proxychains | TCP connection made by any given application | Proxy library

I'm trying to install package in julia 1.4.2 but it always returns this:

I'm trying to build a linux docker container with xrdp service installed so that I can remotely access the RDP service over not only the localhost interface but also the host network eth0 ip interface. I'm failing at understanding what I'm missing here with docker networking and properly launching the container. Docker running on Ubuntu Linux 20.04. As a test, when I run this docker command:

docker run --rm -d --network host --name my_nginx nginx

I observer that nginx is listening on port 80 and exposed on the localhost interface and I can access it with a browser. Verifying with:

sudo netstat -tulpn | grep 80

Now here is the linux container I'm trying to build and launch. I use a Dockerfile to launch an xrdp service.

I need to integrate several web applications on-premise and off-site under a common internally hosted URL. The on-premise applications are in the same data center as the haproxy, but the off-site applications can only be reached via a http proxy because the server on which haproxy is running has no direct Internet access. Therefore I have to use a http Internet proxy, SOCKS might be an option too.

How can I tell haproxy that a backend can only be reached via proxy ? I would rather not use an additional component like socksify / proxifier / proxychains / tsocks / ... because this introduces additional overhead.

This picture shows the components involved in the setup:

When I run this on a machine with direct Internet connection I can use this config and it works just fine:

If we have a following situation:

[laptop] ---- [host1] ---- [host2] ----[target]

where host1 is reachable from the my laptop machine, host2 from host1 and the target from host2 only. We have ssh credentials to both host1 and host2.

We can use the dynamic port forwarding with the following command:

ssh -N -D 127.0.0.1:8282 host1_account@host1

and that will basically create a SOCKS4 that we can use with proxychains so that command will work from the kali device:

proxychains ssh host2_account@host2

How we can make a similar (additional?) dynamic tunnel from host2 to target?

I am running the following command from docker within an ubuntu virtualbox and getting a connection refused error.

I am behind a corporate proxy and have configured my environmental vairables to use the proxy and username and password. I also tried using a proxychain.

I can access self-hosted Git repository by browser. However, git push on command line throws this error:

Env: rebar 3.6.0 on Erlang/OTP 21 Erts 10.0 Ubuntu 16.04
When I try to install the rebar3 pulgins (such as rebar3_hex), it reports:

===> Package <<"rebar3_hex">> not found. Fetching registry updates and trying again... ===> Updating package registry... ===> Plugin rebar3_hex not available. It will not be used.

There is only one line in my ~/.config/rebar3/rebar.config: {plugins, [rebar3_hex]}.
as recommended in https://www.rebar3.org/docs/using-available-plugins#hex-package-management and https://github.com/tsloughter/rebar3_hex.

I can't get more useful information from google, rebar3 doc and existed question here.

So, I open a new question to ask Why and How to resolve it.

ps: I use proxychains for rebar3, it reports |DNS-response| repo.hex.pm is 151.101.54.2
inet_gethost[10708]: WARNING:Malformed reply (header) from worker process 10709.

Suppose I set up Firefox or proxychains to connect to Tor network using SOCKS proxy on e.g. port 9050.

Now, will DNS requests be resolved using the Tor network?

I know that Tor works with TCP traffic, but how does it handle UDP packets?

I’m uncertain whether DNS request will stay anonymous, since I’ve read that e.g. torrent clients doesn’t work well with Tor by virtue of various UDP protocols?

I installed Sublime Text 3. I installed Package Control, R-Box, SendText, SendCode, sublimeREPL, and 1337 Color Scheme. To test that REPL R is working I ran the code: