Sec Universal Proxy

A proxy server is a kind of "mediator" between your equipment and a remote server (or the whole Internet). It can be used, for example, to swap your real IP address for another one, to bypass blocking. Proxies can also be actively used to intercept traffic (e.g. when testing created web applications).

In Android to disable the proxy, you need to go to "Settings", then - "Connection and sharing", then - to "VPN". And then just deactivate the item. Many phones also provide for automatic disabling of proxies and VPNs when the device is rebooted. That is, if the user is difficult to understand the settings of the gadget, then you can trivially restart it through a long press the lock button (forced reboot).

Proxy autoconfiguration is a feature that allows a client to automatically discover and configure the settings required to connect to a proxy server. This is typically done using a configuration file or script that provides instructions on how to set up the client's proxy settings.

The most common format for proxy autoconfiguration is the Proxy Auto-Config (PAC) file. A PAC file is a JavaScript file that contains functions to determine the appropriate proxy server(s) to use for a given URL or network condition. When a client is configured to use a PAC file, it will automatically execute the PAC script to determine the best proxy server for each request.

Another format for proxy autoconfiguration is the Web Proxy Autodiscovery Protocol (WPAD). WPAD uses a Dynamic Host Configuration Protocol (DHCP) option or a Domain Name System (DNS) query to locate a configuration script (usually named "wpad.dat") that contains the proxy settings. The client then executes the script to determine the appropriate proxy server(s) to use.

Proxy autoconfiguration makes it easier for clients to connect to the correct proxy server without manual configuration, especially in large organizations or networks where proxy settings may change frequently. It also allows for centralized management of proxy settings, making it simpler to update or change configurations across the entire network.

Most often it is used on the iPhone just to bypass the blocking of access to certain resources. But also VPN is one of the most effective methods of protecting your confidential information. After all, with VPN all traffic is additionally encrypted, the provider can't read it even if it's intercepted.

To enable proxies in your MacBook, you need to go to "System Preferences" (from the "Apple" menu), then open "Network", then - specify the type of connection you are using. Then select "Advanced Settings" (can be named as "Advanced"), then click on "Proxy". And then - either set the parameters manually, or specify a configuration file.