[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.mecops.cz\/nezabezpecenou-wi-fi-je-mozne-vyuzivat-i-na-velkou-vzdalenost\/#Article","mainEntityOfPage":"https:\/\/www.mecops.cz\/nezabezpecenou-wi-fi-je-mozne-vyuzivat-i-na-velkou-vzdalenost\/","headline":"Nezabezpe\u010denou Wi-Fi je mo\u017en\u00e9 vyu\u017e\u00edvat i na velkou vzd\u00e1lenost","name":"Nezabezpe\u010denou Wi-Fi je mo\u017en\u00e9 vyu\u017e\u00edvat i na velkou vzd\u00e1lenost","description":"V\u0161echny bezdr\u00e1tov\u00e9 technologie se \u0161\u00ed\u0159\u00ed prostorem a to a\u0165 u\u017e chceme nebo nechceme. \u0160\u00ed\u0159\u00ed se dokonce i bez ohledu na materi\u00e1l va\u0161eho zdiva. Je pravda, \u017ee jejich intenzita sl\u00e1bne v z\u00e1vislosti na vzd\u00e1lenosti od zdroje. Princip p\u0159ipojen\u00ed do vzd\u00e1len\u00e9 Wi-Fi s\u00edt\u011b ale nic nebr\u00e1n\u00ed tomu, aby se kdokoliv se sm\u011brovou ant\u00e9nou na tuto s\u00ed\u0165 p\u0159ipojil. […]","datePublished":"2018-08-10","dateModified":"2023-04-29","author":{"@type":"Person","@id":"https:\/\/www.mecops.cz\/author\/#Person","name":"mecops.cz\n","url":"https:\/\/www.mecops.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/0dc285cbe86eecc8073f119fcb2e2c7032b51533f5bb47611c7d4a598558b8b7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0dc285cbe86eecc8073f119fcb2e2c7032b51533f5bb47611c7d4a598558b8b7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"mecops.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.mecops.cz\/wp-content\/uploads\/img_a322291_w2040_t1533844407.png","url":"https:\/\/www.mecops.cz\/wp-content\/uploads\/img_a322291_w2040_t1533844407.png","height":0,"width":0},"url":"https:\/\/www.mecops.cz\/nezabezpecenou-wi-fi-je-mozne-vyuzivat-i-na-velkou-vzdalenost\/","about":["Web"],"wordCount":422,"articleBody":"V\u0161echny bezdr\u00e1tov\u00e9 technologie se \u0161\u00ed\u0159\u00ed prostorem a to a\u0165 u\u017e chceme nebo nechceme. \u0160\u00ed\u0159\u00ed se dokonce i bez ohledu na materi\u00e1l va\u0161eho zdiva. Je pravda, \u017ee jejich intenzita sl\u00e1bne v z\u00e1vislosti na vzd\u00e1lenosti od zdroje. Princip p\u0159ipojen\u00ed do vzd\u00e1len\u00e9 Wi-Fi s\u00edt\u011b ale nic nebr\u00e1n\u00ed tomu, aby se kdokoliv se sm\u011brovou ant\u00e9nou na tuto s\u00ed\u0165 p\u0159ipojil. Ve v\u00fdsledku se tedy na va\u0161i Wi-Fi s\u00ed\u0165 m\u016f\u017ee p\u0159ipojit \u00fapln\u011b ka\u017ed\u00fd, pokud nen\u00ed zaheslov\u00e1na. I pokud m\u00e1 nezabezpe\u010den\u00e1 Wi-Fi s\u00ed\u0165 slab\u00fd v\u00fdkon a to i do vzd\u00e1lenosti dvaceti metr\u016f, se sm\u011brovou ant\u00e9nou se doty\u010dn\u00fd zvl\u00e1dne v pohod\u011b p\u0159ipojit a to i ze vzd\u00e1lenosti n\u011bkolika kilometr\u016f. Ka\u017ed\u00e1 Wi-Fi s\u00ed\u0165 mus\u00ed b\u00fdt zabezpe\u010den\u00e1. Zabezpe\u010den\u00ed se prov\u00e1d\u00ed nej\u010dast\u011bji dv\u011bma zp\u016fsoby. Jeden z nich je autentifikace, co\u017e je vlastn\u011b autorizovan\u00fd p\u0159\u00edstup pouze pro opr\u00e1vn\u011bn\u00e9 u\u017eivatele anebo \u0161ifrov\u00e1n\u00edm (k\u00f3dov\u00e1n\u00edm p\u0159enesen\u00fdch dat). \u0160ifrov\u00e1n\u00ed je zaj\u00edmav\u00e9 v tom, \u017ee se vyv\u00edj\u00ed u\u017e p\u011bknou \u0159adu let a ne v\u0161echna star\u0161\u00ed za\u0159\u00edzen\u00ed jsou bezpe\u010dn\u00e1 (dostate\u010dn\u011b zabezpe\u010den\u00e1). Nejspolehliv\u011bj\u0161\u00ed je zabezpe\u010den\u00ed ov\u011b\u0159en\u00edm MAC adresy. Tento zp\u016fsob se tak\u00e9 pou\u017e\u00edv\u00e1 velmi \u010dasto. Wi-Fi m\u00e1 p\u0159\u00edstupov\u00fd bod a k dispozici soupisku povolen\u00fdch hardwarov\u00fdch adres v\u0161ech za\u0159\u00edzen\u00ed. Podobn\u011b lze dokonce n\u011bkter\u00e9 stanice p\u0159\u00edmo zablokovat a t\u00edm se ocitnou na blacklistu. Mo\u017en\u00e1 u\u017e jste n\u011bkdy sly\u0161eli o \u0161ifrov\u00e1n\u00ed typu WEP, WPA nebo WPA2. O nich si nyn\u00ed n\u011bco m\u00e1lo pov\u00edme. \u0160ifrov\u00e1n\u00ed WEP je jeden z t\u011bch nejstar\u0161\u00edch zp\u016fsob\u016f zabezpe\u010den\u00ed, kde je velk\u00e9 nebezpe\u010d\u00ed prolomen\u00ed p\u0159\u00edstupu. Kl\u00ed\u010de zde pracuj\u00ed na principu jednoduch\u00e9ho \u0161ifrov\u00e1n\u00ed a kl\u00ed\u010d je jednodu\u0161e odvoditeln\u00fd za pomoci speci\u00e1ln\u00edho softwaru. Co se t\u00fdk\u00e1 WPA, to je tzv. Wi-Fi Protected Access. Ten speci\u00e1ln\u011b pozm\u011b\u0148uje kl\u00ed\u010de WEP a to d\u00edky programov\u00e9mu rozhran\u00ed. V\u00fdhodou je vyu\u017eitelnost u star\u0161\u00edch typ\u016f technologi\u00ed, kter\u00e9 pou\u017e\u00edvaj\u00ed pouze WEP. Mo\u017en\u00e1 v\u00e1s napadne, \u017ee WPA2 je nov\u011bj\u0161\u00ed verze WPA. Verze 2 stav\u00ed na d\u016fkladn\u011bj\u0161\u00edm zp\u016fsobu \u0161ifrov\u00e1n\u00ed a pou\u017e\u00edv\u00e1 se hlavn\u011b v modern\u00edch Wi-Fi prvc\u00edch. Klade ale mnohem vy\u0161\u0161\u00ed n\u00e1roky na po\u010detn\u00ed v\u00fdkon p\u0159\u00edstroje.                                                                                                                                                                                                                                                                                                                                                                                        4.5\/5 - (4 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Nezabezpe\u010denou Wi-Fi je mo\u017en\u00e9 vyu\u017e\u00edvat i na velkou vzd\u00e1lenost","item":"https:\/\/www.mecops.cz\/nezabezpecenou-wi-fi-je-mozne-vyuzivat-i-na-velkou-vzdalenost\/#breadcrumbitem"}]}]