Set Up Proxy on Amazon EC2 Ubuntu

1. Setting up the EC2 Instance

Launch an EC2 Instance

1. Choose an Ubuntu Server image.
2. Select an appropriate instance type.
3. Configure instance details, storage, and security group. Ensure your security group allows inbound traffic on the ports you plan to use for your proxy (typically port 3128 for Squid).
4. Review and launch the instance.
5. Create and download a key pair for SSH access. (optional, can connect through AWS console later)

2. Connect to Your Instance

• Use SSH client with the instance’s public DNS/IP and the key pair:

  ssh -i /path/to/your-key.pem ubuntu@your-instance-public-dns
  

• Or through AWS Session Manager

Installing and Configuring Squid

Install Squid

1. Update package lists: sudo apt-get update
2. Install Squid: sudo apt-get install squid apache2-utils

Configure Squid with Authentication

• Open the Squid configuration file: sudo nano /etc/squid/squid.conf
• Configure basic settings:

  • Set http_port to your desired port, typically 3128.

  • Add the following lines for basic authentication:

      auth_param basic program /usr/lib/squid/basic_ncsa_auth /etc/squid/passwd
      auth_param basic realm proxy
      acl authenticated proxy_auth REQUIRED
      http_access allow authenticated
    

  • Create a username and password

    • Use htpasswd to create an encrypted password file and user

      apt install apache2-utils
      
      sudo htpasswd -c /etc/squid/passwd your_username
      

    • You’ll be prompted to enter and confirm a password for your_username.

    • Save and close the file.

• Restart Squid:
  • Apply configuration changes: sudo systemctl restart squid

Testing the Proxy

• From a client machine, try accessing the internet or a specific website while the proxy settings are enabled.
• You should be able to browse the internet through your EC2 proxy.