apt-get update failure

[Colin Law]

On 3 August 2014 06:19, feora <studyfordo at 163.com> wrote:
> HI, guys
>      os: Ubuntu 14.04.1 LTS
>     I can't install any software via apt-get. The following is details
>        Err http://archive.ubuntu.com/ubuntu/ trusty/universe iotop amd64
> 0.6-1
>   Could not connect to 58.247.178.239:8081 (58.247.178.239), connection
> timed out

What do you see if you run, in a terminal
ping archive.ubuntu.com

Also, have you set that ip as a proxy for apt-get?  See
https://help.ubuntu.com/community/AptGet/Howto#Setting_up_apt-get_to_use_a_http-proxy

Colin