HiRO H50188 - Manual (Page 58)

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WLAN ADSL2+ Router
VLAN Group
Go to Advanced Setup -> VLAN-> Define VLAN Group to setup VLAN group features.
Firewall
Go to Advanced Setup ->Firewall to setup Firewall features. Select this option can
automatically detect and block Denial of Service (DoS) attacks, such as Ping of Death, SYN
Flood, Port Scan and Land Attack.