Fail2Ban is an intrusion detection and prevention tool for Linux operating system. It is written in Python language. It works by checking log files using regular expressions. Entries that match the regular expression are banned by adding the IP address to the system firewall.
ReadIn my earlier post titled, Graylog2 - A scalable open source centralized logging system, I had described my experience with installing and configuring Graylog2. In this post, I will describe my experience with using the search features of Graylog2.
ReadIn this blog post I will describe my experience with installing an open source centralized logging system called Graylog2. Graylog2 is an excellent log management system. It is based on well known open source tools such as Mongodb and Elasticsearch.
ReadRecently our Pfsense gateway server was consuming too much CPU. Especially during high network activity. This blog post describes my experience with trying to optimize Pfsense.
ReadServer monitoring is a useful task that is performed by server administrators. Server monitoring involves keeping a check on the various parts of a server such as its CPU, Memory, Hard Disk, Network Traffic, Services and more. Server monitoring can avoid problems that can disrupt services.
ReadCPU and Memory monitoring is an important system administration task. It provides valuable information that can be used in resource planning and alert notifications.
ReadThe RAM on a server can be monitored using /proc/meminfo and awk commands. /proc/ is a special file system created by the Linux kernel which contains kernel related information such as CPU and memory usage. /proc/meminfo contains information about memory usage.
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