{"id":667,"date":"2023-04-17T06:49:00","date_gmt":"2023-04-17T05:49:00","guid":{"rendered":"https:\/\/mobile.lebara.com\/gb\/en\/blog\/?p=667"},"modified":"2023-06-21T16:15:39","modified_gmt":"2023-06-21T15:15:39","slug":"what-are-vpns-and-how-do-they-work","status":"publish","type":"post","link":"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/","title":{"rendered":"Co jsou s\u00edt\u011b VPN a jak funguj\u00ed?"},"content":{"rendered":"<p>V\u011bt\u0161ina z n\u00e1s vid\u011bla, \u010detla a sly\u0161ela reklamy na slu\u017eby VPN na r\u016fzn\u00fdch platform\u00e1ch, ale stoj\u00ed za to si je p\u0159edplatit? A co je je\u0161t\u011b d\u016fle\u017eit\u011bj\u0161\u00ed, co je to VPN? Mohou VPN chr\u00e1nit na\u0161e <a href=\"https:\/\/blog.lebara.co.uk\/cs\/what-is-the-ios-privacy-report-on-iphone\/\">ochrana osobn\u00edch \u00fadaj\u016f<\/a> a identitu online? Pokud ano, jak to funguje? Z\u016fsta\u0148te s n\u00e1mi, abychom v\u00e1m odpov\u011bd\u011bli na tyto ot\u00e1zky a na n\u011bkolik dal\u0161\u00edch.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"P\u0159epnut\u00ed tabulky obsahu\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">P\u0159ep\u00edna\u010d<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_a_VPN\" >Co je to VPN?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_VPN_and_Do_I_Need_It\" >Co je VPN a pot\u0159ebuji ji?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_VPN_and_Why_Do_I_Need_It\" >Co je VPN a pro\u010d ji pot\u0159ebuji?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_VPN_and_Why_Do_I_Need_It_To_Keep_Your_Data_from_Being_Sold\" >Co je VPN a pro\u010d ji pot\u0159ebuji: Aby va\u0161e data nebyla prod\u00e1na<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_VPN_and_Why_Do_I_Need_It_To_Access_Inaccessible_Content\" >Co je VPN a pro\u010d ji pot\u0159ebuji: Pro p\u0159\u00edstup k nedostupn\u00e9mu obsahu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_is_VPN_and_Why_Do_I_Need_It_To_Keep_Your_Sensitive_Data_Safe_from_Cybercriminals\" >Co je VPN a pro\u010d ji pot\u0159ebuji: Aby byla va\u0161e citliv\u00e1 data v bezpe\u010d\u00ed p\u0159ed kyberzlo\u010dinci?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/#What_Are_VPNs_and_How_Do_They_Protect\" >Co jsou s\u00edt\u011b VPN a jak chr\u00e1n\u00ed?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_VPN\"><\/span>Co je to VPN?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>VPN je zkratka pro virtu\u00e1ln\u00ed priv\u00e1tn\u00ed <a href=\"https:\/\/blog.lebara.co.uk\/cs\/how-to-find-out-what-network-youre-on\/\">s\u00ed\u0165<\/a> a p\u0159esn\u011b jak n\u00e1zev napov\u00edd\u00e1, p\u0159ipojen\u00ed VPN uchov\u00e1v\u00e1 \u00fadaje u\u017eivatele. <a href=\"https:\/\/blog.lebara.co.uk\/cs\/ip-ratings-explained-how-your-smartphone-can-withstand-water-and-dust\/\">IP<\/a> soukromou online adresu odrazem od virtu\u00e1ln\u00ed proxy s\u00edt\u011b. S\u00ed\u0165 proxy p\u0159i\u0159azuje virtu\u00e1ln\u00ed IP adresu online p\u0159\u00edtomnosti a aktivit\u00e1m u\u017eivatele a skr\u00fdv\u00e1 jeho skute\u010dnou identitu, poskytovatele internetov\u00fdch slu\u017eeb a polohu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VPN_and_Do_I_Need_It\"><\/span>Co je VPN a pot\u0159ebuji ji?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Virtu\u00e1ln\u00ed priv\u00e1tn\u00ed s\u00ed\u0165 pom\u00e1h\u00e1 udr\u017eet va\u0161i online identitu a aktivity skryt\u00e9 p\u0159ed zv\u011bdav\u00fdma o\u010dima. Chcete, aby ka\u017ed\u00fd, od poskytovatele internetov\u00fdch slu\u017eeb a platforem soci\u00e1ln\u00edch m\u00e9di\u00ed a\u017e po online firmy a kyberzlo\u010dince, zaznamen\u00e1val a sledoval v\u0161e, co d\u011bl\u00e1te online? Pokud je odpov\u011b\u010f ne, pak pot\u0159ebujete s\u00ed\u0165 VPN, abyste p\u0159ed nimi udr\u017eeli svou identitu a aktivity skryt\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VPN_and_Why_Do_I_Need_It\"><\/span>Co je VPN a pro\u010d ji pot\u0159ebuji?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Jak ji\u017e bylo zm\u00edn\u011bno, virtu\u00e1ln\u00ed priv\u00e1tn\u00ed s\u00ed\u0165 je proxy s\u00ed\u0165, kter\u00e1 chr\u00e1n\u00ed va\u0161i p\u016fvodn\u00ed polohu, \u00fadaje o proch\u00e1zen\u00ed a osobn\u00ed informace p\u0159ed zp\u011btn\u00fdm vystopov\u00e1n\u00edm. Pro ty, kte\u0159\u00ed nejsou obezn\u00e1meni s v\u00fdznamem soukrom\u00ed na internetu, je p\u0159irozen\u00e9, \u017ee se ptaj\u00ed na v\u00fdznam takov\u00fdch opat\u0159en\u00ed na ochranu soukrom\u00ed. Koneckonc\u016f, pokud ned\u011bl\u00e1te nic nez\u00e1konn\u00e9ho, pro\u010d byste m\u011bli pot\u0159ebovat skr\u00fdvat, co d\u011bl\u00e1te online? Jak u\u017e to tak b\u00fdv\u00e1, odpov\u011bdi v\u00e1s mo\u017en\u00e1 p\u0159ekvap\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VPN_and_Why_Do_I_Need_It_To_Keep_Your_Data_from_Being_Sold\"><\/span>Co je VPN a pro\u010d ji pot\u0159ebuji: Aby va\u0161e data nebyla prod\u00e1na<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Podle zpr\u00e1vy zve\u0159ejn\u011bn\u00e9 Feder\u00e1ln\u00ed obchodn\u00ed komis\u00ed v roce 2021 m\u016f\u017ee v\u00e1\u0161 poskytovatel internetov\u00fdch slu\u017eeb vid\u011bt, zaznamen\u00e1vat a. <a href=\"https:\/\/blog.lebara.co.uk\/cs\/8-different-ways-to-sell-a-mobile-phone\/\">prod\u00e1vat<\/a> v\u0161echny va\u0161e online aktivity jako z\u00e1kaznick\u00e1 data zainteresovan\u00fdm spole\u010dnostem. Nejhor\u0161\u00ed na tom je, \u017ee stejn\u00e1 zpr\u00e1va potvrzuje, \u017ee ka\u017ed\u00fd poskytovatel internetov\u00fdch slu\u017eeb skute\u010dn\u011b prod\u00e1v\u00e1 \u00fadaje o online aktivit\u00e1ch a identit\u011b sv\u00fdch z\u00e1kazn\u00edk\u016f zainteresovan\u00fdm stran\u00e1m, proto\u017ee je to zcela leg\u00e1ln\u00ed.<\/p>\n\n\n\n<p>Ve v\u0161\u00ed slu\u0161nosti, z\u00e1kony v USA vy\u017eaduj\u00ed, aby poskytovatel\u00e9 internetov\u00fdch slu\u017eeb nejprve anonymizovali soubory dat a teprve pot\u00e9 je prod\u00e1vali r\u016fzn\u00fdm firm\u00e1m za \u00fa\u010delem zisku. S touto deklarovanou anonymitou je v\u0161ak spojeno n\u011bkolik z\u00e1sadn\u00edch probl\u00e9m\u016f. V prvn\u00ed \u0159ad\u011b je to skute\u010dnost, \u017ee poskytovatel\u00e9 internetov\u00fdch slu\u017eeb ji\u017e p\u0159esn\u011b v\u011bd\u00ed, kdo jsou jejich z\u00e1kazn\u00edci a kter\u00fd soubor \u00fadaj\u016f komu pat\u0159\u00ed.<\/p>\n\n\n\n<p>Bez pou\u017eit\u00ed s\u00edt\u011b proxy nelze p\u0159ed poskytovatelem internetu nic utajit. Poskytovateli internetov\u00fdch slu\u017eeb tak nic nebr\u00e1n\u00ed ve sledov\u00e1n\u00ed a profilov\u00e1n\u00ed va\u0161ich osobn\u00edch \u00fadaj\u016f. Za druh\u00e9 se p\u0159edpokl\u00e1d\u00e1, \u017ee poskytovatel internetov\u00fdch slu\u017eeb bude pln\u011b dodr\u017eovat platn\u00e9 z\u00e1kony a nebude nic prod\u00e1vat velk\u00fdm internetov\u00fdm firm\u00e1m, ani\u017e by p\u0159edt\u00edm zajistil anonymitu pro sv\u00e9 u\u017eivatele.<\/p>\n\n\n\n<p>Pokud nen\u00ed zah\u00e1jeno vy\u0161et\u0159ov\u00e1n\u00ed jejich \u010dinnosti nebo se z\u00e1kazn\u00edk nerozhodne napadnout je pr\u00e1vn\u00ed cestou, nem\u00e1 b\u011b\u017en\u00fd spot\u0159ebitel mo\u017enost si tento p\u0159edpoklad ov\u011b\u0159it. V\u011bt\u0161ina u\u017eivatel\u016f se nikdy s jistotou nedozv\u00ed, zda jejich \u00fadaje skute\u010dn\u011b prod\u00e1v\u00e1 poskytovatel internetov\u00e9ho p\u0159ipojen\u00ed bez dohledateln\u00fdch osobn\u00edch \u00fadaj\u016f.<\/p>\n\n\n\n<p>V neposledn\u00ed \u0159ad\u011b je t\u0159eba znovu zv\u00e1\u017eit skute\u010dnost, \u017ee v\u00e1\u0161 poskytovatel internetu m\u016f\u017ee leg\u00e1ln\u011b prod\u00e1vat \u00fadaje o pou\u017e\u00edv\u00e1n\u00ed internetu r\u016fzn\u00fdm firm\u00e1m za \u00fa\u010delem zisku. Souhlas\u00edte s t\u00edm, aby v\u00e1\u0161 poskytovatel internetov\u00fdch slu\u017eeb vyu\u017e\u00edval va\u0161e online informace jako dal\u0161\u00ed zdroj p\u0159\u00edjm\u016f? Plat\u00edte p\u0159edplatn\u00e9 za p\u0159\u00edstup ke slu\u017eb\u011b a p\u0159i pou\u017e\u00edv\u00e1n\u00ed t\u00e9to slu\u017eby generujete cenn\u00e9 \u00fadaje, kter\u00e9 m\u016f\u017ee v\u00e1\u0161 poskytovatel internetu prodat a vytvo\u0159it si tak dal\u0161\u00ed zdroj p\u0159\u00edjm\u016f.<\/p>\n\n\n\n<p>A\u0165 u\u017e hled\u00e1te online d\u00edt\u011b <a href=\"https:\/\/blog.lebara.co.uk\/cs\/the-top-7-recipe-apps\/\">potraviny<\/a>, videohry nebo filmy, bu\u010fte si jisti, \u017ee v\u00e1\u0161 poskytovatel internetov\u00e9ho p\u0159ipojen\u00ed v\u00ed, jak\u00e9 jsou va\u0161e n\u00e1kupn\u00ed pl\u00e1ny a co z nich lze vy\u010d\u00edst. Jakmile tyto \u00fadaje prodaj\u00ed, je\u0161t\u011b v\u00edce spole\u010dnost\u00ed bude v\u011bd\u011bt v\u0161e, co pot\u0159ebuje v\u011bd\u011bt tak\u00e9.<\/p>\n\n\n\n<p>Pokud v\u00e1m nic z toho nezn\u00ed p\u0159\u00edli\u0161 l\u00e1kav\u011b, pak nejste jedin\u00ed. Miliony lid\u00ed po cel\u00e9m sv\u011bt\u011b pou\u017e\u00edvaj\u00ed p\u0159ipojen\u00ed VPN, aby zabr\u00e1nili poskytovatel\u016fm internetov\u00fdch slu\u017eeb \u0161pehovat jejich online aktivity a profilovat je za \u00fa\u010delem vytv\u00e1\u0159en\u00ed v\u00fdnosn\u00fdch datov\u00fdch soubor\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VPN_and_Why_Do_I_Need_It_To_Access_Inaccessible_Content\"><\/span>Co je VPN a pro\u010d ji pot\u0159ebuji: Pro p\u0159\u00edstup k nedostupn\u00e9mu obsahu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Je pravda, \u017ee slu\u017eby VPN mohou chr\u00e1nit va\u0161e soukrom\u00ed a data p\u0159ed poskytovateli internetov\u00fdch slu\u017eeb, platformami soci\u00e1ln\u00edch m\u00e9di\u00ed a podniky obecn\u011b, ale to nen\u00ed v\u0161e, k \u010demu jsou u\u017eite\u010dn\u00e9. Pokud v\u00e1m n\u011bkdy n\u011bjak\u00e1 webov\u00e1 str\u00e1nka zablokovala zem\u011bpisnou polohu, VPN v\u00e1m ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f pom\u016f\u017ee tato omezen\u00ed p\u0159ekonat.<\/p>\n\n\n\n<p>Pokud tento term\u00edn nezn\u00e1te, jedn\u00e1 se o geoblokaci, kterou pou\u017e\u00edvaj\u00ed maloobchodn\u00ed webov\u00e9 str\u00e1nky, obecn\u00e9 webov\u00e9 str\u00e1nky a streamovac\u00ed slu\u017eby:<\/p>\n\n\n\n<ol class=\"wp-block-list\" type=\"1\"><li>Zabr\u00e1nit lidem z ur\u010dit\u00fdch zem\u011bpisn\u00fdch oblast\u00ed v p\u0159\u00edstupu na jejich webov\u00e9 str\u00e1nky.<\/li><li>zabr\u00e1nit u\u017eivatel\u016fm z r\u016fzn\u00fdch zem\u011bpisn\u00fdch oblast\u00ed v p\u0159\u00edstupu k obsahu dostupn\u00e9mu v jin\u00e9 zem\u011bpisn\u00e9 oblasti.<\/li><\/ol>\n\n\n\n<p>Jak u\u017e v\u011bt\u0161ina z v\u00e1s mo\u017en\u00e1 tu\u0161\u00ed, webov\u00e9 str\u00e1nky a streamovac\u00ed slu\u017eby mohou zjistit p\u016fvodn\u00ed polohu a geoblokovat ji, proto\u017ee IP adresa u\u017eivatele je sv\u00edt\u00edc\u00edm maj\u00e1kem jeho sou\u010dasn\u00e9 polohy. V\u0161echny slu\u0161n\u00e9 slu\u017eby VPN umo\u017e\u0148uj\u00ed sv\u00fdm u\u017eivatel\u016fm vybrat si ze seznamu zem\u011bpisn\u00fdch poloh.<\/p>\n\n\n\n<p>N\u011bkte\u0159\u00ed z nich jim dokonce umo\u017e\u0148uj\u00ed vybrat si r\u016fzn\u00e1 m\u00edsta v r\u00e1mci jedn\u00e9 zem\u011b. Kdy\u017e si vyberete konkr\u00e9tn\u00ed m\u00edsto, poskytovatel slu\u017eeb VPN v\u00e1m p\u0159id\u011bl\u00ed anonymn\u00ed, ale m\u00edstn\u00ed IP adresu. V d\u016fsledku toho se geoblokace st\u00e1v\u00e1 ne\u00fa\u010dinnou, proto\u017ee webov\u00e1 str\u00e1nka nebo streamovac\u00ed slu\u017eba v\u00e1s nyn\u00ed rozpozn\u00e1 jako m\u00edstn\u00ed osobu.<\/p>\n\n\n\n<p>Pokud jste nap\u0159\u00edklad v \u010c\u00edn\u011b na z\u00e1jezdu nebo pracovn\u011b, nebudete m\u00edt p\u0159\u00edstup ani na nejb\u011b\u017en\u011bj\u0161\u00ed webov\u00e9 str\u00e1nky, jako je Facebook nebo Netflix. Ty jsou v \u010c\u00edn\u011b zak\u00e1z\u00e1ny a ani samotn\u00e9 str\u00e1nky neumo\u017e\u0148uj\u00ed provoz p\u0159ich\u00e1zej\u00edc\u00ed z \u010c\u00edny.<\/p>\n\n\n\n<p>Pokud m\u00e1te spolehliv\u00e9 p\u0159ipojen\u00ed VPN, kter\u00e9 v\u00e1m umo\u017en\u00ed anonymn\u00ed p\u0159enos va\u0161\u00ed IP adresy z britsk\u00e9ho serveru, m\u016f\u017eete tato omezen\u00ed pom\u011brn\u011b snadno obej\u00edt. Tot\u00e9\u017e plat\u00ed nejen pro \u010c\u00ednu, ale i pro v\u011bt\u0161inu m\u00edst na sv\u011bt\u011b. To je jeden z hlavn\u00edch d\u016fvod\u016f, pro\u010d se \u010dast\u00ed cestovatel\u00e9 spol\u00e9haj\u00ed na p\u0159ipojen\u00ed VPN, aby byli na cest\u00e1ch ve spojen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VPN_and_Why_Do_I_Need_It_To_Keep_Your_Sensitive_Data_Safe_from_Cybercriminals\"><\/span>Co je VPN a pro\u010d ji pot\u0159ebuji: Aby byla va\u0161e citliv\u00e1 data v bezpe\u010d\u00ed p\u0159ed kyberzlo\u010dinci?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Firmy jsou zn\u00e1m\u00e9 t\u00edm, \u017ee neust\u00e1le t\u011b\u017e\u00ed z \u00fadaj\u016f sv\u00fdch z\u00e1kazn\u00edk\u016f, ale existuj\u00ed ur\u010dit\u00e9 (technick\u00e9) limity, kter\u00e9 jim dovoluj\u00ed leg\u00e1ln\u011b podnikat. Leg\u00e1ln\u00ed spole\u010dnosti v\u0161ak alespo\u0148 nekradou bal\u00ed\u010dky citliv\u00fdch osobn\u00edch a finan\u010dn\u00edch \u00fadaj\u016f za pochodu. To by byl trestn\u00fd \u010din, proto\u017ee mohou odhalit v\u0161echny citliv\u00e9 informace o u\u017eivateli, jako nap\u0159:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u010c\u00edsla kreditn\u00edch a debetn\u00edch karet.<\/li><li>\u010c\u00edsla CVV.<\/li><li>\u010c\u00edsla bankovn\u00edch \u00fa\u010dt\u016f.<\/li><li>Podrobnosti o transakci.<\/li><li>\u010c\u00edsla n\u00e1rodn\u00edho poji\u0161t\u011bn\u00ed.<\/li><li>U\u017eivatelsk\u00e1 jm\u00e9na (bankovnictv\u00ed, soci\u00e1ln\u00ed s\u00edt\u011b atd.)<\/li><li>Trval\u00e1 hesla a jednor\u00e1zov\u00e1 hesla (OTP).<\/li><li>E-mailov\u00e1 ID a e-maily.<\/li><li>Telefonn\u00ed \u010d\u00edsla, seznamy kontakt\u016f a textov\u00e9 zpr\u00e1vy.<\/li><\/ul>\n\n\n\n<p>V\u00fd\u0161e uveden\u00e9 p\u0159\u00edklady jsou jen p\u0159\u00edklady a potenci\u00e1l hackera ukr\u00e1st ne\u0161ifrovan\u00e9 datov\u00e9 pakety za b\u011bhu je t\u00e9m\u011b\u0159 neomezen\u00fd. Nejd\u011bsiv\u011bj\u0161\u00ed je, co mohou ud\u011blat pot\u00e9, co <a href=\"https:\/\/blog.lebara.co.uk\/cs\/what-to-do-if-your-phone-is-stolen\/\">ukraden\u00e9<\/a> n\u011bkolik hesel a u\u017eivatelsk\u00fdch jmen. Zlo\u010dinci je mohou vyu\u017e\u00edt k \u010demukoli, od kr\u00e1de\u017ee pen\u011bz a online identity u\u017eivatele a\u017e po pou\u017eit\u00ed t\u00e9\u017ee identity k proniknut\u00ed do kyberprostoru sv\u00e9ho zam\u011bstnavatele.<\/p>\n\n\n\n<p>Technicky se to m\u016f\u017ee st\u00e1t kdekoli, ale nej\u010dast\u011bji se to st\u00e1v\u00e1, kdy\u017e pou\u017e\u00edv\u00e1te p\u0159ipojen\u00ed Wi-Fi, kter\u00e9 nen\u00ed \u0159\u00e1dn\u011b zabezpe\u010den\u00e9 a \u0161ifrovan\u00e9. Ve\u0159ejn\u00e9 s\u00edt\u011b Wi-Fi jsou pr\u00e1v\u011b z tohoto d\u016fvodu nechvaln\u011b zn\u00e1m\u00e9, ale i soukrom\u00e1, \u0161patn\u011b chr\u00e1n\u011bn\u00e1 s\u00ed\u0165 Wi-Fi m\u016f\u017ee b\u00fdt n\u00e1chyln\u00e1 k pokus\u016fm o hackersk\u00fd \u00fatok.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_VPNs_and_How_Do_They_Protect\"><\/span>Co jsou s\u00edt\u011b VPN a jak chr\u00e1n\u00ed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Abyste p\u0159esn\u011b pochopili, co se stane, vezm\u011bte si citliv\u00fd pracovn\u00ed e-mail, kter\u00fd jste pr\u00e1v\u011b pou\u017eili k odesl\u00e1n\u00ed sv\u00e9mu \u0161\u00e9fovi prost\u0159ednictv\u00edm p\u0159ipojen\u00ed Wi-Fi v m\u00edstn\u00ed kav\u00e1rn\u011b. Pokud nejsou data dostate\u010dn\u011b za\u0161ifrov\u00e1na, m\u016f\u017ee i slu\u0161n\u00fd hacker zachytit tento e-mail pomoc\u00ed s\u00edt\u011b MITM (Man-in-the-Middle) a pot\u00e9 jej st\u00e1hnout jako datov\u00fd paket. Od t\u00e9 chv\u00edle jej pak m\u016f\u017ee pou\u017e\u00edt libovoln\u00fdm zp\u016fsobem.<\/p>\n\n\n\n<p>Pokud pou\u017e\u00edv\u00e1te renomovanou slu\u017ebu VPN, kter\u00e1 pou\u017e\u00edv\u00e1 nejmodern\u011bj\u0161\u00ed \u0161ifrov\u00e1n\u00ed, vid\u00ed hacker pouze nerozlu\u0161titeln\u00e9 \u0161ifry, jejich\u017e platnost po uplynut\u00ed stanoven\u00e9 doby vypr\u0161\u00ed. Nemohou tedy data \u010d\u00edst ani pou\u017e\u00edvat \u017e\u00e1dn\u00fdm mysliteln\u00fdm zp\u016fsobem. Skute\u010dnost, \u017ee data nelze vysledovat zp\u011bt k va\u0161\u00ed p\u016fvodn\u00ed IP adrese, je dal\u0161\u00ed p\u0159ek\u00e1\u017ekou, kter\u00e1 cel\u00fd proces zcela znemo\u017e\u0148uje.<\/p>\n\n\n\n<p>Existuj\u00ed zp\u016fsoby, jak p\u0159ekonat z\u00e1kladn\u00ed ochranu poskytovanou pr\u016fm\u011brn\u00fdm poskytovatelem VPN, ale nikdy to nen\u00ed snadn\u00e9. Krom\u011b toho i to nejz\u00e1kladn\u011bj\u0161\u00ed \u0161ifrov\u00e1n\u00ed VPN a anonymn\u00ed p\u0159id\u011blov\u00e1n\u00ed IP adres poskytuje lep\u0161\u00ed ochranu proti kr\u00e1de\u017ei dat ne\u017e zcela nechr\u00e1n\u011bn\u00e9 p\u0159ipojen\u00ed. Chcete-li dos\u00e1hnout nejlep\u0161\u00edho zabezpe\u010den\u00ed a v\u00fdsledk\u016f, vypn\u011bte p\u0159i pr\u00e1ci s citliv\u00fdmi informacemi rozd\u011blen\u00e9 tunelov\u00e1n\u00ed.<\/p>\n\n\n\n<p>N\u011bkte\u0159\u00ed poskytovatel\u00e9 slu\u017eeb VPN umo\u017e\u0148uj\u00ed sv\u00fdm u\u017eivatel\u016fm zvolit si dvoj\u00ed proxy server, aby dos\u00e1hli je\u0161t\u011b bezpe\u010dn\u011bj\u0161\u00edho a anonymn\u011bj\u0161\u00edho p\u0159\u00edstupu. Dvojit\u00fd proxy server je pokro\u010dil\u00e1 slu\u017eba VPN, p\u0159i kter\u00e9 se IP adresa u\u017eivatele odr\u00e1\u017e\u00ed od dvou r\u016fzn\u00fdch server\u016f na dvou r\u016fzn\u00fdch m\u00edstech. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f je tak t\u00e9m\u011b\u0159 nemo\u017en\u00e9, aby u\u017eivatele n\u011bkdo vystopoval nebo sledoval. Krom\u011b toho jsou nejlep\u0161\u00ed s\u00edt\u011b VPN vybaveny tak\u00e9 aktivn\u00ed ochranou proti spamu a trvalou funkc\u00ed kill <a href=\"https:\/\/blog.lebara.co.uk\/cs\/6-reasons-to-switch-to-lebara-in-2023\/\">p\u0159ep\u00edna\u010d<\/a> (ne s\u00ed\u0165 bez ochrany VPN), co\u017e zabra\u0148uje i n\u00e1hodn\u00fdm \u00fanik\u016fm DNS.<\/p>","protected":false},"excerpt":{"rendered":"<p>V\u011bt\u0161ina z n\u00e1s vid\u011bla, \u010detla a sly\u0161ela reklamy na slu\u017eby VPN na r\u016fzn\u00fdch platform\u00e1ch, ale stoj\u00ed za to si je p\u0159edplatit? A co je je\u0161t\u011b d\u016fle\u017eit\u011bj\u0161\u00ed, co je to VPN? Mohou VPN chr\u00e1nit na\u0161e soukrom\u00ed a identitu na internetu? Pokud ano, jak funguj\u00ed? Z\u016fsta\u0148te s n\u00e1mi a odpov\u011bzte na tyto ot\u00e1zky a n\u011bkolik dal\u0161\u00edch.....<\/p>\n<div><a class=\"read-more button-link\" href=\"https:\/\/blog.lebara.co.uk\/cs\/what-are-vpns-and-how-do-they-work\/\">P\u0159e\u010dt\u011bte si v\u00edce<\/a><\/div>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[46,45],"class_list":["post-667","post","type-post","status-publish","format-standard","hentry","category-lebara-news","tag-virtual-private-network","tag-vpn","clearfix",false],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/comments?post=667"}],"version-history":[{"count":1,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/667\/revisions"}],"predecessor-version":[{"id":669,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/posts\/667\/revisions\/669"}],"wp:attachment":[{"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/media?parent=667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/categories?post=667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/cs\/wp-json\/wp\/v2\/tags?post=667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}