As a service to our Linux-using customers we provide the following software repositories:
  1. Add the BitDefender repository key to the list of apt trusted keys: 
    wget http://download.bitdefender.com/repos/deb/bd.key.asc
apt-key add bd.key.asc
    NOTE that the second command must be run as root or by using sudo
  2. Add the following line to the /etc/apt/sources.list file:
    deb http://download.bitdefender.com/repos/deb/ bitdefender non-free
  3. Refresh your apt cache by running:
    apt-get update
    or
    aptitude update
  4. Install the desired BitDefender packages using your prefered apt front-end
    For example:
    apt-get install bitdefender-mail
The DEB repository is accessible here.
  1. Install the BitDefender-repo package: 
    rpm -i http://download.bitdefender.com/repos/rpm/bitdefender/i586/BitDefender-repo-1-1.noarch.rpm
  2. Update the yum cache: 
    yum update
  3. You can now install BitDefender packages using your prefered rpm front-end.
    For example:
    yum install BitDefender-mail
    NOTE that on the first install of a BitDefender package you must accept to trust the GPG key associated with the BitDefender packages
The RPM repository is accessible here.