... Interface*SIM card slot*1LAN Inteface*Ethernet×4WLAN*MAC Address Filtering , WEP,WPA,IEEE 802.1×*10,25,50,100Mw@22MHzz ... /Sever/Relay,DNS Proxy,DDNSSECURITY FUNCTIONS*Stateful Packet Inspection , Packet filtering , Denial of Service protection , Management Authentication protocols*PAP , CHAPVPN*PPTP ...