I want feature to add other HTML pages/application within Redmine application and run from the same server. Currently i have moved the application inside "Public" folder in Redmine app. So that i am ableed to access the same as

"http://redmine_app_link/my_application"
"http://redmine_app_link/my_application/page1"
"http://redmine_app_link/my_application/page2" etc

But this application opens without authentication from Redmine. If I just point to the path it opens without Authentication.

Is there any possibilities to integrate Redmine Authentication to open these web html page in this folder. Or any mechanism/folder where i can move my html app and link inside redmine. Please suggest how to go ahead.

My environment details are as follows
Environment:
Redmine version 3.4.6.stable
Ruby version 2.3.3-p222 (2016-11-21) [i386-mingw32]
Rails version 4.2.8
Environment production
Database adapter Mysql2
SCM:
Subversion 1.10.2
Git 2.17.1

Redmine plugins:
no plugin installed