Question : Free PING Utility

Hi,

Does anyone now of a IP monitor software with email alert functionality (such as WhatsUp) for at least 100 nodes that is freeware, or really low cost?

Simple ping tool, if a node does not answer - send an alert email.

Thanks,
joe

Answer : Free PING Utility

Big Sister:
http://bigsister.graeff.com/

Nagios:
http://www.nagios.com/

Big Brother
http://www.bb4.org/