Using apt behind a proxy…

just had to configure it…. Add:

Acquire::http::proxy "http://user:pass@1.2.3.4:8080";

to your /etc/apt/apt.conf. If no username and password needed just remove that options. Replace IP (1.2.3.4) and port (8080) with your configuration. Do an

aptitude update

afterwards to check if it works ;-)