Security

Generating keys and signing or verifying data.

IT operations folks strive to not only maximize uptime but also keep systems patched. These might seem like competing goals, but we’re here to help with Live kernel patching in Red Hat Enterprise…

Generating key pairs and choosing a good algorithm.

setuid, setgid, and the sticky bit, and why they matter.

RHEL Presents 38 on the RHEL 9 release.

Registering systems and reading advisor recommendations.

RHEL Presents 36 on LUKS disk encryption and NBDE.

Capturing terminal sessions with tlog and SSSD.

How SELinux handles ports and network access.

Applying updates with dnf and understanding what changed.

SELinux on RHEL without the fear: enforcing vs permissive vs disabled, how contexts and booleans work, and how to read a denial and fix it the right way.

Zones, services, and ports in firewall-cmd.