[CentOS] Recommendation On Ping And Alert Tool

Hi all,

I haven't seen anybody mentioning Argus:
website: http://www.tcp4me.com
online demo: http://www.tcp4me.com/cgi-bin/argus?func=login&name=manager&passwd=xxx

It does exacly what was asked in the thread starter post (ping and alert with rate 
limits) and even more if needed (monitor services, or even webpages :) ). I use it 
for over a year now, and am very happy with it.

Hope it helps,
Alex