Free Ping is a software test tool for maintaining and debugging network problems on a local area network (LAN)
　　You can:
　　*Ping a single IP address.
　　*Ping a subnet to give an overview for 255 IP addresses.
　　*Traceroute to determine the route taken by packets across an IP network.
　　*Netbios lookup to search for devices using the SMB protocol.
　　*Bonjour lookup search for Apple devices on a LAN.
　　*Net status see the device IP address.
　　*Device list build a list of devices on the LAN.