![](//vs1.manuzoid.com/store/data-gzf/f8c0dd9f799adc4393d1537431301c3e/2/002167512.htmlex.zip/bg5.jpg)
3.4.1.4 Loopback .................................................................................................57
3.4.1.5 VLAN Trunk ............................................................................................. 57
3.4.2 Firewall ............................................................................................................... 58
3.4.2.1 Security ....................................................................................................58
3.4.2.2 ACL .......................................................................................................... 58
3.4.2.3 DMZ ......................................................................................................... 60
3.4.2.4 Port Mapping .......................................................................................... 60
3.4.2.5 MAC Binding ........................................................................................... 61
3.4.3 DHCP .................................................................................................................. 62
3.4.4 DDNS .................................................................................................................. 63
3.4.5 Link Failover .......................................................................................................64
3.4.5.1 SLA ...........................................................................................................64
3.4.5.2 Track ........................................................................................................65
3.4.5.3 WAN Failover .......................................................................................... 66
3.4.6 VPN .....................................................................................................................67
3.4.6.1 DMVPN .................................................................................................... 67
3.4.6.2 IPSec ........................................................................................................68
3.4.6.3 GRE .......................................................................................................... 71
3.4.6.4 L2TP ........................................................................................................ 72
3.4.6.5 PPTP ........................................................................................................74
3.4.6.6 OpenVPN Client ...................................................................................... 76
3.4.6.7 OpenVPN Server ..................................................................................... 77
3.4.6.8 Certifications ...........................................................................................79
3.5 System .......................................................................................................................... 81
3.5.1 General Settings ................................................................................................ 81
3.5.1.1 General .................................................................................................... 81
3.5.1.2 System Time ........................................................................................... 82
3.5.1.3 SMTP ....................................................................................................... 84
3.5.1.4 Phone .......................................................................................................84
3.5.1.5 Email ........................................................................................................ 85
3.5.2 User Management ............................................................................................. 86
3.5.2.1 Account ................................................................................................... 86
3.5.2.2 User Management .................................................................................. 86
3.5.3 SNMP ................................................................................................................. 87
3.5.3.1 SNMP .......................................................................................................87
3.5.3.2 MIB View ................................................................................................. 88
3.5.3.3 VACM .......................................................................................................88
3.5.3.4 Trap ..........................................................................................................89
3.5.3.5 MIB ...........................................................................................................90
3.5.4 Device Management ......................................................................................... 90
3.5.5 Events .................................................................................................................91
3.5.5.1 Events ...................................................................................................... 91
3.5.5.2 Events Settings ....................................................................................... 92
3.6 Maintenance .................................................................................................................94