Desactivar IPv6 para una mejor protección VPN

The internet resources especially devices use Internet Protocol (IP) addresses which are unique for communication purposes. There are two major IP addressing schemes; Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv4). Most devices on the internet have been using the IPv4 for a long time. And since the internet grows exponentially according to the number of users, IPv4 addresses are nearly maxed out. It is this problem that led to the development of another upgraded version, the IPv6.

En términos de capacidad, IPv4 tiene una longitud de 32 bits, lo que se traduce en unos 4.300 millones de direcciones IP. En cambio, IPv6 tiene una longitud de 128 bits, lo que supone unas 3,4×10^38 direcciones IP, más de un billón. Con esta capacidad, es lógico sustituir el esquema IPv4 por el IPv6.

¿Por qué desactivarlo?

IPv6 tiene muchas ventajas sobre IPv4, pero debido a otros factores, es mejor seguir utilizando el esquema de direccionamiento IPv4. A continuación te explicamos por qué deberías desactivarlo, sobre todo si utilizas una VPN;

Fugas de IP

Most VPN service providers do not fully support the IPv6 addressing scheme, but they are compatible with IPv4. When tunneling occurs, data traffic using IPv4 will rarely leak as compared to IPv6. Due to incompatibility issues, data traffic using IPv6 will bypass the VPN tunnel and will be serviced directly by the ISP. This, in turn, will make you public to prying eyes including your ISP hence a leak.

Aparte de las fugas, aquí tienes otras razones por las que deberías desactivarlo;

Incompatibilidad de hardware

Most current internet-based hardware such as firewalls don’t fully support IPv6 while some servers support the addressing. This incompatibility has given rise to vulnerabilities which some malware has exploited. For instance, the most recent widespread malware that used command and control servers were IPv6 based. This gave them the advantage to bypass most firewalls that were only blocking IPv4 internet traffic.

Problemas de configuración

IPv6 is different from IPv4, and most people know how to configure IPv4 than IPv6. A transition from IPv4 to IPv6 can cause mistakes and confusions which can make it hard to troubleshoot network entities. Since also IPv6 hasn’t been adopted much, tunneling IPv6 over IPv4 has also led to security gaps not only in VPNs but also in other networks in general.

Cómo saber si utiliza IPv6 en su red

This is a simple way to know as it involves typing this URL http://ip6.nl/  in your browser. The page will finish loading with both IPv4 and IPv6 results. If it says no IPv6 connectivity, you are safe.

Cómo desactivar IPv6 en Windows 10

Paso 1. Haga clic con el botón derecho en el icono Red de la barra de tareas y, a continuación, haga clic en Abrir el Centro de redes y recursos compartidos.

Paso 2. En la ventana de configuración que se abre, haga clic en Cambiar configuración/opciones del adaptador

Paso 3. Haga clic con el botón derecho en el adaptador de red activo, puede ser WIFI o Ethernet dependiendo de su conexión, y seleccione Propiedades.

Paso 4. Cuando se abra la ventana de propiedades, desplázate hasta encontrar la versión 6 del protocolo de Internet (TCP/IPv6). Desmarca la casilla situada junto a ella y haz clic en Aceptar para guardar los cambios.

Paso 5. Ahora reinicie su ordenador y disfrute utilizando su VPN sin fugas IPv6.

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