CompTIA · Linux+ XK0-006
Security issues
Linux+ XK0-006 · Lesson 28 of 28 · 3:54:18
YouTube loads only after you press play. This chapter opens at its timestamp in the full course. Watch on YouTube ↗
In this lesson
Prepare for the Linux+ XK0-006 exam (CompTIA Linux+ V8). In this lesson: SELinux denials, permission and attribute problems, locked or expired accounts, SSH access issues, unpatched systems and exposed services, repository errors, and certificate and cipher negotiation problems, with Pinecrest Media, a fictional video streaming company, as the running example. Includes three original practice questions.
Preview the topics
- New posters, uploaded to a home directory, then moved with mv to the posters directory of the catalog, return access denied. Their mode is 644, and the audit log shows a denial. What should the admin run?
- An editor gets Permission denied (publickey) on web01, after copying a correct key. On the server, the editor’s .ssh directory has mode 777. What should be fixed?
- Some clients report the catalog certificate as untrusted. openssl s_client shows unable to get local issuer certificate, while the certificate is valid and its name matches. What is missing?