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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Obviously, he has been a county guard for so many years, and he still has many confidantes around him.The wolf king came forward with a low growl in his throat, his eyes glowing fiercely.
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A big man came on horseback. When he saw Zu an, he hurriedly got off his horse and saluted Master Zu, I have found what you asked me to check.
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It just so happened that someone was rushing to join in today, so we had to make good use of this opportunity.Unfortunately, I didn t understand it at that time.
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Pei You is not stupid , although he didn t know the inside story, but he also felt that he was not kind, and worried that he would really disturb Zu an s recovery, so he hurriedly tried to stop it.Sang Qian was about to burst into tears Is this kind of thing worthwhile Aunt Mu was very dexterous, and quickly took off her clothes, revealing her youthful body, and couldn t help admiring Qian er, you are so beautiful.
As for such consequences, he is not worried at all, he is shady in private, and with his current cultivation base, he is not afraid at all if he comes from the officialdom, and the other party offends the duke, it is a serious crime, not to mention that the imperial envoys are all his people.presumably they will not come to embarrass our Xiaoyaolou because of this.
It s just a matter of duty. Zu an replied modestly and began to ask the questions he cared about, By the way, just now we saw a big movement in the palace and rushed over, I don t know if those demon cult monsters have been punished or not.As for the discomfort in the opponent s leg, it was obviously caused by his stepping on it and breaking it.
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The two were angry with each other, and cursed the old fox in their stomachs.Although he can save his life, he will probably be injured.
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Pei You held her head high and said, It s a joke, those girls usually feel weak when they see me.Maybe it s because he s afraid of revealing his secrets, and we ll find out when he opens his mouth.
Although I m afraid of the cold, I can still resist the wind and snow.Drunkard, of course, refers to Xiao Yao. He carries a wine jug all day long and gets drunk.
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She clapped her hands as she spoke, and soon a new maid came out holding a flower basket containing many beautiful petals.When did I fall asleep last night She hurriedly lowered her head to check her clothes, and was relieved when she found that everything was in good condition.
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Go and ask him to come over the man ordered. Ah Me The emperor, who was worried about his consolation, was dumbfounded when he heard it.Of course, no one cares about it here, and many monks fought fiercely, and were finally auctioned off by an old man at the Golden Core Stage for 70,000 spirit stones.
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When I first instructed fellow daoists to practice, I felt that the kung fu practiced by fellow daoists The Dharma is extraordinary, so I don t know if fellow Taoists can pass it on to me in the future He Ji asked.Of course, none of these were problems for Lin Haoming.
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Before the God Transformation Stage Exist in Falun Temple took the risk to prolong his life, he also knew that he might fall, so he made preparations early in the morning, but there were exceptions.It has been less than half an hour since Lin Haoming fought against this person.
Seeing Lin Haoming s dexterous figure, the giant bird seemed to be a little unhappy.While Lin Haoming was urging him, he also kept firing spells at the magic circle.
I can promise you that I will never send spies to your Tianmomen again.The production of things is really too little. I have spent nearly three hundred years of accumulation for today Wang Zhihan said, raising his hand casually, and the water ball turned into a water column and rushed towards one of the piles of purple black flames.
Otherwise, if the round mirror completely expands to cover the entire palace, there is no way to avoid it.Seeing him flipping over, Lin Haoming cried out inwardly, and immediately activated the evil bead subconsciously.
But for this Li Huo Bixi, it was even worse. Finally, after more than half an hour of fierce fighting, this Li Huo Bixi was consumed to death by the two of them.It took a full seven or eight days, enough for a caring person to erase the traces.
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As for what this secret is, I am afraid that he will only find out when he meets his father.However, such a master was no match for the move of the young man in front of him, and what made them even more frightened was that the other party actually said that he was from the Jianchi Mansion.
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On the side, Shen Jingqiu also cheered Daddy is here.One must know that the entire Nanhuang ancient town is completely covered by defensive formations, and even the houses are extremely hard, and ordinary nine fold venerables may not be able to break through them.
The next moment, there was a scream in the void, and there was the sound of bones breaking.With a terrifying murderous intent, he quickly slashed down the front.
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Hey, the voice was deep but extremely clear, and the moment it appeared, the entire Cangsong Hall trembled violently.This is a gorgeous dividing line Catch it. The elite fighters from Xueshatang, Shendantang, and Liguitang all rushed towards Murong Qingcheng and Ruobingshan.
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In the end, all the icy air disappeared, and the hundreds of warriors came back to life.Another dragon shadow sword energy hovered over the sword body.
Not only him, Dark Red Shenlong, Patriarch Murong, Happy King and others also seized the time to recover their strength.Hearing this, Venerable Qinglian, Prince Tianhuo, and Ba Wuji were shocked, showing incredulous expressions.
Above the magic pit, the battlefield The leader of the black dragon was sent flying tens of thousands of meters, floating in the sky.
Cependant, il est utile de savoir comment fonctionne un VPN pour mieux comprendre le service. Voici ce qui se passe en coulisses :
