Introduction to the video and identification of the back button issue in web applications.

• The presenter, Ivan, welcomes viewers back to the channel and sets the context for the tutorial.
• The issue discussed is the ability to see a secure page after logging out and using the back button of the browser.
• Ivan compares this behavior to how Facebook correctly redirects to the login page after logging out.

Review of the existing code and initial changes to improve security and functionality.

• Ivan reviews the existing code in Eclipse and runs the application to demonstrate the issue live using Firefox.
• Changes are made to the login page to hide the password characters and to change the form submission to POST method for better security.
• The presenter also plans to replace a hyperlink with an embedded video in the application.

Implementing headers to instruct the browser not to cache secure pages to solve the back button issue.

• Ivan demonstrates how to set HTTP headers to prevent the browser from caching the secure pages after logout.
• Headers like 'Cache-Control', 'Pragma', and 'Expires' are set in both the Welcome and Videos JSP pages to manage caching behavior.
• After making these changes and restarting the server, the logout functionality is tested to confirm that the back button no longer shows the cached secure page.

Explaining session management in web applications and summarizing the tutorial.

• Ivan discusses the use of session objects and reassures that they are specific to each browser instance, ensuring individual user sessions are managed securely.
• The video concludes with a reminder to implement database-driven user authentication in future tutorials and a brief discussion on JavaScript validation.
• Ivan encourages the viewers to like and subscribe for more videos.