Features | Can expand 24 WAN ports ADSL line redial Multi-line overlay Anti-operator detection ARP and DDoS attack defense Application traffic offloading Application flow control Application priority guarantee Multi-line load balancing VPN line and speed limit Internet cafe expert guide | Internet behavior management Intelligent flow control WEB authentication Network notice Decentralized group management Firewall Email monitoring Chat software management Website and keyword filtering DDNS dynamic domain name Port Mapping VPN(IPSEC, PPTP, L2TP) | PPPOE and WEB certification and billing Certification and Accounting Notice User surfing time and flow control Home pop-up control Any IP mode Multi-segment isolation management Website black and white list Sensitive word filtering |