{"id":41973,"date":"2017-09-13T00:00:00","date_gmt":"2017-09-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/zashhita-servera-ot-ddos-atak"},"modified":"2020-02-18T13:44:45","modified_gmt":"2020-02-18T10:44:45","slug":"zashhita-servera-ot-ddos-atak","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/zashhita-ot-ddos-atak\/zashhita-servera-ot-ddos-atak","title":{"rendered":"Beskyt serveren mod DDoS-angreb","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Hvis din hjemmeside er politisk, accepterer betalinger via internettet, eller hvis du driver en profitabel virksomhed \u2013 DDoS-angreb<\/strong> kan finde sted n\u00e5r som helst. DDoS st\u00e5r for 'Distributed Denial of Service' p\u00e5 engelsk. Og beskyttelse af webservere mod DDoS-angreb<\/a> er den vigtigste del af kvalitetshosting.<\/p>\n

Kort sagt, DDoS-angreb<\/strong> handler det om at overbelaste serveren, s\u00e5 den ikke kan betjene bes\u00f8gende. Hackere kaprer et computernetv\u00e6rk og sender en enorm m\u00e6ngde tomme foresp\u00f8rgsler til den \u00f8nskede server. St\u00f8rrelsen af botnettet kan v\u00e6re alt fra flere dusin til flere hundrede tusinde computere. Serveren er tvunget til at svare p\u00e5 alle foresp\u00f8rgsler, kan ikke h\u00e5ndtere belastningen og g\u00e5r ned.<\/p>\n

\"\"<\/p>\n

Systemer til beskyttelse af servere mod DDoS-angreb<\/h2>\n

Man kan bek\u00e6mpe DDoS-angreb<\/strong> med hardwaremetoder. For dette tilsluttes brandmure til serverudstyret, som beslutter, om trafikken skal tillades at forts\u00e6tte. Der er algoritmer indbygget i deres firmware, som identificerer langt st\u00f8rstedelen af angrebene. Hvis angrebskraften ikke overstiger de angivne gr\u00e6nser i certificeringen, vil udstyret fungere normalt. Ulempen er den begr\u00e6nsede b\u00e5ndbredde og vanskeligheden ved at omfordele trafikken.<\/p>\n

En mere popul\u00e6r tilgang<\/strong> er brugen af et filtrerende netv\u00e6rk. Da trafikken genereres af botnet, er brugen af mange computere i kampen mod tom trafik den mest optimale l\u00f8sning. Netv\u00e6rket tager trafikken til sig, filtrerer den og kun verificeret og kvalitets trafik fra rigtige brugere n\u00e5r frem til den m\u00e5lserver. Den vigtigste fordel ved denne tilgang er muligheden for fleksibelt at tilpasse beskyttelsen. Avancerede hackere har allerede l\u00e6rt at maskere ondsindet trafik som trafik fra almindelige bes\u00f8gende. Kun en erfaren informationssikkerhedsspecialist kan genkende d\u00e5rlig trafik.<\/p>\n

For at beskytte mod s\u00e5danne angreb skaber udbydere og hostingfirmaer netv\u00e6rk, der lader trafikken passere igennem og filtrerer den. I yderste konsekvens er det muligt at tilslutte sig tredjeparts trafikrensningsnoder.<\/p>\n

Netv\u00e6rksarkitekturen best\u00e5r af tre lag: rutning, paketbehandling og applikationslag. P\u00e5 rutningsniveauet fordeles trafikken j\u00e6vnt mellem netv\u00e6rkselementerne takket v\u00e6re superkraftfulde routere. P\u00e5 paketbehandlingsniveauet filtrerer flere gensidigt reserverede enheder den indkommende trafik ved hj\u00e6lp af specielle algoritmer. P\u00e5 applikationsniveauet sker kryptering, dekryptering og behandling af anmodninger. Ved behov kan man l\u00e6se rapporter om angrebskraft og varighed samt rapporter om oprydning.<\/p>\n

Virksomheden ProHoster vil beskytte din hjemmeside<\/a> mod DDoS-angreb med en kapacitet p\u00e5 op til 1,2 Tb\/s. For hver type server oprettes grundl\u00e6ggende skabeloner til beskyttelse mod simple DDoS-angreb som standard.<\/em> Ved sp\u00f8rgsm\u00e5l om beskyttelse af webservere mod DDoS-angreb<\/a> kontakt vores tekniske support. Vent ikke p\u00e5, at din server falder \u2013 beskyt den allerede i dag!<\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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