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Semalt: Likarolo tsa ho lahla tšebeletso (DoS) Liteko

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Litlhaselo tsa DoS ke boiteko bo kotsi ba ho etsa hore litšebeletso tsa hau kapa thepa ea marang-rang ha li fumanoe ka nakoana kapa ka ho sa feleng. Ba Hackers ba finyella mosebetsi ona ka ho etsa litšebeletso tse fapaneng. Ka lebaka leo, ba ka emisa kapa ba sitisa litlaleho tsa hau bophelo bohle. Hangata litlhaselo tsa Tšebeletso ea Tšebeletso li kenyelletsa mefuta e fapaneng ea mechine e sebelisetsoang ho lebisa lisebelisoa tse ncha tsa k'homphieutha le lisebelisoa tsa thepa. Mechine ena e baka tsietsing e fapaneng le ho phallela mehloli ea sepheo ka litlhahiso tse tsoelang pele, lipotso le melaetsa e sa batleheng. Litlhaselo tsa DoS li ka ama lisebelisoa tsa hau haholo 'me li atisa ho bolaoa joaloka botnets.

Andrew Dyhan, e leng Semalt Motsamaisi ea Atlehileng oa bareki, o re litlhaselo tsa DoS li arotsoe likarolo tse peli tse fapaneng:

1. Tlhaselo ea DoS tlhaselo

Mofuta ona oa tlhaselo ea DoS e akarelletsa meroallo ea HTTP, tlhaselo ea zero-zay kapa tlhaselo e liehang (Slowloris kapa RUDY). Tlhaselo ena ea DoS e ikemiseditse ho baka mathata ka palo e kholo ea mekhoa ea ts'ebetso, mekhoa ea puisano le lik'homphieutha. Li bonahala li se na molato ebile li le molaong, 'me likōpo li shebahala li tšepahala, empa boholo ba tsona bo lekanyetsoa ka mokhoa oa likōpo ka motsotsoana..Tlhaselo ena ea DoS e ikemiselitse ho fokotsa likarolo tse hlalositsoeng tse nang le likōpo tse ngata, tse bakang mohopolo o phahameng le ho sebelisoa ha CPU. E tla qetella e fe kapa e senya lik'homphieutha tsa hau.

2. Inthanete ea DoS tlhaselo

Tlhaselo ea DoS ea marang-rang e na le moroallo oa UDP, moroallo oa SYN, NTP matlafatsang, DNS amplification, SSDP matlafatso le ho arohana ha IP. Tsena ke tsona li-barrage tse phahameng 'me li lekantsoe ka gigabits ka motsotsoana. Li boetse li lekanngoa ka mokhoa oa lipakete ka motsotsoana 'me li lula li bolaoa ke lik'homphieutha tsa zombie kapa botnets.

Litlhaselo tsa DoS li jala joang?

Ba-cybercriminals ba batla ho tšoaetsa le ho laola makholo a likete, esita le li-smartphone tsa limilione le lik'homphieutha. Ba batla ho ba masters a li-zombies kapa marang-rang a botnet le ho hlasela litlhaselo tsa Distributed Denial of Service (DDoS), lipapatso tse kholo tsa spam, le litlhaselo tse ling tsa cyber. Maemong a mang, ba-cybercriminals ba theha marang-rang a li-zombies le mechine e nang le tšoaetso ea ho fumana marang-rang a macha le lisebelisoa, ebang ke thekiso e tobileng kapa mohahong oa khiriso. Ba-spammers ba ka 'na ba hira' me ba reka marang-rang ho etsa lik'hamphani tse kholo tsa spam.

Botnets ea DoS le lisebelisoa tsa bona:

Moetsi oa botnet o bitsoa bot botter kapa botmaster. O laola botsitso ba DoS ho tloha libakeng tse hōle mme o ba fa mesebetsi e itseng letsatsi le leng le le leng. Ba-botmaster ba buisana le seva sa DoS ka litsela tse patiloeng tse kang li-protocol, li-websites tsa HTTP le marang-rang a IRC. O ka boela a sebelisa lits'ebeletso tsa mecha ea litaba joaloka Twitter, Facebook, le LinkedIn ho kopana le ba bang.

Lesebelisoa tsa botnet li ka buisana kapa li sebelisana le marang-rang a DoS le lisebelisoa tse ling tsa botnet, ho theha marang-rang a atlehileng a P2P a laoloang ke litsebi tse le mong kapa tse ngata tsa bot. E bolela hore mang kapa mang a ke ke a fana ka litaelo ho marang-rang a DoS ha litlhaselo li e-na le tšimoloho e fapaneng 'me ba soma feela ba tseba ka tsoalo ea bona. Mabotho a DoS a lula a ipatile ka mor'a litšebeletso tse sa tloaelehang 'me a ikhakanya ho fa bareki ba bona lisebelisoa tsa boemo bo phahameng, tseo ha e le hantle li se nang thuso.

November 29, 2017
Semalt: Likarolo tsa ho lahla tšebeletso (DoS) Liteko
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