8 Services ............................................................................................................................................................... 82
8.1 VRRP ............................................................................................................................................................ 82
8.1.1 VRRP LAN Configuration Settings ......................................................................................................... 82
8.1.2 Check Internet connection ................................................................................................................... 82
8.2 Web Filter .................................................................................................................................................... 83
8.2.1 Site blocking .......................................................................................................................................... 83
8.2.2 Proxy Based Content Blocker ............................................................................................................... 83
8.3 NTP .............................................................................................................................................................. 84
8.4 VPN .............................................................................................................................................................. 85
8.4.1 OpenVPN .............................................................................................................................................. 85
8.4.2 IPSec ..................................................................................................................................................... 89
8.4.3 GRE Tunnel ........................................................................................................................................... 92
8.4.4 PPTP ...................................................................................................................................................... 94
8.4.5 L2TP ...................................................................................................................................................... 96
8.5 Dynamic DNS ............................................................................................................................................... 97
8.6 SMS Utilities ................................................................................................................................................. 99
8.6.1 SMS Utilities .......................................................................................................................................... 99
8.6.2 Call Utilities ......................................................................................................................................... 107
8.6.3 User Groups ........................................................................................................................................ 108
8.6.4 SMS Management .............................................................................................................................. 109
8.6.5 Remote Configuration ........................................................................................................................ 111
8.6.6 Statistics .............................................................................................................................................. 114
8.7 SNMP ......................................................................................................................................................... 115
8.7.1 SNMP Settings .................................................................................................................................... 115
8.7.2 TRAP Settings ...................................................................................................................................... 116
8.8 SMS Gateway ............................................................................................................................................. 117
8.8.1 Post/Get Configuration....................................................................................................................... 117
8.8.2 Scheduled Messages........................................................................................................................... 119
8.8.3 Auto Reply Configuration ................................................................................................................... 119
8.8.4 SMPP ................................................................................................................................................... 120
8.9 Hotspot ...................................................................................................................................................... 121
8.9.1 General settings .................................................................................................................................. 121
8.9.2 Internet Access Restriction Settings ................................................................................................... 123
8.9.3 Logging ................................................................................................................................................ 123
8.9.4 Landing Page ....................................................................................................................................... 125
