Linux Systemd Cgroups: Freezer Subsystem Modern Linux systems use systemd to manage services and resources. The resource management portion of systemd is called cgroups. Cgroups can be used to monitor and limit the resources that processes use, permissions, and Linux capabilities available to them. A lesser known sub-component of cgroups is the freezer subsystem. The
Networking Networking: Ethernet Frames What is Ethernet? This is a question that cybersecurity professionals should be able to answer. It is the basic building block of network models and how packets start to transit from Host A to Host B. This post will discuss some of the characteristics of Ethernet frames in general. To
Linux Red Team: Packet Captures and BPF Filtering One of the primary goals during a red team engagement is to enumerate the internal network once the initial foothold is established. Internal network enumeration is critical to expanding access, lateral movement, and identifying the key network resources in use. There are both active and passive methods to complete this
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