sMonitor is a network monitoring software that allows you to verify the network connectivity of TCP/IP hosts on the Internet and LAN. The built-in NT service periodically pings, or checks TCP and UDP ports on network devices. If the destination host fails to reply to a ping, connection request, or user datagram, sMonitor alerts you using audible alarms, visible notifications, e-mail messages, third-party software, modem and telnet connections.