Torojans inowanzoshandiswa kuendesa Kuparidzirwa Denial of Service (DDoS) kurwisana nemagadzirirwo akachengetedzwa, asi chii chinonzi DDoS kurwisa uye inoitwa sei?
Pamusoro payo yepamusoro-soro, re Distributed Denial of Service (DDoS) kurwisa kunokonzera chinangwa chemashoko nedheta, zvakadai kuti mhinduro kubva kune chinangwa ichi inogona kuderera kana kumira zvachose. Kuti pave nehuwandu hunokosha hwemotokari, kambani ye zombie kana bot emakombiyuta inowanzoshandiswa.
Zombies kana botnets makombiyuta akave akanganisa nevanopikisa, kazhinji kuburikidza nokushandiswa kweTrojans, zvichibvumira kuti zvirongwa izvi zvingagadziriswa zvive zvisingatarisirwi. Sekubatana, maitiro aya anoshandiswa kuti aite yakakwirira yepamudhara inoyerera inodiwa kuumba DDoS kurwisa.
Kushandiswa kwezvikwereti izvi zvinowanzotengeswa uye kushambadzirwa pakati pevanopikisa, saka nzira yakanganisa inogona kunge iri pasi pekutonga kwevatadzi vakawanda - mumwe nomumwe ane chinangwa chakasiyana mupfungwa. Vamwe vanopikisa vanogona kushandisa botnet se-spam-relay, vamwe vanoita sewebsite yekudzivirira ye code yakaipa, vamwe kuti vabate zvinyengeri zvekunyengedza, uye vamwe kune DDoS inotaurwa pamusoro apa.
Nzira dzakasiyana-siyana dzinogona kushandiswa pakuita kuti Kuparidzirwa Kuregererwa kweBasa kurwisa. Zviviri zvezvinowanikwa zvakawanda ndezvi HTTP GET zvikumbiro uye SYN Mafashamo. Imwe ye mienzaniso yakakurumbira zvikuru yeHTTP GET kushorwa yakabva kuWeDoom worm, iyo yakatarisa webhusaiti ye SCO.com. Kushandurwa kweGET kunoshanda sezvinoitwa nezita racho - rinotumira chikumbiro chepeji chaiyo (kazhinji peji yepamba) kune yakananga server. Mune mhaka yeWyDoom worm , 64 zvikumbiro zvakatumirwa chikamu chega chega kubva kune yose inotapukirwa. Ne makumi ezviuru zvemakombiyuta anofungidzirwa kuti ane utachiona neMyDoom, kurwisa kwakakurumidza kwakaratidza kuwandisa kune SCO.com, kuchigogodza iyo pasina kwemazuva akawanda.
A SYN Mafashamo anonyanya kubata ruoko. Kukurukurirana kwepaIndaneti kunoshandisa maoko matatu. Mutori wekutanga anotanga ne SYN, sevha inopindura ne SYN-ACK, uye mutengi ndiye anofanira kutarisana ne ACK. Kushandisa spoofed IP keroti, anorwisa anotumira SYN iyo inoguma mu SYN-ACK kutumirwa kukero isina kubvunza (uye kazhinji isiripo). Ivhavha iyo inomirira kuti mhinduro ye ACK isabatsire. Apo nhamba huru dzeizvi dzakasununguka SYN mapeti anotumirwa kune chinangwa, server yehupfumi inopera uye sevha inononoka kuS SYN Flood DDoS.
Mamwe maitiro akawanda eDDoS kurwisa anogona kutanga, kusanganisira UDP Fragment Mashamisi, ICMP Mafashamo, uye Ping of Death. Kuti uwane mamwe mashoko pamusoro pemhando dzekurwiswa kweDDoS, shanyira The Advanced Networking Management Lab (ANML) uye uongorore ravo Rwakabviswa Denial of Service Attacks (DDoS) Resources.
Onawo: Iko yako PC ye zombie here?