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Monitorix is a free, open source, lightweight system monitoring tool designed to monitorize as many services as possible. At this time it monitors from the CPU load and temperatures to the users using the system. Network devices activity, network services demand and even the devices’ interrupt activity are also monitored, and more.
Some of you may know the commercial Flexnet Licencing Application. It's a client-server based solution for managing the usage of socalled Flexnet-enabled applications. You can hold licenses of more than one product on one license-server.
An excellent program for monitoring users and applications is psacct. This program will work in the background of your system recording what all users are doing on your system as well as the resources that are being consumed. I originally started using this program when a client asked for a way to monitor his developers and what they were doing on the servers that they were working on.
According to IDC, compliance drives investment priorities in 2011 while financial companies will grow their compliance investments up to 15-20% of their IT budgets.
BalaBit IT Security - “the syslog company” - is aiming this promising market with Shell Control Box, a Linux based activity monitoring appliance for privileged access.
What's happening on your web server that you do not know about? ModSecurity provides you insight into the activity on your web server that Apache is not designed to tell you about. ModSecurity Handbook by Ivan Ristic is a great read to start getting information about activity and then managing the access to your web server.
ZABBIX is an enterprise-class distributed monitoring solution designed to monitor and track performance and availability of network servers, devices, and other IT resources. It supports distributed and Web-based monitoring, auto-discovery, real-time monitoring, SLA assurance, trending, and more.
File Transfer Protocol (FTP) is a popular and time-honored method of transferring files to and from a remote network site. FTP is built on a client-server architecture and uses separate control and data connections between the client and server applications. The FTP client connects to the FTP server, and enables the user to send and retrieves files from that server.