4.2 WAN Service ........................................................................................................................................................... 25
4.3 VPN ......................................................................................................................................................................... 38
4.3.1 L2TP Client ....................................................................................................................................................... 38
4.3.2 PPTP Client....................................................................................................................................................... 41
4.4 3G/4G Dial .............................................................................................................................................................. 45
4.5 LAN ......................................................................................................................................................................... 46
4.5.1 IPv4 .................................................................................................................................................................. 46
4.5.2 IPv6 .................................................................................................................................................................. 49
4.6 NAT ......................................................................................................................................................................... 51
4.6.1 Virtual Server ................................................................................................................................................... 51
4.6.2 Port Triggering ................................................................................................................................................. 53
4.6.3 DMZ Host ......................................................................................................................................................... 54
4.6.4 Multi-NAT ........................................................................................................................................................ 56
4.6.5 UPnP ................................................................................................................................................................ 57
4.7 Security ................................................................................................................................................................... 58
4.7.1 Dos Defence ..................................................................................................................................................... 58
4.7.2 IP Filtering ........................................................................................................................................................ 59
4.7.3 MAC Filtering ................................................................................................................................................... 61
4.8 Parental Control ...................................................................................................................................................... 63
4.8.1 Time Restriction ............................................................................................................................................... 63
4.8.2 URL Filter ......................................................................................................................................................... 64
4.9 ALG .......................................................................................................................................................................... 65
4.10 Bandwidth Conrtol ................................................................................................................................................ 65
4.11 Quality of Service .................................................................................................................................................. 66
4.11.1 QoS Queue .................................................................................................................................................... 67
4.11.2 QoS Classification .......................................................................................................................................... 68
4.12 Routing ................................................................................................................................................................. 70
4.12.1 Defauly Gateway ............................................................................................................................................ 70
4.12.2 Static Route ................................................................................................................................................... 70
4.12.3 RIP .................................................................................................................................................................. 72
4.13 DNS ....................................................................................................................................................................... 73
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