................................................

378

21.3

WWW Configuration ........................................................................................................

379

21.4 HTTPS Example ..............................................................................................................

380

21.4.1 Internet Explorer Warning Messages .....................................................................

381

21.4.2 Netscape Navigator Warning Messages ................................................................

381

21.4.3 Avoiding the Browser Warning Messages ..............................................................

382

21.4.4 Login Screen ..........................................................................................................

383

21.5

SSH ..............................................................................................................................

385

21.6 How SSH Works ..............................................................................................................

385

21.7

SSH Implementation on the ZyWALL ..............................................................................

386

21.7.1 Requirements for Using SSH .................................................................................

386

21.8

Configuring SSH ..............................................................................................................

386

21.9

Secure Telnet Using SSH Examples ...............................................................................

387

21.9.1 Example 1: Microsoft Windows ..............................................................................

387

21.9.2 Example 2: Linux ....................................................................................................

388

21.10 Secure FTP Using SSH Example ..................................................................................

389

21.11 Telnet ...........................................................................................................................

390

21.12 Configuring TELNET .....................................................................................................

390

21.13 FTP ..............................................................................................................................

391

21.14 SNMP ..........................................................................................................................

392

21.14.1 Supported MIBs ...................................................................................................

393

ZyWALL 2 Plus User’s Guide

17