Скачать или смотреть How to Restrict sqlnet.ora Edits to Root Only on Oracle Linux (Even from Sudo Users) - Part 1/3

In this video, we demonstrate a secure and hardened procedure to ensure that only the root user — and not even other sudo-enabled users — can modify the critical sqlnet.ora configuration file in Oracle Linux.

This method ensures the integrity of your Oracle networking configuration while allowing the Oracle database to function normally at runtime.
🔐 What You’ll Learn:

✔️ How to change ownership and permissions on sqlnet.ora
✔️ How to lock down the parent directory to prevent symlink attacks
✔️ How to make the file immutable (even against sudo)
✔️ How to verify the configuration as different users
✔️ How to optionally harden sudoers policy
✔️ Why this matters for production Oracle environments
🛡️ Commands Covered:

chown and chmod for file ownership and permission

chattr +i to make files immutable

Testing file access as oracle, as a sudoer, and as root

Editing /etc/sudoers securely with visudo

📌 Why This Matters

Tampering with sqlnet.ora can compromise Oracle network access and authentication behavior. This guide follows the principle of least privilege, ensuring that only root can modify configuration while Oracle continues to operate securely.
🌐 Connect With Us:

Website: https://iqbrain.co.tz/
LinkedIn: https://www.linkedin.com/company/103967726
Instagram: https://www.instagram.com/iqbrain_tz
Facebook: https://www.facebook.com/share/14DwH3NSbcF...
📞 Phone: +255 756 240 202