Trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng Vi\u1ec7t Nam, 7 trong 10 ng\u01b0\u1eddi ch\u01a1i v\u1eabn g\u1eb7p r\u00e0o c\u1ea3n khi truy c\u1eadp c\u00e1c n\u1ec1n t\u1ea3ng c\u00e1 c\u01b0\u1ee3c. V\u00e0 kh\u00f4ng ph\u1ea3i v\u00ec h\u1ecd ch\u01b0a b\u1eadt VPN, m\u00e0 v\u00ec nh\u00e0 c\u00e1i th\u01b0\u1eddng s\u1eed d\u1ee5ng nh\u1eefng \u0111\u1ecba ch\u1ec9 IP b\u1ecb danh s\u00e1ch \u0111en t\u1ef1 \u0111\u1ed9ng l\u1ecdc. \u0110\u00f3 l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf, kh\u00f4ng c\u00f3 ph\u00e9p thu\u1eadt n\u00e0o gi\u1ea3i quy\u1ebft.<\/p>\n
V\u00ec th\u1ebf, t\u00f4i s\u1ebd chia s\u1ebb 3 ph\u01b0\u01a1ng ph\u00e1p \u201c\u0111i qua t\u01b0\u1eddng\u201d m\u00e0 c\u00e1c \u201ct\u1eeb thi\u1ec7n\u201d c\u1ee7a ng\u00e0nh kh\u00f4ng mu\u1ed1n b\u1ea1n bi\u1ebft. \u0110\u1ea7u ti\u00ean, d\u00f9ng \u201cSmart DNS\u201d \u2013 c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i DNS trong 5 gi\u00e2y, khi\u1ebfn nh\u00e0 m\u1ea1ng tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP s\u1ea1ch nh\u01b0 n\u01b0\u1edbc s\u00f4ng \u0110\u00f4ng. So s\u00e1nh v\u1edbi slot Starburst, t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i DNS nhanh h\u01a1n c\u1ea3 v\u00f2ng quay n\u1ed5 tung c\u1ee7a bi\u1ec3u t\u01b0\u1ee3ng Wild.<\/p>\n
H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n c\u00f3 20 proxy \u1edf 20 qu\u1ed1c gia, m\u1ed7i proxy \u0111\u01b0\u1ee3c xoay v\u00f2ng m\u1ed7i 3 ph\u00fat. Khi m\u1ed9t proxy b\u1ecb ch\u1eb7n, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n sang proxy k\u1ebf ti\u1ebfp m\u00e0 kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n. Trong th\u1ef1c t\u1ebf, nh\u00e0 c\u00e1i nh\u01b0 \u201cNh\u00e0 c\u00e1i 188Bet\u201d \u0111\u00e3 b\u1ecb ch\u1eb7n t\u1ea1i 4 t\u1ec9nh mi\u1ec1n Trung, nh\u01b0ng c\u1ee9 d\u00f9ng proxy thay \u0111\u1ed5i, ng\u01b0\u1eddi ch\u01a1i v\u1eabn c\u00f3 th\u1ec3 v\u00e0o \u0111\u01b0\u1ee3c.<\/p>\n
Nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng su\u00f4n s\u1ebb; m\u1ed9t s\u1ed1 proxy tr\u1ea3 v\u1ec1 l\u1ed7i 502, khi\u1ebfn ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i ch\u1edd 12 gi\u00e2y \u2013 th\u1eddi gian \u0111\u1ee7 \u0111\u1ec3 m\u1ed9t v\u00f2ng quay \u201cGonzo\u2019s Quest\u201d k\u1ebft th\u00fac v\u00e0 b\u1ea1n l\u1ee1 c\u01a1 h\u1ed9i \u201cfree\u201d spin.<\/p>\n
M\u1ed7i proxy ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 gi\u00e1 kho\u1ea3ng 3 USD\/th\u00e1ng. N\u1ebfu b\u1ea1n mua 15 proxy, chi ph\u00ed s\u1ebd l\u00e0 45 USD \u2013 kh\u00f4ng h\u1ec1 \u201cVIP\u201d nh\u01b0 qu\u1ea3ng c\u00e1o \u201cgift\u201d trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh khuy\u1ebfn m\u00e3i. \u0110\u00f3 l\u00e0 con s\u1ed1 th\u1ef1c t\u1ebf, kh\u00f4ng ph\u1ea3i 5 USD \u201cmi\u1ec5n ph\u00ed\u201d.<\/p>\n
DoH m\u00e3 ho\u00e1 to\u00e0n b\u1ed9 truy v\u1ea5n DNS, khi\u1ebfn ISP kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n. Khi m\u1ed9t nh\u00e0 c\u00e1i nh\u01b0 \u201cW88\u201d thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP m\u1ed7i 48 gi\u1edd, DoH s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt m\u00e0 kh\u00f4ng c\u1ea7n ng\u01b0\u1eddi d\u00f9ng can thi\u1ec7p. \u0110\u1ed9 tr\u1ec5 trung b\u00ecnh c\u1ee7a DoH l\u00e0 0,2 gi\u00e2y, nhanh h\u01a1n m\u1ecdi v\u00f2ng quay \u201cMighty\u201d trong slot Thunderstruck II.<\/p>\n
Th\u1eed nghi\u1ec7m v\u1edbi 3 nh\u00e0 cung c\u1ea5p DoH \u2013 Cloudflare, Google v\u00e0 Quad9 \u2013 cho th\u1ea5y th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a Cloudflare (0,18 gi\u00e2y) nhanh nh\u1ea5t 23% so v\u1edbi Google (0,23 gi\u00e2y). Khi b\u1ea1n so s\u00e1nh v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u1ed9t \u201cbonus\u201d 100% l\u00ean t\u1edbi 500% trong 30 ph\u00fat, th\u00ec DoH th\u1eadt s\u1ef1 l\u00e0 \u201cc\u00f4ng c\u1ee5\u201d \u0111\u00e1ng gi\u00e1.<\/p>\n
SSH tunneling hay Shadowsocks t\u1ea1o m\u1ed9t \u201c\u0111\u01b0\u1eddng h\u1ea7m\u201d m\u00e3 ho\u00e1 tr\u1ef1c ti\u1ebfp t\u1edbi m\u00e1y ch\u1ee7 \u1edf n\u01b0\u1edbc ngo\u00e0i. N\u1ebfu b\u1ea1n c\u00f3 server t\u1ea1i Singapore v\u1edbi ping 70 ms, m\u1ecdi y\u00eau c\u1ea7u t\u1edbi nh\u00e0 c\u00e1i s\u1ebd \u0111\u01b0\u1ee3c b\u1ecdc trong k\u00eanh an to\u00e0n, kh\u00f4ng \u0111\u1ec3 l\u1ea1i d\u1ea5u v\u1ebft. Khi so s\u00e1nh v\u1edbi t\u1ed1c \u0111\u1ed9 th\u1eafng c\u1ee7a slot \u201cMega Joker\u201d \u2013 trung b\u00ecnh 1,4 gi\u00e2y cho m\u1ed9t v\u00f2ng quay \u2013 tunneling th\u1ef1c s\u1ef1 \u201cnhanh h\u01a1n\u201d.<\/p>\n
Nh\u01b0ng c\u00f3 m\u1ed9t \u0111i\u1ec3m \u0111\u00e1ng nh\u1eafc: n\u1ebfu t\u00e0i kho\u1ea3n kh\u00f4ng b\u1eadt 2FA, vi\u1ec7c \u201ctunnel\u201d c\u00f3 th\u1ec3 b\u1ecb hacker x\u00e2m nh\u1eadp, g\u00e2y m\u1ea5t 2.000 USD trong 7 ng\u00e0y. \u0110\u00f3 l\u00e0 r\u1ee7i ro th\u1ef1c s\u1ef1, kh\u00f4ng ph\u1ea3i \u201cfree\u201d money nh\u01b0 qu\u1ea3ng c\u00e1o \u201cbonus\u201d 10% g\u1eedi l\u1ea7n \u0111\u1ea7u.<\/p>\n
\u0110\u1ec3 gi\u1ea3m thi\u1ec3u, t\u00f4i khuy\u00ean b\u1ea1n n\u00ean thi\u1ebft l\u1eadp gi\u1edbi h\u1ea1n b\u0103ng th\u00f4ng 500 Kbps cho m\u1ed7i tunnel, tr\u00e1nh vi\u1ec7c qu\u00e1 t\u1ea3i v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 xu\u1ed1ng c\u00f2n 0,3 gi\u00e2y. Khi t\u00ednh to\u00e1n chi ph\u00ed b\u0103ng th\u00f4ng, 500 Kbps trong 30 ng\u00e0y chi\u1ebfm 0,12 USD \u2013 m\u1ed9t con s\u1ed1 v\u1eeba \u0111\u1ee7 \u0111\u1ec3 mua m\u1ed9t \u201cgift\u201d 2 v\u00f2ng quay trong game.<\/p>\n