{"id":2598,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/jak-funguji-poskytovatele-internetovych-sluzeb-a-comprehensive-guide-to-understanding-internet-service-providers\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"jak-funguji-poskytovatele-internetovych-sluzeb-a-comprehensive-guide-to-understanding-internet-service-providers","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/jak-funguji-poskytovatele-internetovych-sluzeb-a-comprehensive-guide-to-understanding-internet-service-providers\/","title":{"rendered":"Jak funguj\u00ed poskytovatel\u00e9 internetov\u00fdch slu\u017eeb. A Comprehensive Guide to Understanding Internet Service Providers"},"content":{"rendered":"
P\u0159edstavte se: N\u00e1\u0161 p\u0159\u00edstup k obrovsk\u00e9mu internetu hraje v\u00fdznamnou roli v pr\u00e1ci poskytovatel\u016f internetov\u00fdch slu\u017eeb (ISP). Je v\u0161ak mo\u017en\u00e9, \u017ee mnoho lid\u00ed nev\u00ed, jak poskytovatel\u00e9 internetov\u00fdch slu\u017eeb funguj\u00ed a jak\u00e9 syst\u00e9my je podporuj\u00ed. V tomto p\u0159\u00edsp\u011bvku se budeme zab\u00fdvat vnit\u0159n\u00edm fungov\u00e1n\u00edm poskytovatel\u016f internetov\u00fdch slu\u017eeb, v\u010detn\u011b toho, jak poskytuj\u00ed internet, reguluj\u00ed rychlost internetu, zpracov\u00e1vaj\u00ed data u\u017eivatel\u016f a komunikuj\u00ed s internetem. Jak poskytovatel\u00e9 internetov\u00fdch slu\u017eeb poskytuj\u00ed internetov\u00e9 slu\u017eby? Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb maj\u00ed na starosti poskytov\u00e1n\u00ed p\u0159\u00edstupu k internetu jednotliv\u00fdm u\u017eivatel\u016fm i firm\u00e1m. Za t\u00edmto \u00fa\u010delem buduj\u00ed s\u00ed\u0165ovou infrastrukturu, kter\u00e1 propojuje jejich klienty s celosv\u011btov\u00fdm internetem. Poskytovatel\u00e9 internetu pou\u017e\u00edvaj\u00ed k p\u0159enosu datov\u00fdch sign\u00e1l\u016f mezi svou s\u00edt\u00ed a va\u0161imi za\u0159\u00edzen\u00edmi r\u016fzn\u00e9 technologie, v\u010detn\u011b optick\u00fdch kabel\u016f, m\u011bd\u011bn\u00fdch linek a bezdr\u00e1tov\u00fdch p\u0159ipojen\u00ed. <\/p>\n
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Datov\u00e1 centra a m\u00edsta p\u0159\u00edtomnosti (PoP) jsou z\u00e1kladn\u00edmi sou\u010d\u00e1stmi infrastruktury ISP. V datov\u00fdch centrech jsou um\u00edst\u011bny servery a dal\u0161\u00ed n\u00e1stroje pot\u0159ebn\u00e9 k ukl\u00e1d\u00e1n\u00ed a p\u0159enosu dat. PoP slou\u017e\u00ed jako region\u00e1ln\u00ed uzly, kter\u00e9 propojuj\u00ed u\u017eivatele v ur\u010dit\u00e9 oblasti se s\u00edt\u00ed ISP. Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb mohou prost\u0159ednictv\u00edm t\u011bchto propojen\u00fdch syst\u00e9m\u016f komunikovat s ostatn\u00edmi poskytovateli internetov\u00fdch slu\u017eeb, poskytovateli obsahu a dal\u0161\u00edmi s\u00edt\u011bmi, co\u017e umo\u017e\u0148uje celosv\u011btov\u00e9 p\u0159ipojen\u00ed. Jak\u00e9 mechanismy pou\u017e\u00edvaj\u00ed poskytovatel\u00e9 internetu k regulaci rychlosti internetu? Prost\u0159ednictv\u00edm postupu naz\u00fdvan\u00e9ho traffic shaping nebo bandwidth management maj\u00ed poskytovatel\u00e9 internetu pravomoc regulovat rychlost va\u0161eho internetov\u00e9ho p\u0159ipojen\u00ed. Tato metoda umo\u017e\u0148uje poskytovatel\u016fm internetu rozd\u011blovat s\u00ed\u0165ov\u00e9 zdroje a d\u00e1vat n\u011bkter\u00fdm typ\u016fm internetov\u00e9ho provozu nejvy\u0161\u0161\u00ed prioritu. <\/p>\n

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Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb obvykle poskytuj\u00ed r\u016fzn\u00e9 internetov\u00e9 slu\u017eby s n\u011bkolika \u00farovn\u011bmi rychlosti. Poskytovatel internetov\u00e9ho p\u0159ipojen\u00ed p\u0159id\u011bl\u00ed ur\u010dit\u00e9 procento sv\u00fdch s\u00ed\u0165ov\u00fdch zdroj\u016f, kdy\u017e se p\u0159ihl\u00e1s\u00edte k ur\u010dit\u00e9mu tarifu, aby byla zachov\u00e1na deklarovan\u00e1 rychlost. Aby zajistili spravedliv\u00e9 rozd\u011blen\u00ed zdroj\u016f mezi sv\u00e9 z\u00e1kazn\u00edky, mohou poskytovatel\u00e9 internetov\u00fdch slu\u017eeb p\u0159esto v obdob\u00edch velk\u00e9ho p\u0159et\u00ed\u017een\u00ed s\u00edt\u011b pou\u017e\u00edvat do\u010dasn\u00e9 strategie \u0159\u00edzen\u00ed provozu. To m\u016f\u017ee zp\u016fsobit m\u00edrn\u00e9 zpomalen\u00ed rychlosti internetu v obdob\u00edch vysok\u00e9ho vyu\u017eit\u00ed. <\/p>\n

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Je d\u016fle\u017eit\u00e9 m\u00edt na pam\u011bti, \u017ee z\u00e1kony o s\u00ed\u0165ov\u00e9 neutralit\u011b v n\u011bkter\u00fdch oblastech zakazuj\u00ed poskytovatel\u016fm internetu z\u00e1m\u011brn\u011b zpomalovat nebo up\u0159ednost\u0148ovat n\u011bkter\u00e9 p\u0159enosy na z\u00e1klad\u011b jejich zdroje nebo obsahu. V\u0161ichni u\u017eivatel\u00e9 by d\u00edky t\u011bmto pravidl\u016fm m\u011bli m\u00edt i nad\u00e1le k dispozici svobodn\u00fd a otev\u0159en\u00fd internet. Maj\u00ed poskytovatel\u00e9 internetov\u00fdch slu\u017eeb p\u0159\u00edstup k vyhled\u00e1v\u00e1n\u00ed, kter\u00e9 prov\u00e1d\u00edte? Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb jsou technicky schopni sledovat a zaznamen\u00e1vat v\u0161echny va\u0161e online aktivity, v\u010detn\u011b nav\u0161t\u00edven\u00fdch webov\u00fdch str\u00e1nek, vyhled\u00e1v\u00e1n\u00ed a dal\u0161\u00edch. O tom, zda tak skute\u010dn\u011b \u010din\u00ed, v\u0161ak rozhoduje \u0159ada prom\u011bnn\u00fdch, jako jsou z\u00e1konn\u00e9 po\u017eadavky, z\u00e1kony na ochranu soukrom\u00ed a mor\u00e1ln\u00ed hlediska. <\/p>\n

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Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb jsou v n\u011bkter\u00fdch zem\u00edch ze z\u00e1kona povinni uchov\u00e1vat \u00fadaje o u\u017eivatel\u00edch po ur\u010ditou dobu. Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb jsou nicm\u00e9n\u011b na mnoha m\u00edstech omezeni z\u00e1kony o ochran\u011b osobn\u00edch \u00fadaj\u016f v tom, aby sd\u00edleli nebo prod\u00e1vali va\u0161e osobn\u00ed \u00fadaje bez va\u0161eho souhlasu. <\/p>\n

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Mnoho u\u017eivatel\u016f se rozhodlo pou\u017e\u00edvat virtu\u00e1ln\u00ed priv\u00e1tn\u00ed s\u00edt\u011b (VPN) nebo \u0161ifrovan\u00e1 p\u0159ipojen\u00ed, aby jejich online aktivity nebyly sledov\u00e1ny poskytovateli internetov\u00fdch slu\u017eeb, a zv\u00fd\u0161ili tak sv\u00e9 soukrom\u00ed. Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb nejsou schopni zjistit p\u0159esn\u00fd obsah va\u0161eho internetov\u00e9ho provozu, proto\u017ee data odes\u00edlan\u00e1 mezi va\u0161\u00edm za\u0159\u00edzen\u00edm a serverem VPN jsou \u0161ifrovan\u00e1. Vlastn\u00ed poskytovatel\u00e9 internetu skute\u010dn\u011b internet? Internet nen\u00ed ve vlastnictv\u00ed poskytovatel\u016f internetov\u00fdch slu\u017eeb, ne. Internet tvo\u0159\u00ed glob\u00e1ln\u00ed s\u00ed\u0165 vz\u00e1jemn\u011b propojen\u00fdch s\u00edt\u00ed, v\u010detn\u011b poskytovatel\u016f internetov\u00fdch slu\u017eeb, poskytovatel\u016f obsahu, vzd\u011bl\u00e1vac\u00edch instituc\u00ed a vl\u00e1d. Infrastrukturu a p\u0159\u00edstupov\u00e9 body pot\u0159ebn\u00e9 pro p\u0159ipojen\u00ed z\u00e1kazn\u00edk\u016f k internetu poskytuj\u00ed poskytovatel\u00e9 internetov\u00fdch slu\u017eeb, kte\u0159\u00ed slou\u017e\u00ed jako zprost\u0159edkovatel\u00e9. I kdy\u017e ur\u010dit\u00e9 segmenty s\u00edt\u011b mohou b\u00fdt pod kontrolou jednoho poskytovatele internetov\u00fdch slu\u017eeb, propojen\u00ed a v\u00fdm\u011bna dat s ostatn\u00edmi poskytovateli internetov\u00fdch slu\u017eeb jsou nezbytn\u00e9 pro umo\u017en\u011bn\u00ed glob\u00e1ln\u00edho p\u0159\u00edstupu. Vz\u00e1jemn\u00e9 dohody a internetov\u00e9 v\u00fdm\u011bnn\u00e9 body (IXP) umo\u017e\u0148uj\u00ed toto propojen\u00ed a zaru\u010duj\u00ed voln\u00fd pohyb dat mezi r\u016fzn\u00fdmi s\u00edt\u011bmi. <\/p>\n

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Shrnut\u00ed: <\/p>\n

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Infrastrukturu a p\u0159ipojen\u00ed, kter\u00e9 u\u017eivatel\u00e9 pot\u0159ebuj\u00ed k p\u0159\u00edstupu do online sv\u011bta a k pohybu v n\u011bm, zaji\u0161\u0165uj\u00ed poskytovatel\u00e9 internetov\u00fdch slu\u017eeb, kte\u0159\u00ed funguj\u00ed jako str\u00e1\u017eci p\u0159\u00edstupu k internetu. U\u017eivatel\u00e9 se mohou kvalifikovan\u011bji rozhodovat o sv\u00fdch internetov\u00fdch slu\u017eb\u00e1ch a p\u0159ijmout opat\u0159en\u00ed na ochranu sv\u00e9ho soukrom\u00ed a bezpe\u010dnosti, pokud se dozv\u011bd\u00ed, jak poskytovatel\u00e9 internetu nab\u00edzej\u00ed internet, kontroluj\u00ed jeho rychlost, nakl\u00e1daj\u00ed s u\u017eivatelsk\u00fdmi daty a jak souvis\u00ed se samotn\u00fdm internetem.<\/p><\/div>\n

\n
FAQ<\/div>\n
\n
Jak poskytovatel\u00e9 internetov\u00fdch slu\u017eeb v\u011bd\u00ed, kam maj\u00ed pos\u00edlat pakety?<\/div>\n

Poskytovatel\u00e9 internetov\u00e9ho p\u0159ipojen\u00ed neboli poskytovatel\u00e9 internetov\u00fdch slu\u017eeb pou\u017e\u00edvaj\u00ed kombinaci sm\u011brovac\u00edch protokol\u016f a s\u00ed\u0165ov\u00e9 architektury, aby ur\u010dili, kam maj\u00ed pakety doru\u010dit. Zdrojov\u00e9 a c\u00edlov\u00e9 IP adresy se pou\u017e\u00edvaj\u00ed k adresov\u00e1n\u00ed datov\u00fdch paket\u016f p\u0159i jejich p\u0159enosu p\u0159es internet. <\/p>\n

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Sm\u011brova\u010de a p\u0159ep\u00edna\u010de, kter\u00e9 tvo\u0159\u00ed s\u00ed\u0165ovou architekturu ISP, maj\u00ed na starosti sm\u011brov\u00e1n\u00ed paket\u016f. Pro komunikaci sm\u011brovac\u00edch dat s ostatn\u00edmi poskytovateli internetov\u00fdch slu\u017eeb a vytv\u00e1\u0159en\u00ed sm\u011brovac\u00ed tabulky pou\u017e\u00edvaj\u00ed tato s\u00ed\u0165ov\u00e1 za\u0159\u00edzen\u00ed sm\u011brovac\u00ed protokoly, nap\u0159\u00edklad protokol BGP (Border Gateway Protocol). <\/p>\n

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Poskytovatel internetov\u00fdch slu\u017eeb se p\u0159i p\u0159\u00edjmu paketu d\u00edv\u00e1 na jeho c\u00edlovou IP adresu. Na z\u00e1klad\u011b sv\u00e9 sm\u011brovac\u00ed datab\u00e1ze vybere poskytovatel internetu optim\u00e1ln\u00ed trasu nebo dal\u0161\u00ed skok, kter\u00fdm se paket dostane do sv\u00e9ho c\u00edle. Tento postup zahrnuje v\u00fdb\u011br nejlep\u0161\u00ed trasy porovn\u00e1n\u00edm c\u00edlov\u00e9 IP adresy se z\u00e1znamy ve sm\u011brovac\u00ed tabulce. <\/p>\n

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Ve sm\u011brovac\u00ed tabulce jsou obsa\u017eeny informace o v\u00edce s\u00ed\u0165ov\u00fdch c\u00edlech a souvisej\u00edc\u00edm dal\u0161\u00edm skoku. Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb si pravideln\u011b vym\u011b\u0148uj\u00ed sm\u011brovac\u00ed \u00fadaje, \u010d\u00edm\u017e zaji\u0161\u0165uj\u00ed aktu\u00e1lnost sv\u00fdch sm\u011brovac\u00edch tabulek. D\u00edky tomu mohou b\u00fdt pakety efektivn\u011b sm\u011brov\u00e1ny p\u0159es mnoho poskytovatel\u016f internetov\u00fdch slu\u017eeb a s\u00edt\u00ed, aby se dostaly na zam\u00fd\u0161len\u00e9 m\u00edsto. <\/p>\n

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Poskytovatel\u00e9 internetov\u00fdch slu\u017eeb tak\u00e9 pou\u017e\u00edvaj\u00ed metodu p\u0159ekladu s\u00ed\u0165ov\u00fdch adres (NAT) pro spr\u00e1vu a uchov\u00e1n\u00ed IP adres. NAT umo\u017e\u0148uje za\u0159\u00edzen\u00edm m\u00edstn\u00ed s\u00edt\u011b sd\u00edlet mezi sebou jedinou ve\u0159ejnou IP adresu. Poskytovatel internetov\u00fdch slu\u017eeb pou\u017e\u00edv\u00e1 NAT k p\u0159ekladu soukrom\u00fdch IP adres za\u0159\u00edzen\u00ed v s\u00edti na ve\u0159ejnou IP adresu p\u0159i odes\u00edl\u00e1n\u00ed paket\u016f do internetu. <\/p>\n

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Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee poskytovatel\u00e9 internetov\u00fdch slu\u017eeb pou\u017e\u00edvaj\u00ed s\u00ed\u0165ovou architekturu a sm\u011brovac\u00ed protokoly k v\u00fdb\u011bru optim\u00e1ln\u00ed cesty pro pakety na z\u00e1klad\u011b c\u00edlov\u00e9 IP adresy. Aby mohli efektivn\u011b sm\u011brovat pakety p\u0159es internet, vedou sm\u011brovac\u00ed tabulky, sd\u00edlej\u00ed sm\u011brovac\u00ed informace s ostatn\u00edmi poskytovateli internetov\u00fdch slu\u017eeb a pou\u017e\u00edvaj\u00ed strategie, jako je NAT.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

P\u0159edstavte se: N\u00e1\u0161 p\u0159\u00edstup k obrovsk\u00e9mu internetu hraje v\u00fdznamnou roli v pr\u00e1ci poskytovatel\u016f internetov\u00fdch slu\u017eeb (ISP). Je v\u0161ak mo\u017en\u00e9, \u017ee mnoho lid\u00ed nev\u00ed, jak poskytovatel\u00e9 internetov\u00fdch slu\u017eeb funguj\u00ed a jak\u00e9 syst\u00e9my je podporuj\u00ed. V tomto p\u0159\u00edsp\u011bvku se budeme zab\u00fdvat vnit\u0159n\u00edm fungov\u00e1n\u00edm poskytovatel\u016f internetov\u00fdch slu\u017eeb, v\u010detn\u011b toho, jak poskytuj\u00ed internet, reguluj\u00ed rychlost internetu, zpracov\u00e1vaj\u00ed data u\u017eivatel\u016f … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":319,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-2598","post","type-post","status-publish","format-standard","hentry","category-networking"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/2598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/users\/319"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=2598"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/2598\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=2598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=2598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=2598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}