Cosa sono i captive portals

A captive portal is a web page that is often displayed before you can access the Internet on public networks in airports, hotels, libraries, and other places.

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Tails cannot connect to the Tor network when the Internet connection is initially blocked by a captive portal.

Implicazioni di sicurezza delBrowser Non Sicuro

Per una maggiore sicurezza, il Browser Non Sicuro è disabilitato per impostazione predefinita perché:

  • The Unsafe Browser is not anonymous.

    The Unsafe Browser does not use Tor. The websites that you visit can see your real IP address.

    This is why we recommend that you:

  • The Unsafe Browser can be used to deanonymize you.

    An attacker could exploit a security vulnerability in another application in Tails to start an invisible Unsafe Browser and reveal your IP address, even if you are not using the Unsafe Browser.

    For example, an attacker could exploit a security vulnerability in Thunderbird by sending you a phishing email that starts an invisible Unsafe Browser and reveals your IP address to the attacker.

    Such an attack is very unlikely but could be performed by a strong attacker, such as a government or a hacking firm.

    This is why we recommend that you:

    • Only enable the Unsafe Browser if you need to sign to a network using a captive portal.
    • Always upgrade to the latest version of Tails to fix known vulnerabilities as soon as possible.

    We have plans to fix the root cause of this problem but it requires important engineering work.

Per sapere come Tails implementa il Browser Insicuro, vedi la nostra documentazione di design del Browser Insicuro.

Avviare il Browser Non Sicuro

Per avviare Browser Non Sicuro:

  1. Quando appare la schermata di accoglienza, clicca sul tasto Aggiungi impostazione
aggiuntiva.

  2. Scegli Browser Non Sicuro nella finestra di dialogo Impostazione aggiuntiva.

  3. Seleziona l'opzione Abilita il Browser Non Sicuro .

  4. Clicca Avvia Tails.

  5. In Tails, vai in Applicazioni ▸ Internet ▸ Browser Non Sicuro.

Signing in to a network using a captive portal

To sign in to a network using a captive portal:

  1. Try visiting an innocent-looking website that is common in your location, for example, a search engine or news site:

  2. If you are redirected to a captive portal, sign in to the network.

    If you are not redirected to a captive portal and the website loads, this means that you are already connected to the Internet. Close this browser the Unsafe Browser and try connecting to the Tor network again.

  3. After Tor is ready, close this browser. the Unsafe Browser.

    You can use Tor Browser or any other application as usual.

Per abilitare sempre il Browser Non Sicuro, attiva la funzione Schermata di Accoglienza dell' Archivio Persistente.

Se si scaricano file usando il Browser Non Sicuro, è impossible aprirli al di fuori del Browser Non Sicuro stesso.