{"id":10151,"date":"2023-04-05T21:15:17","date_gmt":"2023-04-05T14:15:17","guid":{"rendered":""},"modified":"2024-06-27T11:03:31","modified_gmt":"2024-06-27T04:03:31","slug":"tan-cong-ddos-va-dos-dau-la-su-khac-biet","status":"publish","type":"post","link":"https:\/\/vnso.vn\/en\/tan-cong-ddos-va-dos-dau-la-su-khac-biet\/","title":{"rendered":"T\u1ea5n C\u00f4ng DDoS v\u00e0 DoS \u0110\u00e2u L\u00e0 S\u1ef1 Kh\u00e1c Bi\u1ec7t"},"content":{"rendered":"

T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h2>\n

Ng\u00e0nh CNTT g\u1ea7n \u0111\u00e2y \u0111\u00e3 ch\u1ee9ng ki\u1ebfn \u200b\u200bs\u1ef1 gia t\u0103ng \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS). Nhi\u1ec1u n\u0103m tr\u01b0\u1edbc, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u01b0\u1ee3c coi l\u00e0 nh\u1eefng m\u1ed1i phi\u1ec1n to\u00e1i nh\u1ecf do nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng m\u1edbi l\u00e0m th\u1ef1c hi\u1ec7n cho vui v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 d\u00e0ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u ch\u00fang. R\u1ea5t ti\u1ebfc, t\u00ecnh tr\u1ea1ng \u0111\u00f3 kh\u00f4ng c\u00f2n n\u1eefa. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS hi\u1ec7n l\u00e0 m\u1ed9t ho\u1ea1t \u0111\u1ed9ng tinh vi trong c\u00e1c doanh nghi\u1ec7p l\u1edbn.<\/p>\n

T\u1ea1p ch\u00ed InfoSecurity<\/em> \u0111\u00e3 b\u00e1o c\u00e1o\u00a02,9 tri\u1ec7u cu\u1ed9c t\u1ea5n c\u00f4ng DDoS trong qu\u00fd 1 n\u0103m 2021, t\u0103ng 31% so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m 2020.<\/p>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u00e3 t\u0103ng 31% trong qu\u00fd 1 n\u0103m 2021 so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m 2020, l\u00ean 2,9 tri\u1ec7u cu\u1ed9c t\u1ea5n c\u00f4ng.<\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, ch\u00fang ta \u0111\u00e3 ch\u1ee9ng ki\u1ebfn\u00a0\u200b\u200b<\/a>s\u1ef1 gia t\u0103ng theo c\u1ea5p s\u1ed1 nh\u00e2n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS. L\u00e0m m\u1ea5t kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u00e1c doanh nghi\u1ec7p trong kho\u1ea3ng th\u1eddi gian \u0111\u00e1ng k\u1ec3.<\/p>\n

V\u00e0o th\u00e1ng 2 n\u0103m 2020, Amazon Web Services (AWS) \u0111\u00e3 h\u1ee9ng ch\u1ecbu m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u1ee7 tinh vi \u0111\u1ec3 khi\u1ebfn c\u00e1c nh\u00f3m \u1ee9ng ph\u00f3 s\u1ef1 c\u1ed1 c\u1ee7a h\u1ecd ph\u1ea3i b\u1eadn r\u1ed9n trong v\u00e0i ng\u00e0y. \u0110\u1ed3ng th\u1eddi \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u00e1ch h\u00e0ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>\n

V\u00e0o th\u00e1ng 2 n\u0103m 2021, s\u00e0n giao d\u1ecbch Ti\u1ec1n \u0111i\u1ec7n t\u1eed EXMO \u0111\u00e3 tr\u1edf th\u00e0nh n\u1ea1n nh\u00e2n c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS khi\u1ebfn t\u1ed5 ch\u1ee9c kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong g\u1ea7n 5 gi\u1edd.<\/p>\n

Chi\u1ebfn tranh CNTT ho\u00e0nh h\u00e0nh: T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec?<\/strong><\/h2>\n

M\u1eb7c d\u00f9 ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, nh\u01b0ng c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u00f3 th\u1ec3 kh\u00e1 ti\u00ean ti\u1ebfn v\u00e0 kh\u00f3 ch\u1ed1ng l\u1ea1i.\u00a0Nh\u01b0ng ch\u00ednh x\u00e1c th\u00ec t\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec v\u00e0 DDoS \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec1u g\u00ec?<\/p>\n

DDoS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n. M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS x\u1ea3y ra khi m\u1ed9t t\u00e1c nh\u00e2n \u0111e d\u1ecda s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean t\u1eeb nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m t\u1eeb xa \u0111\u1ec3 t\u1ea5n c\u00f4ng c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u1ef1c tuy\u1ebfn c\u1ee7a m\u1ed9t t\u1ed5 ch\u1ee9c. Th\u00f4ng th\u01b0\u1eddng, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS t\u1eadp trung v\u00e0o vi\u1ec7c t\u1ea1o ra c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng thao t\u00fang ho\u1ea1t \u0111\u1ed9ng m\u1eb7c \u0111\u1ecbnh ho\u1eb7c th\u1eadm ch\u00ed ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 d\u1ecbch v\u1ee5 m\u1ea1ng (v\u00ed d\u1ee5: b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, d\u1ecbch v\u1ee5 \u0111\u1eb7t t\u00ean ho\u1eb7c d\u1ecbch v\u1ee5 b\u1ed9 \u0111\u1ec7m).<\/p>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS tinh vi kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i t\u1eadn d\u1ee5ng c\u00e1c c\u00e0i \u0111\u1eb7t m\u1eb7c \u0111\u1ecbnh ho\u1eb7c chuy\u1ec3n ti\u1ebfp m\u1edf. Ch\u00fang khai th\u00e1c h\u00e0nh vi b\u00ecnh th\u01b0\u1eddng v\u00e0 t\u1eadn d\u1ee5ng c\u00e1ch c\u00e1c giao th\u1ee9c ch\u1ea1y tr\u00ean c\u00e1c thi\u1ebft b\u1ecb ng\u00e0y nay \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea1y ngay t\u1eeb \u0111\u1ea7u. C\u0169ng gi\u1ed1ng nh\u01b0 c\u00e1ch m\u00e0 m\u1ed9t k\u1ef9 s\u01b0 x\u00e3 h\u1ed9i thao t\u00fang ho\u1ea1t \u0111\u1ed9ng giao ti\u1ebfp m\u1eb7c \u0111\u1ecbnh c\u1ee7a con ng\u01b0\u1eddi. K\u1ebb t\u1ea5n c\u00f4ng DDoS thao t\u00fang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng m\u00e0 t\u1ea5t c\u1ea3 ch\u00fang ta \u0111\u1ec1u d\u1ef1a v\u00e0o v\u00e0 tin t\u01b0\u1edfng.<\/p>\n

Khi m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS di\u1ec5n ra, t\u1ed5 ch\u1ee9c b\u1ecb nh\u1eafm m\u1ee5c ti\u00eau s\u1ebd g\u1eb7p ph\u1ea3i s\u1ef1 gi\u00e1n \u0111o\u1ea1n nghi\u00eam tr\u1ecdng trong m\u1ed9t ho\u1eb7c nhi\u1ec1u d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh v\u00ec cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u00e3 l\u00e0m ng\u1eadp t\u00e0i nguy\u00ean c\u1ee7a h\u1ecd v\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp HTTP, t\u1eeb ch\u1ed1i quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p.\u00a0C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng l\u00e0 m\u1ed9t trong b\u1ed1n m\u1ed1i \u0111e d\u1ecda an ninh m\u1ea1ng h\u00e0ng \u0111\u1ea7u hi\u1ec7n nay, trong s\u1ed1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u00e3 \u0111\u1ed9c t\u1ed1ng ti\u1ec1n<\/strong>\u00a0v\u00e0 chu\u1ed7i cung \u1ee9ng.<\/p>\n

>>> Xem th\u00eam: <\/strong>H\u01b0\u1edbng d\u1eabn quy tr\u00ecnh ch\u1ed1ng anti ddos mi\u1ec5n ph\u00ed t\u1eeb a-z<\/strong><\/a><\/p>\n

Chi\u1ebfn tranh hi\u1ec7n \u0111\u1ea1i: Tr\u00e1nh nh\u1ea7m l\u1eabn v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS<\/strong><\/h2>\n

T\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 nh\u1ea7m l\u1eabn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u1ef1c tuy\u1ebfn kh\u00e1c.\u00a0Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c chuy\u00ean gia CNTT v\u00e0 th\u1eadm ch\u00ed c\u1ea3 c\u00e1c chuy\u00ean gia an ninh m\u1ea1ng c\u00f2n thi\u1ebfu ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u00e1ng k\u1ec3 v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.<\/p>\n

Trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS, t\u1ed9i ph\u1ea1m m\u1ea1ng l\u1ee3i d\u1ee5ng h\u00e0nh vi b\u00ecnh th\u01b0\u1eddng x\u1ea3y ra gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7. Th\u01b0\u1eddng nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/strong> thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i v\u1edbi internet.\u00a0Do \u0111\u00f3, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng t\u1eadp trung v\u00e0o c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng bi\u00ean (v\u00ed d\u1ee5: B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, b\u1ed9 chuy\u1ec3n m\u1ea1ch), thay v\u00ec c\u00e1c m\u00e1y ch\u1ee7 ri\u00eang l\u1ebb.\u00a0M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u00e1p \u0111\u1ea3o \u0111\u01b0\u1eddng \u1ed1ng c\u1ee7a m\u1ea1ng, (b\u0103ng<\/strong> th\u00f4ng)<\/strong> ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb cung c\u1ea5p b\u0103ng th\u00f4ng \u0111\u00f3.<\/p>\n

\u0110\u00e2y l\u00e0 m\u1ed9t ph\u00e9p lo\u1ea1i suy h\u1eefu \u00edch: H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi g\u1ecdi cho b\u1ea1n \u0111\u1ed3ng th\u1eddi khi\u1ebfn b\u1ea1n kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n ho\u1eb7c nh\u1eadn cu\u1ed9c g\u1ecdi ho\u1eb7c s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i c\u1ee7a m\u00ecnh cho b\u1ea5t k\u1ef3 m\u1ee5c \u0111\u00edch n\u00e0o kh\u00e1c.\u00a0S\u1ef1 c\u1ed1 n\u00e0y v\u1eabn ti\u1ebfp di\u1ec5n cho \u0111\u1ebfn khi b\u1ea1n ch\u1eb7n c\u00e1c cu\u1ed9c g\u1ecdi \u0111\u00f3 th\u00f4ng qua nh\u00e0 cung c\u1ea5p c\u1ee7a m\u00ecnh.<\/p>\n

L\u01b0u \u00fd r\u1eb1ng b\u1ea1n kh\u00f4ng s\u1eeda ch\u1eefa, n\u00e2ng c\u1ea5p ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb di \u0111\u1ed9ng th\u1ef1c t\u1ebf c\u1ee7a m\u00ecnh.\u00a0Thay v\u00e0o \u0111\u00f3, b\u1ea1n kh\u1eafc ph\u1ee5c k\u1ebft n\u1ed1i gi\u1eefa nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng v\u00e0 \u0111i\u1ec7n tho\u1ea1i c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 ch\u1eb7n c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng.<\/p>\n

\u0110i\u1ec1u t\u01b0\u01a1ng t\u1ef1 c\u0169ng x\u1ea3y ra trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.\u00a0Thay v\u00ec s\u1eeda \u0111\u1ed5i t\u00e0i nguy\u00ean \u0111ang b\u1ecb t\u1ea5n c\u00f4ng, b\u1ea1n \u00e1p d\u1ee5ng c\u00e1c b\u1ea3n s\u1eeda l\u1ed7i (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u) gi\u1eefa m\u1ea1ng c\u1ee7a b\u1ea1n v\u00e0 t\u00e1c nh\u00e2n \u0111e d\u1ecda.<\/p>\n

\"\"<\/p>\n

>>> Xem th\u00eam: Ddos attack l\u00e0 g\u00ec? M\u00e1y ch\u1ee7 t\u00edch h\u1ee3p anti ddos<\/a><\/strong><\/p>\n

T\u1ea5n c\u00f4ng DDos so v\u1edbi Dos: \u0110\u00e2u l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t?<\/strong><\/h2>\n

\u0110i\u1ec1u quan tr\u1ecdng l\u00e0 tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa t\u1ea5n c\u00f4ng DDoS (t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n) v\u1edbi t\u1ea5n c\u00f4ng DoS (t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5).\u00a0M\u1eb7c d\u00f9 ch\u1ec9 c\u00f3 m\u1ed9t t\u1eeb t\u00e1ch bi\u1ec7t hai, nh\u01b0ng c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y kh\u00e1c nhau \u0111\u00e1ng k\u1ec3 v\u1ec1 b\u1ea3n ch\u1ea5t.<\/p>\n

\u0110\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a m\u1ed9t c\u00e1ch ch\u1eb7t ch\u1ebd, m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111i\u1ec3n h\u00ecnh thao t\u00fang nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng ph\u00e2n t\u00e1n \u1edf gi\u1eefa k\u1ebb t\u1ea5n c\u00f4ng v\u00e0 n\u1ea1n nh\u00e2n \u0111\u1ec3 ti\u1ebfn h\u00e0nh m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng kh\u00f4ng ch\u1ee7 \u00fd, khai th\u00e1c h\u00e0nh vi h\u1ee3p ph\u00e1p.<\/p>\n

M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DoS truy\u1ec1n th\u1ed1ng kh\u00f4ng s\u1eed d\u1ee5ng nhi\u1ec1u thi\u1ebft b\u1ecb ph\u00e2n t\u00e1n, c\u0169ng nh\u01b0 kh\u00f4ng t\u1eadp trung v\u00e0o c\u00e1c thi\u1ebft b\u1ecb n\u1eb1m gi\u1eefa k\u1ebb t\u1ea5n c\u00f4ng v\u00e0 t\u1ed5 ch\u1ee9c.\u00a0C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y c\u0169ng c\u00f3 xu h\u01b0\u1edbng kh\u00f4ng s\u1eed d\u1ee5ng nhi\u1ec1u thi\u1ebft b\u1ecb internet.<\/p>\n

\"T\u1ea5n

T\u1ea5n c\u00f4ng DDos so v\u1edbi Dos: \u0110\u00e2u l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t?<\/p><\/div>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DoS \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n

Flood SYN ngu\u1ed3n \u0111\u01a1n<\/strong><\/h3>\n

\u0110i\u1ec1u n\u00e0y x\u1ea3y ra khi k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng m\u1ed9t h\u1ec7 th\u1ed1ng duy nh\u1ea5t \u0111\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng l\u0169 g\u00f3i SYN, thao t\u00fang qu\u00e1 tr\u00ecnh b\u1eaft tay ba b\u01b0\u1edbc \u0111i\u1ec3n h\u00ecnh c\u1ee7a TCP. V\u00ed d\u1ee5: flood SYN m\u00e0 ai \u0111\u00f3 c\u00f3 th\u1ec3 t\u1ea1o b\u1eb1ng m\u00e1y t\u00ednh Kali Linux kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS<\/a> th\u1ef1c s\u1ef1 v\u00ec cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u1ec9 \u0111\u1ebfn t\u1eeb m\u1ed9t thi\u1ebft b\u1ecb. \u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p ngay c\u1ea3 khi k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 IP. M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi c\u00e1c thi\u1ebft b\u1ecb c\u1ea5p m\u1ea1ng. N\u00f3i c\u00e1ch kh\u00e1c, b\u1ea1n s\u1eed d\u1ee5ng nhi\u1ec1u b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn ho\u1eb7c m\u00e1y ch\u1ee7 Memcached \u0111\u1ec3 t\u1ea5n c\u00f4ng m\u1ea1ng.<\/p>\n

\u201cPing of death\u201d<\/strong><\/h3>\n

Nhi\u1ec1u n\u0103m tr\u01b0\u1edbc, m\u1ed9t s\u1ed1 tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n m\u1ea1ng ch\u1ee9a m\u00e3 l\u1ed7i c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng h\u1ec7 th\u1ed1ng n\u1ebfu h\u1ec7 th\u1ed1ng nh\u1eadn \u0111\u01b0\u1ee3c g\u00f3i ICMP c\u00f3 ch\u1ee9a c\u00e1c tham s\u1ed1 nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

The\u00a0<\/strong>slow loris attack<\/strong><\/h3>\n

T\u1ea5n c\u00f4ng slow loris attack<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u1ea5n c\u00f4ng DDoS, nh\u01b0ng v\u00ec cu\u1ed9c t\u1ea5n c\u00f4ng nh\u1eafm v\u00e0o m\u1ed9t m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3 (trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u00e0 m\u00e1y ch\u1ee7 web) v\u00e0 th\u01b0\u1eddng kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng trung gian n\u00ean n\u00f3 th\u01b0\u1eddng l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DoS truy\u1ec1n th\u1ed1ng.<\/p>\n

M\u1ed7i cu\u1ed9c t\u1ea5n c\u00f4ng DoS \u1edf tr\u00ean \u0111\u1ec1u l\u1ee3i d\u1ee5ng \u0111i\u1ec3m y\u1ebfu c\u1ee7a ph\u1ea7n m\u1ec1m ho\u1eb7c nh\u00e2n trong m\u1ed9t m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, b\u1ea1n s\u1eeda m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef v\u00e0\/ho\u1eb7c l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp. N\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng th\u00ec n\u00f3 kh\u00f4ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS truy\u1ec1n th\u1ed1ng.<\/p>\n

H\u00e3y nh\u1edb r\u1eb1ng, trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS, t\u00e1c nh\u00e2n \u0111e d\u1ecda \u00e1p d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean.\u00a0Chi\u1ebfn l\u01b0\u1ee3c n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng nh\u1eefng g\u00ec c\u00f3 v\u1ebb l\u00e0 y\u00eau c\u1ea7u h\u1ee3p ph\u00e1p \u0111\u1ec3 \u00e1p \u0111\u1ea3o c\u00e1c h\u1ec7 th\u1ed1ng m\u00e0 th\u1ef1c t\u1ebf l\u00e0 kh\u00f4ng h\u1ee3p ph\u00e1p, d\u1eabn \u0111\u1ebfn s\u1ef1 c\u1ed1 h\u1ec7 th\u1ed1ng.<\/p>\n

Chi\u1ebfn tranh chi\u1ebfn thu\u1eadt: L\u00e0m th\u1ebf n\u00e0o nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng DDos tr\u00e1nh b\u1ecb ph\u00e1t hi\u1ec7n<\/h2>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 r\u1ea5t x\u1ea3o quy\u1ec7t v\u00e0 do \u0111\u00f3 r\u1ea5t kh\u00f3 \u0111\u1ec3 x\u1eed l\u00fd. M\u1ed9t trong nh\u1eefng l\u00fd do khi\u1ebfn ch\u00fang tr\u1edf n\u00ean tr\u01a1n tr\u01b0\u1ee3t li\u00ean quan \u0111\u1ebfn vi\u1ec7c kh\u00f3 x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c. C\u00e1c t\u00e1c nh\u00e2n \u0111e d\u1ecda th\u01b0\u1eddng tham gia v\u00e0o ba chi\u1ebfn thu\u1eadt ch\u00ednh \u0111\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS:<\/p>\n

1. Gi\u1ea3 m\u1ea1o<\/strong><\/h3>\n

Theo m\u1eb7c \u0111\u1ecbnh, IPv4 v\u00e0 IPv6 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng x\u00e1c th\u1ef1c v\u00e0 theo d\u00f5i l\u01b0u l\u01b0\u1ee3ng. \u0110\u1eb7c bi\u1ec7t v\u1edbi c\u00e1c m\u1ea1ng IPv4, vi\u1ec7c gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 ngu\u1ed3n v\u00e0 \u0111\u00edch kh\u00e1 \u0111\u01a1n gi\u1ea3n. Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng DDoS l\u1ee3i d\u1ee5ng v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch gi\u1ea3 m\u1ea1o c\u00e1c g\u00f3i c\u00f3 \u0111\u1ecba ch\u1ec9 ngu\u1ed3n gi\u1ea3. Do \u0111\u00f3, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 l\u1eeba c\u00e1c thi\u1ebft b\u1ecb h\u1ee3p ph\u00e1p ph\u1ea3n h\u1ed3i c\u00e1c g\u00f3i n\u00e0y b\u1eb1ng c\u00e1ch g\u1eedi h\u00e0ng tri\u1ec7u ph\u1ea3n h\u1ed3i t\u1edbi m\u00e1y ch\u1ee7 n\u1ea1n nh\u00e2n m\u00e0 ngay t\u1eeb \u0111\u1ea7u ch\u01b0a bao gi\u1edd th\u1ef1c s\u1ef1 \u0111\u01b0a ra y\u00eau c\u1ea7u.<\/p>\n

2. H\u1ed3i t\u01b0\u1edfng<\/strong><\/h3>\n

Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng th\u01b0\u1eddng mu\u1ed1n che gi\u1ea5u b\u1ea5t k\u1ef3 d\u1ea5u v\u1ebft n\u00e0o v\u1ec1 vi\u1ec7c ch\u00fang tham gia v\u00e0o m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS. \u0110\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y, h\u1ecd \u0111i\u1ec1u khi\u1ec3n h\u00e0nh vi m\u1eb7c \u0111\u1ecbnh c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 internet \u0111\u1ec3 c\u00e1c d\u1ecbch v\u1ee5 che gi\u1ea5u k\u1ebb t\u1ea5n c\u00f4ng th\u1ef1c s\u1ef1 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. C\u00e1c d\u1ecbch v\u1ee5 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng n\u00e0y bao g\u1ed3m h\u00e0ng ngh\u00ecn m\u00e1y ch\u1ee7 H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS), Giao th\u1ee9c th\u1eddi gian m\u1ea1ng (NTP) v\u00e0 Qu\u1ea3n l\u00fd m\u1ea1ng \u0111\u01a1n gi\u1ea3n (SNMP). \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do ch\u00ednh khi\u1ebfn nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng b\u1ecb thu h\u00fat b\u1edfi chi\u1ebfn l\u01b0\u1ee3c DDoS. C\u00e1c d\u1ecbch v\u1ee5 Internet kh\u00f4ng ch\u1ec9 cung c\u1ea5p l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u00e0 c\u00f2n c\u00f3 xu h\u01b0\u1edbng khi\u1ebfn nh\u1eefng ng\u01b0\u1eddi b\u1ea3o v\u1ec7 kh\u00f3 truy t\u00ecm ngu\u1ed3n g\u1ed1c c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng h\u01a1n v\u00ec h\u1ea7u h\u1ebft c\u00e1c m\u00e1y ch\u1ee7 kh\u00f4ng l\u01b0u gi\u1eef nh\u1eadt k\u00fd chi ti\u1ebft c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e3 s\u1eed d\u1ee5ng ch\u00fang.<\/p>\n

3. Khu\u1ebfch \u0111\u1ea1i<\/strong><\/h3>\n

Khu\u1ebfch \u0111\u1ea1i l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng DDoS. T\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 s\u1ed1 ngu\u1ed3n m\u00e0 sau \u0111\u00f3 c\u00f3 th\u1ec3 nh\u1eafm v\u00e0o m\u00e1y ch\u1ee7 n\u1ea1n nh\u00e2n. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng khu\u1ebfch \u0111\u1ea1i kh\u00f4ng s\u1eed d\u1ee5ng botnet, n\u00f3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t chi\u1ebfn thu\u1eadt cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng g\u1eedi m\u1ed9t g\u00f3i gi\u1ea3 m\u1ea1o duy nh\u1ea5t. Sau \u0111\u00f3 l\u1eeba m\u1ed9t d\u1ecbch v\u1ee5 h\u1ee3p ph\u00e1p g\u1eedi h\u00e0ng tr\u0103m, n\u1ebfu kh\u00f4ng mu\u1ed1n n\u00f3i l\u00e0 h\u00e0ng ngh\u00ecn c\u00e2u tr\u1ea3 l\u1eddi t\u1edbi m\u1ea1ng ho\u1eb7c m\u00e1y ch\u1ee7 c\u1ee7a n\u1ea1n nh\u00e2n.<\/p>\n

\u0110i\u1ec1u r\u1ea5t quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u r\u1eb1ng c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS s\u1eed d\u1ee5ng c\u00e1c ho\u1ea1t \u0111\u1ed9ng internet th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 th\u1ef1c hi\u1ec7n h\u00e0nh vi ph\u00e1 ho\u1ea1i c\u1ee7a ch\u00fang.\u00a0C\u00e1c thi\u1ebft b\u1ecb n\u00e0y kh\u00f4ng nh\u1ea5t thi\u1ebft b\u1ecb \u0111\u1ecbnh c\u1ea5u h\u00ecnh sai, ch\u00fang th\u1ef1c s\u1ef1 \u0111ang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u00fang ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng.\u00a0Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 t\u00ecm ra c\u00e1ch khai th\u00e1c h\u00e0nh vi n\u00e0y v\u00e0 thao t\u00fang n\u00f3 \u0111\u1ec3 ti\u1ebfn h\u00e0nh cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u1ee7a ch\u00fang.<\/p>\n

\"Chi\u1ebfn

Chi\u1ebfn tranh chi\u1ebfn thu\u1eadt: L\u00e0m th\u1ebf n\u00e0o nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng DDos tr\u00e1nh b\u1ecb ph\u00e1t hi\u1ec7n<\/p><\/div>\n

Ngo\u00e0i ra, c\u00e1c thi\u1ebft b\u1ecb v\u00e0 d\u1ecbch v\u1ee5 m\u1ea1ng th\u01b0\u1eddng tr\u1edf th\u00e0nh nh\u1eefng ng\u01b0\u1eddi tham gia v\u00f4 t\u00ecnh trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.\u00a0Ba chi\u1ebfn thu\u1eadt n\u00e0y t\u1eadn d\u1ee5ng h\u00e0nh vi m\u1eb7c \u0111\u1ecbnh c\u1ee7a t\u00e0i nguy\u00ean m\u1ea1ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.\u00a0Nh\u1eefng t\u00e0i nguy\u00ean n\u00e0y bao g\u1ed3m:<\/p>\n

    \n
  • B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/li>\n
  • C\u00f4ng t\u1eafc<\/li>\n
  • T\u01b0\u1eddng l\u1eeda<\/li>\n
  • C\u00e2n b\u1eb1ng t\u1ea3i<\/li>\n
  • M\u00e1y ch\u1ee7 b\u1ed9 nh\u1edb \u0111\u1ec7m<\/li>\n
  • Thi\u1ebft b\u1ecb m\u1ea1ng bi\u00ean<\/li>\n
  • Th\u00e1p di \u0111\u1ed9ng (bao g\u1ed3m 4G v\u00e0 5G)<\/li>\n<\/ul>\n

    Th\u1eddi l\u01b0\u1ee3ng tr\u1eadn chi\u1ebfn: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS k\u00e9o d\u00e0i bao l\u00e2u?<\/strong><\/h2>\n

    C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS r\u1ea5t kh\u00e1c nhau v\u1ec1 \u0111\u1ed9 d\u00e0i v\u00e0 m\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p.\u00a0M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS c\u00f3 th\u1ec3 di\u1ec5n ra trong m\u1ed9t kho\u1ea3ng th\u1eddi gian d\u00e0i ho\u1eb7c kh\u00e1 ng\u1eafn:<\/p>\n

    T\u1ea5n c\u00f4ng d\u00e0i h\u1ea1n<\/strong><\/h3>\n

    M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong m\u1ed9t kho\u1ea3ng th\u1eddi gian v\u00e0i gi\u1edd ho\u1eb7c v\u00e0i ng\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng d\u00e0i h\u1ea1n.\u00a0V\u00ed d\u1ee5: cu\u1ed9c t\u1ea5n c\u00f4ng DDoS v\u00e0o AWS \u0111\u00e3 g\u00e2y gi\u00e1n \u0111o\u1ea1n trong ba ng\u00e0y tr\u01b0\u1edbc khi cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c gi\u1ea3m nh\u1eb9.<\/p>\n

    Burst Attack<\/strong><\/h3>\n

    \u0110\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong m\u1ed9t kho\u1ea3ng th\u1eddi gian r\u1ea5t ng\u1eafn, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS n\u00e0y ch\u1ec9 k\u00e9o d\u00e0i m\u1ed9t ph\u00fat ho\u1eb7c th\u1eadm ch\u00ed v\u00e0i gi\u00e2y.<\/p>\n

    \u0110\u1eebng \u0111\u1ec3 b\u1ecb l\u1eeba d\u1ed1i.\u00a0M\u1eb7c d\u00f9 r\u1ea5t nhanh, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng d\u1ed3n d\u1eadp th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 c\u1ef1c k\u1ef3 nguy hi\u1ec3m.\u00a0V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb internet v\u1ea1n v\u1eadt (IoT) v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n to\u00e1n ng\u00e0y c\u00e0ng m\u1ea1nh m\u1ebd, c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec1u l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn h\u01a1n bao gi\u1edd h\u1ebft.\u00a0Do \u0111\u00f3, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cao h\u01a1n trong m\u1ed9t kho\u1ea3ng th\u1eddi gian r\u1ea5t ng\u1eafn.\u00a0M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS b\u00f9ng n\u1ed5 th\u01b0\u1eddng c\u00f3 l\u1ee3i cho k\u1ebb t\u1ea5n c\u00f4ng v\u00ec n\u00f3 kh\u00f3 theo d\u00f5i h\u01a1n.<\/p>\n

    Chi\u1ebfn tranh c\u00f4ng ngh\u1ec7: Botnet v\u00e0 t\u1ea5n c\u00f4ng DDoS<\/strong><\/h2>\n

    Botnet, l\u00e0 m\u1ea1ng m\u00e1y t\u00ednh r\u1ed9ng l\u1edbn, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u1ebfn h\u00e0nh c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.\u00a0Ch\u00fang th\u01b0\u1eddng bao g\u1ed3m c\u00e1c m\u00e1y t\u00ednh b\u1ecb x\u00e2m nh\u1eadp (v\u00ed d\u1ee5: Thi\u1ebft b\u1ecb IOT, m\u00e1y ch\u1ee7, m\u00e1y tr\u1ea1m, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, v.v.) ho\u1eb7c x\u00e1c s\u1ed1ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi m\u1ed9t m\u00e1y ch\u1ee7 trung t\u00e2m.<\/p>\n

    Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i c\u00f3 botnet \u0111\u1ec3 ti\u1ebfn h\u00e0nh m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS.\u00a0C\u00e1c t\u00e1c nh\u00e2n \u0111e d\u1ecda c\u00f3 th\u1ec3 ch\u1ec9 c\u1ea7n thao t\u00fang h\u00e0ng ch\u1ee5c ngh\u00ecn thi\u1ebft b\u1ecb m\u1ea1ng tr\u00ean internet b\u1ecb \u0111\u1ecbnh c\u1ea5u h\u00ecnh sai ho\u1eb7c \u0111ang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 thi\u1ebft k\u1ebf.<\/p>\n

    Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u l\u00e0m th\u1ebf n\u00e0o m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS d\u1ef1a tr\u00ean botnet c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n

    K\u1ebb th\u00f9 k\u1ef9 thu\u1eadt s\u1ed1 tinh vi h\u01a1n: S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng DDoS<\/strong><\/h2>\n

    M\u1ed9t trong nh\u1eefng th\u1ef1c t\u1ebf c\u1ee7a an ninh m\u1ea1ng l\u00e0 h\u1ea7u h\u1ebft nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng \u0111\u1ec1u l\u00e0 nh\u1eefng c\u00e1 nh\u00e2n c\u00f3 t\u00e0i n\u0103ng v\u1eeba ph\u1ea3i, b\u1eb1ng c\u00e1ch n\u00e0o \u0111\u00f3 \u0111\u00e3 t\u00ecm ra c\u00e1ch thao t\u00fang m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c t\u00ecnh hu\u1ed1ng m\u1ea1ng nh\u1ea5t \u0111\u1ecbnh.\u00a0M\u1eb7c d\u00f9 th\u01b0\u1eddng c\u00f3 cu\u1ed9c th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1c m\u1ed1i \u0111e d\u1ecda li\u00ean t\u1ee5c n\u00e2ng cao (APT) v\u00e0 tin t\u1eb7c ng\u00e0y c\u00e0ng tinh vi, nh\u01b0ng th\u1ef1c t\u1ebf th\u01b0\u1eddng tr\u1ea7n t\u1ee5c h\u01a1n nhi\u1ec1u.<\/p>\n

    V\u00ed d\u1ee5: H\u1ea7u h\u1ebft nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng DDoS ch\u1ec9 c\u1ea7n t\u00ecm m\u1ed9t giao th\u1ee9c c\u1ee5 th\u1ec3. H\u1ecd s\u1ebd ph\u00e1t hi\u1ec7n ra r\u1eb1ng h\u1ecd c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n b\u1eaft tay giao th\u1ee9c \u0111i\u1ec1u khi\u1ec3n truy\u1ec1n d\u1eabn (TCP) \u0111\u1ec3 t\u1ea1o ra m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u00e0n ng\u1eadp c\u00e1c g\u00f3i SYN ho\u1eb7c m\u1ed9t lo\u1ea1i m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3. Ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u00ecnh n\u1ec1n b\u1ed9 nh\u1edb cache (n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cMemcached,\u201d cho tr\u00ecnh n\u1ec1n b\u1ed9 nh\u1edb cache). D\u1ecbch v\u1ee5 Memcached l\u00e0 d\u1ecbch v\u1ee5 h\u1ee3p ph\u00e1p th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00fap t\u0103ng t\u1ed1c c\u00e1c \u1ee9ng d\u1ee5ng web. Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng th\u01b0\u1eddng khai th\u00e1c c\u00e1c tri\u1ec3n khai Memcached kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt \u0111\u00fang c\u00e1ch. Ngay c\u1ea3 nh\u1eefng tri\u1ec3n khai \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n

    Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u0169ng \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng ch\u00fang c\u00f3 th\u1ec3 x\u00e2m ph\u1ea1m c\u00e1c thi\u1ebft b\u1ecb IoT. Ch\u1eb3ng h\u1ea1n nh\u01b0 webcam ho\u1eb7c m\u00e0n h\u00ecnh tr\u1ebb em. Nh\u01b0ng ng\u00e0y nay, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 nhi\u1ec1u tr\u1ee3 gi\u00fap h\u01a1n. Nh\u1eefng ti\u1ebfn b\u1ed9 g\u1ea7n \u0111\u00e2y \u0111\u00e3 t\u1ea1o ra AI v\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i c\u00f3 ti\u1ec1m n\u0103ng ch\u01b0a t\u1eebng c\u00f3. Gi\u1ed1ng nh\u01b0 c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng h\u1ee3p ph\u00e1p, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng hi\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn d\u1ea1ng gi\u1ecdng n\u00f3i. Hay c\u1ea3 m\u00e1y h\u1ecdc v\u00e0 l\u1ed9 tr\u00ecnh k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 cho ph\u00e9p ch\u00fang thao t\u00fang c\u00e1c thi\u1ebft b\u1ecb t\u00edch h\u1ee3p trong nh\u00e0 ho\u1eb7c v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n. Ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 \u0111i\u1ec1u nhi\u1ec7t th\u00f4ng minh, thi\u1ebft b\u1ecb gia d\u1ee5ng v\u00e0 h\u1ec7 th\u1ed1ng an ninh gia \u0111\u00ecnh.<\/p>\n

    K\u1ebf ho\u1ea1ch t\u1ea5n c\u00f4ng: C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDos d\u1ef1a tr\u00ean Botnet<\/h2>\n

    L\u01b0u l\u01b0\u1ee3ng truy c\u1eadp DDoS c\u00f3 kh\u00e1 nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau. Trong tr\u01b0\u1eddng h\u1ee3p t\u1ea5n c\u00f4ng d\u1ef1a tr\u00ean botnet, t\u00e1c nh\u00e2n \u0111e d\u1ecda DDoS \u0111ang s\u1eed d\u1ee5ng botnet \u0111\u1ec3 gi\u00fap \u0111i\u1ec1u ph\u1ed1i cu\u1ed9c t\u1ea5n c\u00f4ng. Hi\u1ec3u c\u00e1c lo\u1ea1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd gi\u00fap l\u1ef1a ch\u1ecdn c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3m thi\u1ec3u.<\/p>\n

      \n
    1. Ch\u1ec9 huy v\u00e0 Ki\u1ec3m so\u00e1t (C&C)<\/li>\n
    2. Ph\u1ed1i h\u1ee3p<\/li>\n
    3. Giao th\u00f4ng b\u00e1o hi\u1ec7u\/nh\u1ecbp tim<\/li>\n
    4. T\u1ea5n c\u00f4ng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp<\/li>\n
    5. C\u00f4ng ngh\u1ec7 V\u1eadn h\u00e0nh (OT)\/IoT<\/li>\n
    6. Giao th\u00f4ng b\u1ea5t th\u01b0\u1eddng<\/li>\n
    7. \u0110a ph\u01b0\u01a1ng ti\u1ec7n<\/li>\n<\/ol>\n
      \"K\u1ebf

      K\u1ebf ho\u1ea1ch t\u1ea5n c\u00f4ng: C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDos d\u1ef1a tr\u00ean Botnet<\/p><\/div>\n

      ","protected":false},"excerpt":{"rendered":"

      T\u1ea5n c\u00f4ng DDoS l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? Ng\u00e0nh CNTT g\u1ea7n \u0111\u00e2y \u0111\u00e3 ch\u1ee9ng ki\u1ebfn \u200b\u200bs\u1ef1 gia t\u0103ng \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS). Nhi\u1ec1u n\u0103m tr\u01b0\u1edbc, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS \u0111\u01b0\u1ee3c coi l\u00e0 nh\u1eefng m\u1ed1i phi\u1ec1n to\u00e1i nh\u1ecf do nh\u1eefng k\u1ebb […]<\/p>","protected":false},"author":1,"featured_media":12227,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[301,17],"tags":[435],"yoast_head":"\nT\u1ea5n c\u00f4ng DDoS v\u00e0 DoS \u0110\u00e2u l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t<\/title>\n<meta name=\"description\" content=\"Ng\u00e0nh CNTT g\u1ea7n \u0111\u00e2y \u0111\u00e3 ch\u1ee9ng ki\u1ebfn \u200b\u200bs\u1ef1 gia t\u0103ng \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vnso.vn\/en\/tan-cong-ddos-va-dos-dau-la-su-khac-biet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ea5n C\u00f4ng DDoS v\u00e0 DoS \u0110\u00e2u L\u00e0 S\u1ef1 Kh\u00e1c Bi\u1ec7t\" \/>\n<meta property=\"og:description\" content=\"Ng\u00e0nh CNTT g\u1ea7n \u0111\u00e2y \u0111\u00e3 ch\u1ee9ng ki\u1ebfn \u200b\u200bs\u1ef1 gia t\u0103ng \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vnso.vn\/en\/tan-cong-ddos-va-dos-dau-la-su-khac-biet\/\" \/>\n<meta property=\"og:site_name\" content=\"C\u00d4NG NGH\u1ec6 VNSO\u2122\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/VNSO.VN\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-05T14:15:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-27T04:03:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vnso.vn\/wp-content\/uploads\/2023\/04\/may-chu-chinh-hang.png\" \/>\n\t<meta property=\"og:image:width\" content=\"770\" \/>\n\t<meta property=\"og:image:height\" content=\"343\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"quocvu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"quocvu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"14 minutes\" \/>\n<script type=\"application\/ld+json\" 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