VPN est l’abréviation de « virtual private network » (réseau privé virtuel) et désigne un service qui protège votre connexion Internet et votre confidentialité en ligne. Il crée un tunnel chiffré pour vos données, protège votre identité en ligne en masquant votre adresse IP et vous permet d’utiliser les points d’accès Wi-Fi publics en toute sécurité.
Pourquoi avez-vous besoin d’un VPN ?
Personne n’aime être surveillé ou suivi, même s’il n’a rien à cacher. C’est pourquoi il est important de renforcer vos défenses en matière de confidentialité. Lorsque vous naviguez via un VPN, votre activité sur Internet est chiffrée de sorte que personne ne peut voir ce que vous faites en ligne. Voici d’autres raisons pour lesquelles vous avez besoin d’un VPN :
En général, lorsque vous essayez d’accéder à un site Web, votre FAI (fournisseur d’accès à Internet) reçoit la demande et vous redirige vers votre destination. Tandis que lorsque vous vous connectez à un VPN, il redirige d’abord votre activité Internet à travers un serveur VPN, avant de l’envoyer à votre destination. Voici ce qui se passe lorsque vous vous connectez à un VPN :
Le VPN change votre adresse IP et masque votre emplacement
Les personnes travaillant dans des pays où la liberté d’expression est limitée dépendent d’une connexion Internet privée pour leur travail. Leur vie peut même parfois en dépendre. Les personnes qui vivent sous un régime autoritaire devraient utiliser un VPN pour masquer leur adresse IP et garantir une sécurité supplémentaire pour leurs messages sensibles.
Fonctionnement d’un VPN
Il existe de nombreux types de VPN différents, mais nous allons nous concentrer ici sur le VPN grand public, celui que NordVPN offre. Lorsque vous téléchargez un logiciel VPN basé sur le client sur votre appareil, il effectue la majeure partie du travail à votre place : il vous suffit de vous identifier et de vous connecter.Cependant, il est utile de savoir comment fonctionne un VPN pour mieux comprendre le service. Voici ce qui se passe en coulisses :
Lorsque vous vous connectez à un service de réseau privé virtuel, celui-ci authentifie votre client auprès d’un serveur VPN.
Le serveur applique ensuite un protocole de chiffrement à toutes les données que vous envoyez et recevez.
Le service VPN crée un « tunnel » chiffré sur Internet. Cela sécurise les données qui circulent entre vous et votre destination.
Pour garantir la sécurité de chaque paquet de données, un VPN l’enveloppe dans un paquet externe, qui est ensuite chiffré par encapsulation. C’est l’élément central du tunnel VPN, qui assure la sécurité des données pendant leur transfert.
Lorsque les données parviennent au serveur, le paquet externe est supprimé via un processus de déchiffrement.
Comment fonctionne le tunneling VPN ?
Le tunnel VPN est créé en authentifiant d’abord votre client (un ordinateur, un smartphone ou une tablette) auprès d’un serveur VPN. Le serveur utilise ensuite l’un des nombreux protocoles de chiffrement pour s’assurer que personne ne puisse surveiller les informations qui circulent entre vous et votre destination en ligne.
N’oubliez pas qu’avant d’être envoyées et reçues sur Internet, les données doivent d’abord être divisées en paquets. Pour garantir que chaque paquet de données reste sécurisé, un service VPN l’enveloppe dans un paquet extérieur, qui est ensuite chiffré par un processus appelé encapsulation.
Ce paquet extérieur maintient la sécurité des données pendant le transfert, et il constitue l’élément central du tunnel VPN. Lorsque les données arrivent sur le serveur VPN, le paquet extérieur est retiré pour accéder aux données qu’il contient, ce qui nécessite un processus de déchiffrement.
Comment fonctionnent les serveurs VPN ?
Une fois le tunnel VPN établi, votre appareil envoie des informations chiffrées (comme le site Web que vous voulez visiter) au serveur VPN. Celui-ci les déchiffre et transmet les informations au serveur Web désigné. Il masque également votre véritable adresse IP avant d’envoyer les données. Au lieu de cela, vous utiliserez l’adresse IP du serveur VPN auquel vous êtes connecté(e).
Lorsque le serveur Web répond, le serveur VPN chiffre les données et vous les envoie par le biais de votre FAI. Votre client VPN déchiffre les données lorsqu’elles atteignent votre appareil.
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After Lin Haoming activated the magic formula, the Mirror of Shadow quickly responded, and with a flash of brilliance, that familiar figure appeared in the mirror.My lord, I understand Hearing Lin Haoming s reminder, Lan Qingyu seemed to have really figured out Lin Haoming The Ultimate Guide to Cannabis Infused Gummies: Recipes for Enhanced Relief s intention.
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Although all the boats rushed out, each of these small boats was equipped with a Yuanjing cannon, and hundreds of Yuanjing cannons were fired at once.In the following days, Lin Haoming began to sacrifice several treasures.
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I think you should know the distribution of the marrow washing real dew, right Mrs.Seeing that she was a little happy, it seemed that she just finished writing another article.
It is important to eliminate him before he recovers.While hesitating, Zhang Zijiang had already left in a guilty conscience, leaving her here shy and anxious.
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Following Hu Qianxiao s defection, the Golden Crow Guards left by the crown prince at the gate of the palace were no longer successful, and were soon captured by people under the Little Demon Empress command.As soon as the two women breathed a sigh of relief, a wisp of faint black energy emanated from him, entangled towards several people, it was obviously Sleepless Nights? Try These Cannabis Infused Elderberry Gummies! Feng Xi s devilish energy, and they were looking for a new host.
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At this time, his face was ashen, and finally his figure flashed in front of a stone gate.Just when Lin Haoming felt strange about this, suddenly there was a faint light in front of him, and the cave unexpectedly ended.
Such conditions, even if they are the maids sold by Zhenbaolou, are good enough.Seeing that she was a little happy, it seemed that she just finished writing another article.
Lin has some cold marrow crystals here, and I want to exchange them for blood dragon flowers Oh Fellow Daoist Lin has cold marrow crystals.In this way, Lin Haoming is not in a hurry to kill the opponent, and slowly plays with this Lei Peng, while paying attention to the changes in the battle situation.
The question of who will use the Zhongtian Xudan, I came to this thief city to become the city lord because of family compensation, I didn t expect this pill to appear in front of me again.Could it be the backlash from the Gu insects Suni couldn t believe Introduction it, you know, the Great Gu Master is the number one Carnival Bans Woman for CBD Gummies Understanding Cruise Line Policies Gu Master in the entire Nanzhou, and many people even think that the Great Gu Master may one day become the Gu King.
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The first was a dagger that was only half a foot long.made. Yaokang has never used this treasure before, and I don t know why Perhaps it is to find a more suitable opportunity, and it is also possible to attack Shi Ruolan suddenly.
Although Mr. Tang said so, seeing is believing Can you show us around Yao Dong asked with a smile.
Cependant, il est utile de savoir comment fonctionne un VPN pour mieux comprendre le service. Voici ce qui se passe en coulisses :
