Matthew Macdonald-Wallace wrote: > Hi All, > > Before I start coding my own plugin to do this, does anyone know of a > plugin that monitors the number of external connection attempts over a > given period of time for a given service and sends alerts accordingly? > > I've noticed on a number of servers that we maintain recently that > there are unauthorised attempts to connect via SSH/FTP. These appear > in the log files about 2 seconds apart and are obviously automated.
Better than checking for this is to block them with iptables. Take a look at http://denyhosts.sourceforge.net/ which we use on our outward facing servers. It comes with notification via email as a bonus. As others have mentioned even reporting this abuse to the owners/ISPs is pretty useless. Bob -- Bob Amen O'Reilly Media, Inc. http://www.ora.com/ http://www.oreilly.com/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null