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"By Joel Snyder Network World | Nov 9, 2015 3:06 AM PT RELATED TOPICS Open Source Subnet Network Management System Management Comments In most big security breaches, there's a familiar thread: something funny was going on, but no one noticed. The information was in the logs, but no one was looking for it. Logs from the hundreds or thousands of network devices are the secret sauce to problem solving, security alerting, and performance and capacity management. Gathering logs together, analyzing them, "

[... "Graylog is an open-source log management tool, complete with a three-tier architecture, super-scalable storage (based on Elasticsearch), an easy-to-use web interface, and a powerful toolkit to parse messages, build ad-hoc dashboards, and set alerts on logs. ...]

"ctop is a new command line based tool available to monitor the processes at the container level. Containers provide operating system level virtualization environment by making use of the cgroups resource management functionality. This tool collects data related to memory, cpu, block IO and metadata like owner, uptime etc from cgroups and presents it in a user readable format so that one can quickly asses the overall health of the system. Based on the data collected, it tries to guess the underlying container technology. ctop is useful in detecting who is using large amounts of memory under low memory situations."

"ctop is a new command line based tool available to monitor the processes at the container level. Containers provide operating system level virtualization environment by making use of the cgroups resource management functionality. This tool collects data related to memory, cpu, block IO and metadata like owner, uptime etc from cgroups and presents it in a user readable format so that one can quickly asses the overall health of the system. Based on the data collected, it tries to guess the underlying container technology. ctop is useful in detecting who is using large amounts of memory under low memory situations."

"No system is complete without some form of security. There must be a mechanism available to protect files from unauthorized viewing or modification. The Linux system follows the Unix method of file permissions, allowing individual users and groups access to files based on a set of security settings for each file and directory. In this Classroom we will discusses linux security via /etc/passwd & /etc/shadow file and how to manage user's Accounts"

"Understanding Linux Security : /etc/passwd & /etc/shadow file No system is complete without some form of security. There must be a mechanism available to protect files from unauthorized viewing or modification. The Linux system follows the Unix method of file permissions, allowing individual users and groups access to files based on a set of security settings for each file and directory. In this Classroom we will discusses linux security via /etc/passwd & /etc/shadow file and how to manage user's Accounts"

"January 14, 2016 Joe Collins 0 Comment How To There is one application that I simply must have on every Linux system I install and that's htop. It doesn't matter whether it's a virtual machine or installed on hardware. It doesn't matter what distribution it is or whether the system is running a GUI Desktop Environment or not, I gotta have htop. It has become such an integral part of "

"January 14, 2016 Joe Collins 0 Comment How To There is one application that I simply must have on every Linux system I install and that's htop. It doesn't matter whether it's a virtual machine or installed on hardware. It doesn't matter what distribution it is or whether the system is running a GUI Desktop Environment or not, I gotta have htop. It has become such an integral part of "

"I'm sitting on 1TB of Google Drive storage and have 40GB going unused on OneDrive. And yet it's Dropbox, with my massive 2.5GB allowance, that I rely on daily. Why? Because it's cross-platform, a reason that will only strengthen my love of it when it (along with other cloud storage providers) gains native Chrome OS file manager support next year."

"Welcome to the FirewallD project homepage! FirewallD provides a dynamically managed firewall with support for network/firewall zones to define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings and for ethernet bridges and has a separation of runtime and permanent configuration options. It also supports an interface for services or applications to add firewall rules directly."