User`s manual
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10.3. QVM VPN Function Setup ................................................................................................................ 159
XI. Advanced Function .............................................................................................................................. 164
11.1 DMZ Host/ Port Range Forwarding ................................................................................................ 164
11.2 UPnP ......................................................................................................................................................... 168
11.3 Routing .................................................................................................................................................... 170
11.4 One to One NAT .................................................................................................................................... 174
11.5 DDNS- Dynamic Domain Name Service ...................................................................................... 178
11.6 MAC Clone .............................................................................................................................................. 181
11.7 Inbound Load Balance ....................................................................................................................... 182
XII. System Tool.......................................................................................................................................... 191
12.1 Diagnostic ............................................................................................................................................... 191
12.2 Firmware Upgrade ............................................................................................................................... 193
12.3 Setting Backup...................................................................................................................................... 194
12.4 SNMP ........................................................................................................................................................ 195
13.5 System Recover .................................................................................................................................... 197
13.6 High Availability .................................................................................................................................... 199
13.7 License Key ............................................................................................................................................ 204
XIII. Log ...................................................................................................................................................... 206
13.1 System Log ............................................................................................................................................ 206
13.2 System Statistic ................................................................................................................................... 212
13.3 Traffic Statistic ...................................................................................................................................... 213
13.4 Connection Statistic (Future) .......................................................................................................... 216
13.5 IP/ Port Statistic ................................................................................................................................... 218
13.6 QRTG (Qno Router Traffic Grapher) .............................................................................................. 220
XIV. Log out ................................................................................................................................................ 225
Appendix I: User Interface and User Manual Chapter Cross Reference .............................................. 226
Appendix II: Troubleshooting ................................................................................................................... 230
（1） Shock Wave and Worm Virus Prevention.................................................................................. 230
（2） Block QQLive Video Broadcast Setting ...................................................................................... 232
（3） ARP Virus Attack Prevention .......................................................................................................... 234
Appendix III: Qno Technical Support Information .............................................................................. 243