Linux

As Linux administrators we have become used to the proliferation of SUID bits that we set on our systems. As long as the list of programs that have these permissions set does not change, then…

As we continue our series look at the LPIC-2 303 exam from the LPI and Linux Security we now turn our attention to packet captures. Although not specifically mentioned in the objective for Network Hardening…

How can I discover all hosts on my network? How can a hacker discover all hosts on your network ? Two very different questions from the view point of appropriate network use but the same…

To make our start we shall take a look at the Linux Audit System on CentOS 7. This main component of Linux auditing is the auditd and this should be running. The service and the…

As we continue are study into Linux Security and the LPIC-3 303 exam we now take a look at controlling the amount of resources that we make available to our users. We all know that…

As we work our way through the objectives for the LPIC-3 303 exam we now look at securing the boot process with GRUB Passwords. The GRUB bootloader allows us the edit the boot process and…