{"id":101359,"date":"2021-09-21T22:22:43","date_gmt":"2021-09-21T20:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn"},"modified":"2021-09-21T22:22:43","modified_gmt":"2021-09-21T20:22:43","slug":"predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn","title":{"rendered":"Presentado un m\u00f3dulo del kernel capaz de acelerar OpenVPN varias veces","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Los desarrolladores del paquete para crear redes privadas virtuales OpenVPN han presentado el m\u00f3dulo del n\u00facleo ovpn-dco, que permite aumentar significativamente el rendimiento de VPN. Aunque el m\u00f3dulo a\u00fan est\u00e1 en desarrollo y actualmente solo se centra en la rama linux-next y tiene un estatus experimental, ya ha alcanzado un nivel de estabilidad que permite su uso para el servicio OpenVPN Cloud. <\/p>\n

En comparaci\u00f3n con una configuraci\u00f3n basada en la interfaz tun, la aplicaci\u00f3n del m\u00f3dulo tanto del lado del cliente como del servidor al utilizar el cifrado AES-256-GCM ha permitido un aumento de la capacidad de transmisi\u00f3n de 8 veces (de 370 Mbit\/s a 2950 Mbit\/s). Al aplicar el m\u00f3dulo solo en el lado del cliente, la capacidad de transmisi\u00f3n aument\u00f3 tres veces para el tr\u00e1fico saliente y no cambi\u00f3 para el tr\u00e1fico entrante. Al aplicar el m\u00f3dulo solo del lado servidores<\/a> la capacidad de transmisi\u00f3n aument\u00f3 4 veces para el tr\u00e1fico entrante y un 35% para el tr\u00e1fico saliente.

\"Presentado<\/center> <\/p>\n

El aumento de velocidad se logra al trasladar todas las operaciones de cifrado, procesamiento de paquetes y gesti\u00f3n del canal de comunicaci\u00f3n al n\u00facleo de Linux, lo que permite eliminar la sobrecarga asociada con el cambio de contexto, optimizar el funcionamiento mediante el acceso directo a la API interna del n\u00facleo y evitar la lenta transmisi\u00f3n de datos entre el n\u00facleo y el espacio del usuario (el cifrado, la descifrado y el enrutamiento se realizan mediante el m\u00f3dulo sin enviar tr\u00e1fico al manejador en el espacio del usuario). <\/p>\n

Se destaca que el impacto negativo en el rendimiento VPN<\/a> se debe principalmente a las operaciones de cifrado que consumen muchos recursos y a las demoras provocadas por el cambio de contexto. Para acelerar el cifrado se han utilizado extensiones de procesador, como Intel AES-NI, pero los cambios de contexto, hasta la aparici\u00f3n de ovpn-dco, segu\u00edan siendo un cuello de botella. Adem\u00e1s de utilizar las instrucciones proporcionadas por el procesador para acelerar el cifrado, el m\u00f3dulo ovpn-dco tambi\u00e9n asegura la segmentaci\u00f3n de las operaciones de cifrado en segmentos separados y su procesamiento en modo multihilo, lo que permite aprovechar todos los n\u00facleos de CPU disponibles. <\/p>\n

De las limitaciones actuales de la implementaci\u00f3n, que se corregir\u00e1n en el futuro, se destaca el soporte \u00fanicamente para los modos AEAD y 'none' (sin autenticaci\u00f3n) y los cifrados AES-GCM y CHACHA20POLY1305. Se planea incluir soporte para DCO en la pr\u00f3xima versi\u00f3n de OpenVPN 2.6, programada para el cuarto trimestre de este a\u00f1o. Actualmente, el m\u00f3dulo se est\u00e1 probando en la versi\u00f3n beta del cliente OpenVPN3 para Linux y en las compilaciones experimentales del servidor OpenVPN para Linux. Un m\u00f3dulo similar, ovpn-dco-win, tambi\u00e9n se est\u00e1 desarrollando para el n\u00facleo de Windows.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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