Users use Google Translation to circumvent web filtering policy restricting access to YouTube

book

Article ID: 167085

calendar_today

Updated On:

Products

ProxySG Software - SGOS

Issue/Introduction

In an explicit deployment, YouTube access is restricted for all users by blocking  “youtube.com” (contains or exact match) with no SSL interception.
Users trying to access www.youtube.com from browsers are blocked; however, users can access the YouTube videos using the Google Translate website.

If a user enters the following URL in Google Translate:
http://www.youtube.com/watch?v=vgdsYAA9IW

Google Translate translates the URL to the selected language. As an example, if Spanish is selected, Google Translate generates:
https://translate.googleusercontent.com/translate_c?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com.au&sl=auto&tl=es&u=http://www.youtube.com/watch%3Fv%3DvgdsYAA9IW4&usg=ALkJrhjROF6bQA-59dk9Ay_GJQGa-hiQeQ
 

If the user clicks the new link, the browser loads intended YouTube clip.

Resolution

When users access youtube.com through Google Translate, the client machine does not make requests to youtube.com. Instead, it gets the video content directly from googlevideo.com.

Block googlevideo.com in your policies to prevent users from accessing YouTube videos from Google translate website.
Alternatively, you can block URL category Audio/Video Clips instead of just youtube.com (this is not applicable if the users are allowed to any Audio/Video Clips categories).