Linux on emPSN / LA

[nottsure]

Hello,

 

I wasn't sure if to post here or in the nix forum, but it seems to be a filtering issue.

 

I'm just wondering if anyone has any Linux boxes working on emPSN or the LA provided internet / filtering.

 

I've got a Ubuntu (18.04) box and two Raspberry Pi's (Screenly) which will update fine offsite but refuse to update on site. I've gone through whitelisting URLs but with no effect.

 

LA is unwilling to help as they don't support Linux; only Windows.

 

Any help or pointers would be gratefully received. TIA

[ADMaster]

Can you browse the internet, but not update, or no network connection at all?

I don't know what the Pi's run, but for apt has its own proxy config files.

Take a look at this.

https://www.serverlab.ca/tutorials/linux/administration-linux/how-to-set-the-proxy-for-apt-for-ubuntu-18-04/

 

I used to setup Acquire::http::Proxy when I used Apt-Cacher for multiple Ubuntu servers.

[nottsure]

Thank you for the link. Something to test on Monday.

 

I can get internet, and browse fine on all the boxes.

 

On the Ubuntu box I’m using the pac file supplied by the LA and on the PIs (Debian based) I’m not using a proxy at all.

 

We have a staff proxy and student proxy which changes the level of filtering. AFAIK the non proxy PIs will end up through the student filtering, but the Ubuntu box will go through the staff (very nearly unlimited) filtering.

Edited November 17, 2018 by nottsure

[ReBoot]

What happens if you do the following from a terminal ? (This just fetches the list of available updates so won't harm anything.) Is it hanging or can you see it downloading anything.

 

sudo apt-get update

[nottsure]

I can’t remember the exact message but each part came up with connection refused. Nothing to install.

[ReBoot]

Sounds like you need to manually enter the proxy configuration for apt as suggested by ADMaster. That should fix things.

 

I currently run Ubuntu servers behind LA proxies and have not experienced any issues getting updates.

[nottsure]

Thank you ReBoot, I’ll give that a try and report back.

[jinnantonnixx]

If you've got a proxy set up in your user environment, through exports or /etc/environment, you might have to pass the -E switch to sudo to preserve the environment (including proxy settings)

 

Try this

 

sudo -E apt-get update

 

and if it works, continue with this:

 

sudo -E apt-get upgrade

 

 

If that fails, test your proxy with a simple curl request.

 

curl www.microsoft.com

 

You should see a response like this:

 

Your current User-Agent string appears to be from an automated process, if this is incorrect, please click this link:United States English Microsoft Homepage

 

If you get an error response from your proxy, you've got a fundamental authentication problem.

Edited November 19, 2018 by jinnantonnixx