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Documentazione di Ubuntu » Guida Ubuntu Desktop » Rete, web, email e chat » Networking terms & tips »

# Define proxy settings

## Cos'è un proxy?

A web proxy filters websites that you look at, it receipts requests from your web browser to fetches the web pages and their elements, and following a policy will decide to pass them you back. They are commonly used in businesses and at public wireless hotspots to control what websites you can look at, prevent you from accessing the internet without logging in, or to do security checks on websites.

## Change proxy method

1. Fare clic sull'icona a destra nella barra dei menù e selezionare Impostazioni di sistema.

2. Open Network and choose Network Proxy from the list on the left side of the window.

3. Choose which proxy method you want to use among the following methods.

   Nessuno

     The applications will use a direct connection to fetch the content on the web.

   Manual

     For each proxied protocol, define the address of a proxy and port for the protocols. The protocols are HTTP, HTTPS, FTP and SOCKS.

   Automatic

     An url points to a resource, which contains the appropriate configuration for your system.

The proxy settings will be applied to applications that use network connection to use the choosen configuration.

## More Information

- Networking terms & tips — Trovare il proprio indirizzo IP, sicurezza WEP e WPA, indirizzi MAC, proxy...