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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At the end, the dark red dragon directly looked up to the sky and laughed.The Seventh Prince and the five great powers around him also recognized each other s identities.
Unexpectedly, we didn t guess it in the end, and the final winner turned out to be the eighth prince.Sure enough, the aura on the first knife recovered quickly and reached its peak.
Boom Boom Boom This ball of ice and snow light contains supreme power, capable of killing any king under great power.You don t need to tell me, I got the golden light in Lin Xuan s eyes.
Lin Xuan snorted coldly, the light in his eyes flickered, and he fought hard.Soon, the thunder and lightning disappeared, and everyone saw what was going on inside.
However, with the passage of time, this terrifying monster has disappeared into the long river of history.On the other side, the woman in white also nodded in agreement.
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The void was cut into pieces in an instant, and those skeleton soldiers were also chopped off in the middle.
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Is it Lin Xuan s group They were shocked, these people are too bold.escape The blood demon and other five people quickly fled to the distance, Yin Tianfeng also turned around and fled, the flames on the horse burned and turned into a stream of lightning.
This time, she met another good thing, that is a magic dragon.Prince Dragon, this time is really in crisis, Prince Dragon s face is so cold, I don t want this avatar today, I will kill you too.
After so many years, they really had no news of Lin Xuan, and they were even worried about whether something happened to Lin Xuan, but it was nothing.With a backhand, he punched it out. This punch was also extremely fast, making it impossible for the strange man to dodge.
Such people are the most terrifying. Looking at this scene, Nalanliang felt his scalp tingle, is this the first genius of their family But at this moment, he was kneeling like an ant and begging for mercy.With a wave of his hand, 13 treasures flew out of it, flying between the sky and the earth.
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A star list genius was abolished, Lan Zhilu was killed, and even the avatar of the prince was beheaded.Long Ao also had a dignified look on his side. He originally thought that his years of practice could narrow the gap, but now it seems that the gap between him and the other party has widened again.
He seems to be a master of the soul system. I ve heard of him.And even if there is a big battle here, it won t be damaged, after all, it is an ancient building transformed from the body of the Great Sage.
I guess their Ye family should have come to join forces with the Dragon Prince.This is a gorgeous dividing line Please remind readers of novels Please pay attention to rest your eyes when reading for a long time.
I hate it How could he have such a hole card Those people around were roaring crazily.The sea dragon swept over and engulfed it with the power of ten thousand seas.
Come on, how do you compare Jian Wuque walked out, gritted his teeth and said, A cold woman from the Ice and Snow Palace sneered, are you in such a hurry to die Well, it s very simple, you Xuantian Pavilion and our three sects will Doctors To Cure Erectile Dysfunction videos Fo 🗪ti For Erectile Dysfunction Videos take turns to compete with each other, winning two out of three games.
At that time, you will see my senior brother shine again.After entering, those who are weak will be easily burned to ashes.
This is a gorgeous dividing line Hand, but God General Qianchen disagrees, and God General Haiyuan is also hesitant.The people around exclaimed again, the people in the Dragon Palace are going crazy with anger, damn it, why does this kid have such good luck The people of the Shenmeng were Erectile Dysfunction Natural 🌷treatment Pdf Videos Tethered 🬡cord Erectile Dysfunction Videos extremely excited, great, if you see it, they are not without background.
In front, only Lin Xuan s back was left. Lin Xuan was under great pressure, and the dragon sword spirit emerged from his body, covering him.The defense from this superb ring is probably even stronger than Zhonglou s Houtu physique.
The black robed monk was also shaken back, and looked at him in surprise.It s just that the young woman is also extremely embarrassed at the moment.
The next moment, the light in his eyes burst out suddenly.Today, the eighth prince who eliminated you also said loudly, he was very excited, because this is definitely an excellent opportunity.
Cooperate with the big star umbrella to launch a series of devastating attacks.After all, being able to defeat the existence of the White Realm is absolutely terrifying, right.
On the other side, the mighty man in red also shot rows of terrifying palm shadows, trying to break through.And it has the same power. This zero degree space is really amazing, it can simulate such a real enemy.
All of a sudden, everyone set off towards Hanfei Mountain.Therefore, they can only run away. Lin Xuan s footsteps were pulsating, let s go, to see the Beidou ruins.
When he appeared, he still came to Tan Yifei. What, so fast Tan Yifei s face changed drastically, and his pupils shrank sharply.So, he changed tactics. He turned around and stared at Lin Xuan.
And the middle aged man nodded, yes, it was Dark Canyon.You re welcome, why are you so rude Lin Xuan sneered.
It was none other than the dark red dragon and the snow white monkey.Not long after they ran, thunderbolts appeared in the sky again and landed with a crash.
The appearance of the two is about thirty years old, but this is not their real age.Hum, the old man in white robe snorted coldly, waved his palm, and immediately there were ten silver light beams behind him, rushing forward quickly.
This mountain peak is very huge, but it doesn t have a front.The third prince. Not good, the great powers around roared and wanted to fight back.
To be honest, the strength shown by Jian Shisan before was really too strong.
Cependant, il est utile de savoir comment fonctionne un VPN pour mieux comprendre le service. Voici ce qui se passe en coulisses :
