Features/Automatic Proxy Settings

Summary

Allow the user to setup transparent Proxy service.

Owner

Ariel Calzada

Current status

• Targeted release: 0.98
• Last updated: 2013-01-07
• Percentage of completion: 80%

Detailed Description

Sugar deployments and users need to be able to set a proxy to access some network services.

In this entry you can learn a way of configuring automatic proxy server (PAC and WPAD) for testing purposes.

For testing a proxy in XO you can go to: Features/Proxy Settings

Benefit to Sugar

See Detailed Description.

Scope

It's not directly related to XO, it's just a part for building an environment for automatic proxy testing in XO

PAC - Proxy Auto Config

PAC method for proxy is very simple. You have to create a web-accessible file with special syntax in which you include proxy server data. This example works with Apache server. You can take a look to Bibliograpy for more info about PAC file configuration and installation in other webservers.

Steps:

• Create .htaccess file and add the following content:

  AddType application/x-ns-proxy-autoconfig .pac

• Create PAC file and add the following content:

  function FindProxyForURL(url, host) {
      return "PROXY PROXY_SERVER_IP_OR_HOSTNAME:PORT";
  }

• Upload both file to the same location:

 mv proxy.pac /var/www/proxy.pac
 mv .htaccess /var/www/.htaccess

• Restart apache /etc/init.d/apache2 restart

WPAD - Web Proxy Autodiscovery

Web Proxy Auto-Discovery Protocol, or WPAD, is a technology which aids a web browser in automatically detecting the location of a PAC file using DNS or DHCP.

A browser that supports both DHCP and DNS will first attempt to locate a PAC file using DHCP, and should a DHCP configuration not exist fail-over to DNS WPAD will occur. If neither are configured, a browser will fail open.

Bibliography

• Web Proxy Autodiscovery Protocol
• FindProxyForURL
• Proxy Auto Config