6 
Firewall 
The powerful built-in firewall effectively protects against viruses and malicious attacks.   
ARP Attack Protection 
You can bundle an IP address and MAC address bi-directionally, which effectively protects your 
LAN from Address Resolution Protocol (ARP) attacks.   
Parental Controls 
Parents can control their children's computer usage by placing time limits on usage duration or 
forbidding access to certain websites. 
Energy-saving 
Automatic switch to energy-saving state when no service is detected, Wi-Fi function enabled 
and disabled as scheduled. 
Ports and Buttons 
 
No.  Item  Description 
1  Power  Connects to a power adapter. 
2  WAN  Connects to an Ethernet device that provides Internet access, 
such as a modem or switch. 
3 
LAN1~LAN4 
Connects to Ethernet devices, such as computers, set-top boxes 
(STBs), and switches. 
4  WPS/Reset      WPS button: Press the WPS button to start Wi-Fi protected 
setup (WPS) negotiation while the WS319 is powered on. 
  Reset button: Press Reset button (more than 6 seconds) to 
restore to its default settings while the WS319 is powered 
on. 
 A reset will result in all custom data and settings being lost. Use 
with caution.