proxy authentication

Question

I am very new to ubuntu, I decided to try it out two days ago. I am using proxy server [172.31.100.15 with user name and password]. I cant access any on-line resources both with the terminal, transmission(to download torrents), or Ubuntu software center. For firefox, I have configured it and can download .deb and other files but need direct access. Please give me step by step instruction as to how to configure and authenticate 12.04 terminal. Thank you

Answer 1

Configure your proxy first by System Settings → Network → Network proxy. Put in 172.31.100.15 and your port there.

After that, open apt.conf

sudo gedit /etc/apt/apt.conf

You will see

Acquire::http::proxy "http://172.31.100.15:port/";
Acquire::https::proxy "https://172.31.100.15:port/";
Acquire::ftp::proxy "ftp://172.31.100.15:port/";
Acquire::socks::proxy "socks://172.31.100.15:port/";

Change it to

Acquire::http::proxy "http://username:password@172.31.100.15:port/";
Acquire::https::proxy "https://username:password@172.31.100.15:port/";
Acquire::ftp::proxy "ftp://username:password@172.31.100.15:port/";
Acquire::socks::proxy "socks://username:password@172.31.100.15:port/";