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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There won t be any serious conflicts with me in it.That s true You have a little hidden injury on your body, which you can t usually see, but when you attack the golden elixir, it will hinder you from breaking through the bottleneck.
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Little baby, you are so ignorant. I have given you a chance to escape, but you didn t make good use of it.And Lin Xuan showed a sneer The one who killed you.
The Jiuli Dynasty is also one of them. The territory of the Jiuli Dynasty is connected with the Taiyi Dynasty.Such a terrifying sword light, such a terrifying flame power, this man is not only a swordsman, but also a fire warrior.
Because besides Princess Baiwei, they couldn t think of another person who could have the same purpose as them.
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Zhao Zhi nodded with satisfaction, and kept thinking about it.When she heard that Zaan was looking for her, she was so happy that she almost forgot to put on her shoes, but when she arrived, she found that the other party had brought two people with her.
Yu Yanluo
Her jade cheeks were also burning red, and she never expected that he would This is the reason.Ugly, Master Zuo. There was a trace of contempt in Pei You s eyes.
The head is gone, so what can you tell Pei Mianman covered his mouth and nose with a handkerchief, and at the same time handed Zaun one.If these people form an army formation, he will not be so easy to succeed.
Only at this moment did Zuan understand what it means to have a skin as smooth as jade, and the beauty in front of him is simply the most perfect work of art in the world.But when she got the hairpin in her hand, she was stunned when she saw the exquisite and gorgeous decorations.
Everyone in Jian s family breathed a sigh of relief, but before they had time to be happy, several groups of people surrounded them from all directions.Nan Xun Xun
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His heart skipped a beat, and he hurriedly turned his head and went downstairs.Where are you going Seeing the other party turn around, Yu Yanluo asked hastily.
Pei. Sang Hong and Zu An hurried outside, seeing the dejected two, they couldn t help being shocked Where s the person The two didn t bring back the suspects as they imagined, but brought a lot of stretchers , covered with white cloth one after another, seeing this, Sang Hong and Zu An couldn t help but The Risks of Repetitive Strain Injuries feel a sinking heart.
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Pfft Qi Tu finally spit out a mouthful of green blood, and then he collapsed on the ground as if he was falling apart.Xu Yu looked worried According to the descriptions of those people in the house, the thief s cultivation is unfathomable.
Bi Linglong subconsciously said, Is it colder in Yunzhong County now Rong Mo looked Weird Princess Concubine is worried about Master Zu Bi Linglong s heart skipped a beat, and she realized that she had lost her The Shelf Life Conundrum: Are Expired CBD Gummies Safe to Use? composure, but she reacted quickly, and immediately said with a normal expression Master Zu represents our East Palace after all, if this errand It s bad for the crown prince.
Freshening, the final product can greatly enhance the umami taste of the food.He was definitely not just rough and tough. With this miraculous agility alone, he was indeed much better than practitioners of the same level.
Seeing this scene, Jian Taiding s mentality completely collapsed, and he thought that his sister in law was pure and pure, but she was just having an affair with this man.After speaking, he handed over the prepared audio visual mirror.
Only Zaan smiled and said nothing, the other party did appear to be very graceful on the surface, but it is a pity that the continuous anger in the background betrayed him deeply.Now I am a Duke, in the cloud I am the emperor in this county, and I have the most beautiful woman in the world as my wife
At this point, he glanced at Yu Yanluo, who was disheveled, and snorted dissatisfiedly, My life is already perfect, there is really no need Going to take risks.
Cependant, il est utile de savoir comment fonctionne un VPN pour mieux comprendre le service. Voici ce qui se passe en coulisses :
