Only front page shown?
A possible reason can be missing .htaccess file in the drupal root directory or if it is present than possibly your web server is not able to read it. For example web server apache reads .htaccess file with help of mod_rewrite module or even if mod_rewrite module is installed on Apache , Apache server do not have Allow override all permissions. One of the way to check issue is related to .htaccess or not can be accessing internal pages with query parameter, for example www.yoursite.com?q=user and see if it works! then chances are issues with .htaccess file.just check you have shared the URL, for me reason looks like to be .htaccess file check your drupal install is having .htaccess file or not if so ask your web master to let your web server to read your .htacccess