Box Monitor is a useful Network-Device-Monitor program with an intuitive interface.

This tool is able to check specified service-ports on remote network devices,like HTTP, SMTP, POP3, FTP, DNS, TELNET, VNC, ROUTERS, etc. Box Monitor is fast and rugged, will check upto 20 devices in 1 sweep and has alot of features thatmakes it friendly to use, like easy updating of server info, server-list print out,systray icon, E-mail notification if a monitored device fails, audio alert on device failure,execute external file on device failure, log device failures to txt file on HD, screen logof server problems, print logfile, time based autocheck, load on system startup,scheduled sleep-mode for preventing error messages during daily backup, reboot, etc.

use last known autocheck value and start scanning on program launch,and much much more.