squid-proxy

This is an automatic script to install Squid-proxy with basic authentication for Linux Ubuntu. This script is already tested and working in Linux Ubuntu 16.04 LTS & 18.04 LTS.

Installation

1. Download or clone this repo.

   git clone https://github.com/dnwandana/squid-proxy.git
   cd squid-proxy

2. Make the file install-squid.sh is executable.

   sudo chmod +x install-squid.sh

3. Execute install-squid.sh

   sudo ./install-squid.sh

Installation note

• You'll be prompted for first user to use the proxy-server. You can leave it blank (add user later).

• To add another user you can type :

  sudo htpasswd /etc/squid/passwd username

  ^ Change username to your preferred username.

Verify the Squid service status

• To verify if the squid service is running, you can type :

  sudo systemctl status squid

  You should see the active (running) status like this.

  Loaded: .....
  Active: active (running) since DATE; TIME ago
  Docs: ....

• or you can check running Squid proxy port using following command :

  sudo netstat -ntlp

  By default, Squid runs on port 3128. You should see the result like this.

  Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
  tcp6       0      0 :::3128                 :::*                    LISTEN      14768/(squid-1)

Test Squid proxy

We're gonna test Squid proxy authentication using curl. You can use the following syntax :

curl -x [SQUID_SERVER_IP]:[SQUID_PORT] --proxy-user [USERNAME]:[USER_PASSWORD] -I [SITE]

For Example :

curl -x 192.168.0.100:3128 --proxy-user testuser:P@ssw0rd -I https://google.com/

You'll see the following results :

• Success

  HTTP/1.1 200 Connection established

• Authentication Error

  HTTP/1.1 407 Proxy Authentication Required
  .....
  .....
  Received HTTP code 407 from proxy after CONNECT

  That's it now you're ready to go to use Squid proxy for any reason!

Reference

• Squid Example Config
• curl Tutorial