Crepeau va ding nghiep dim ra phuang phip djnh tuyen nguan mgnh me (RSR), met giao thee djnh tuyen theo you au bito mot MANET c6 kha Ming cung cap cac g6i den dich twang img cue chimg ngay ca trong tan cong phtic top nhu cac dieu kien dOi lip. RSR sir Mpg the g6i FR (Fore-Runner), thong bao cho cac node trung gian trerTh tuyen chimg dang cher the dung dr lieu cy the trong cac khung thin gian (firth. Neu met node trung gian khong !Mon dirge bit Icy lutmg dfr lieu nio trong thiyi gian do kien, no se" thong bao cho node nguen. Bing each nay, cac lien ket yeti the node ce 14 (selfish) va/hotic cac node dee hai co the IA phat hi'e'n vi co lip.
3.2.4. Tin cong don d3p (Rushing)
Wit hinh thirc mei cue tan cong djnh tuyen duce goi la Mn cong din dip, no hoot dOng nhu met foal Mn cong DoS hieu qua chting lai tit a cac giao thee djnh tuyen theo yen au MANET. Tren thoc te, ke the the giao thee djnh tuyen bito mot (nhu SAODV vi AODV dugc bao mot vbi SUCV(Statistically Unique and Cryptographically Verifiable)) deu duce chi ra 11 de bi ton thuang lxzri cac cuec tan cling den dip.
Trong met giao thirc djnh tuyen adhoc theo yeu au dien hinh, met node co djnh kham phi met tuyen den dich de lam ngep lyt mpg moc tieu vii cac gei RREQ. De gift cho tae deng cue ng#p lut nhe 'that c6 the, cac node trong the giao thac djnh tuyen thong thuang chuyen tiep duy nit& met yeu au den node dAu tier 6 moi giai clop kham phi tuyen. Dk diem nay dm qua trinh kham phit tuyen dirge Mn cong din dip Igi dung. Vi do: trong tririmg hop Ulm phi tuyen cita DSR, node "S" va "D" thorn khao cac node nguin vi dich twang img, "M" la node
Phan Trung Nghia A08348
RREQ tit M RREQ tit S 4— 4— Glogibecicyeu
au agn muOn tit S
Oat
Wit 1441 be ac yeu
clu muon ;Si
Hinh 3.4: Topo mgng MANET khi "M" thirc hien tan cong clan deg,
node ling gieng caa "D". Neu cac tin RREQ a qui trinh kham phi nay duqc chuyen tiep bed "M" la cac tin dau tien den "G" va "H" (dieu nay la holm man co the), sau do bat ky tuyen nao duqc kham phi bed qui trinh kham phi tuyen nay se bao g6m mot bulk (hop) qua "M". MOt each don gian khi mot ling gi6ng caa node "D" la "G" hoOc "H" nhOn tin RREQ d6n dap tir Ice tan ding, no sb chuyen tiep yeu citu d6 mot mirth va kh8ng chuyen tiep bat ky tin RREQ nao khac tir qui trinh kham phi tuyen nay. Ngay ca khi the tin RREQ khong tan cong tir "S" den "G" va "H" a thbi diem sau, cac yeu cau hop le se bj loai bd. Ket qua la "S" kh8ng kham phi duqc bat ky tuyen nao co the sir dong hoc tuyen an toin ma khong co so tham gia caa ke tan cong.