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November 28, 2022
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How to setup 3proxy on Ubuntu 20.04

Networks

What is 3proxy and why it could be needed

Usually there are two reasons to use proxy:

  • Needs to hide real IP and improove anonimity;
  • To "bypass" restrictions and get access to the resource if it has geo-lock.

One of the simplest way to goal this aims is 3proxy service

Requirements

Before starting the setup you should ensure that you have:

  • Server which will work as "exit-node". No much powerful needs, 1 CPU core, 5-10Gb of drive space and 1Gb RAM is enough. High speed connection and unmetered data-trafic are wishful;
  • Non-deprecated OS (Ubuntu 20.04 e.g.);
  • Privileged access to this server.

Install and setup

Setup is very simple. Just open SSH-session on the server and run one-line command:

wget https://github.com/z3APA3A/3proxy/releases/download/0.9.3/3proxy-0.9.3.x86_64.deb; dpkg -i 3proxy-0.9.3.x86_64.deb

pic1

To configure service you should edit app settings file. Let's go to setup SOCKS5-proxy, command below will add some necessary directives:

cat <<EOF > /etc/3proxy/3proxy.cfg
nscache 65536
nserver <preferred_DNS-server>
config /conf/3proxy.cfg
monitor /conf/3proxy.cfg
log /logs/3proxy-%y%m%d.log D
rotate 60
counter /count/3proxy.3cf
users $/conf/passwd  # proxy accounts stores in this file
include /conf/counters
include /conf/bandlimiters
auth strong
deny * * 127.0.0.1
allow * * * 80 HTTP
allow * * * 443 HTTPS
socks -n -p<listening_port> -a
flush
allow
maxconn <max_simultaneous_connections>
EOF

pic2

Allow service port in the firewall:

ufw allow <listening_port>

pic3

Start the service and check it's status:

systemctl enable 3proxy && service 3proxy start && netstat -tlpn | grep prox

pic4

Then time to add proxy users. Run package mantainer's script to do this:

/etc/3proxy/conf/add3proxyuser.sh <proxylogin> <proxypassword> <daily_trafic_limit_in_MBs> <network_speed_limit_in_bits_per_second>

Last two parameters is optional, no restrictions if undefined.

pic5

Restart the service

systemctl restart 3proxy

Result checking

The simplest way to ensure proxy is real working is CLI-request. Just run on your computer:

curl -I -x socks5://<proxyuser>:<proxypassword>@<server_IP>:<proxy_port> https://serverspace.ru | grep HTTP

pic6

Gained "code 200" means proxy is working well. So, you may use it in your browser or other software client.

Conclusion

In this article I explained why you may be needed to have your own proxy and how to setup it in a few minutes on Ubuntu 20.04 LTS

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