ZyXEL Communications USG40 User Manual page 15

Chapter 33
System ...............................................................................................................................................606
33.1 Overview .......................................................................................................................................606
33.1.1 What You Can Do in this Chapter ........................................................................................606
33.2 Host Name ....................................................................................................................................607
33.3 USB Storage .................................................................................................................................607
33.4 Date and Time ...............................................................................................................................608
33.4.1 Pre-defined NTP Time Servers List ..................................................................................... 611
33.4.2 Time Server Synchronization ............................................................................................... 611
33.5 Console Port Speed ......................................................................................................................612
33.6 DNS Overview ...............................................................................................................................613
33.6.1 DNS Server Address Assignment .......................................................................................613
33.6.2 Configuring the DNS Screen ...............................................................................................613
33.6.3 Address Record ..................................................................................................................616
33.6.4 PTR Record .........................................................................................................................617
33.6.5 Adding an Address/PTR Record .........................................................................................617
33.6.6 CNAME Record ...................................................................................................................617
33.6.7 Adding a CNAME Record ....................................................................................................618
33.6.8 Domain Zone Forwarder .....................................................................................................618
33.6.9 Adding a Domain Zone Forwarder ......................................................................................618
33.6.10 MX Record ........................................................................................................................619
33.6.11 Adding a MX Record ..........................................................................................................620
33.6.12 Adding a DNS Service Control Rule ..................................................................................620
33.7 WWW Overview ............................................................................................................................621
33.7.1 Service Access Limitations ..................................................................................................621
33.7.2 System Timeout ...................................................................................................................621
33.7.3 HTTPS .................................................................................................................................622
33.7.4 Configuring WWW Service Control .....................................................................................623
33.7.5 Service Control Rules ..........................................................................................................625
33.7.6 Customizing the WWW Login Page ....................................................................................626
33.7.7 HTTPS Example ..................................................................................................................630
33.8 SSH ............................................................................................................................................637
33.8.1 How SSH Works ..................................................................................................................638
33.8.2 SSH Implementation on the ZyWALL/USG .........................................................................639
33.8.3 Requirements for Using SSH ...............................................................................................639
33.8.4 Configuring SSH ..................................................................................................................639
33.8.5 Secure Telnet Using SSH Examples ...................................................................................640
33.9 Telnet ............................................................................................................................................641
33.9.1 Configuring Telnet ................................................................................................................641
33.10 FTP ............................................................................................................................................643
33.10.1 Configuring FTP ................................................................................................................643
33.11 SNMP .........................................................................................................................................644
33.11.1 Supported MIBs .................................................................................................................645
ZyWALL/USG Series User's Guide
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