{"id":50,"date":"2026-07-25T20:25:15","date_gmt":"2026-07-25T20:25:15","guid":{"rendered":"https:\/\/vpnappformac.com\/encrypted-client-hello-sni-filtering-vpn-use\/"},"modified":"2026-07-25T20:25:15","modified_gmt":"2026-07-25T20:25:15","slug":"encrypted-client-hello-sni-filtering-vpn-use","status":"publish","type":"post","link":"https:\/\/vpnappformac.com\/vi\/encrypted-client-hello-sni-filtering-vpn-use\/","title":{"rendered":"Encrypted Client Hello v\u00e0 SNI filtering: ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m quy\u1ec1n ri\u00eang t\u01b0 c\u1ea7n bi\u1ebft g\u00ec"},"content":{"rendered":"

Xin ch\u00e0o m\u00e1y kh\u00e1ch \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 l\u1ecdc SNI: Nh\u1eefng \u0111i\u1ec1u ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m \u0111\u1ebfn quy\u1ec1n ri\u00eang t\u01b0 n\u00ean bi\u1ebft<\/h1>\n

HTTPS b\u1ea3o v\u1ec7 n\u1ed9i dung trang nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o n\u00f3 c\u0169ng \u1ea9n t\u00ean trang web m\u00e0 tr\u00ecnh duy\u1ec7t \u0111ang c\u1ed1 truy c\u1eadp. Kho\u1ea3ng c\u00e1ch \u0111\u00f3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi Wi-Fi c\u00f4ng c\u1ed9ng, tr\u01b0\u1eddng h\u1ecdc, kh\u00e1ch s\u1ea1n, n\u01a1i l\u00e0m vi\u1ec7c v\u00e0 c\u00e1c m\u1ea1ng h\u1ea1n ch\u1ebf n\u01a1i quy\u1ec1n truy c\u1eadp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ecdc th\u00f4ng qua si\u00eau d\u1eef li\u1ec7u k\u1ebft n\u1ed1i.<\/p>\n

M\u00e1y kh\u00e1ch \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a Hello, hay ECH, s\u1ebd gi\u1ea3m m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb \u0111\u00f3. N\u00f3 b\u1ea3o v\u1ec7 c\u00e1c ph\u1ea7n nh\u1ea1y c\u1ea3m c\u1ee7a TLS ClientHello, bao g\u1ed3m c\u1ea3 t\u00ean m\u00e1y ch\u1ee7 t\u1eebng hi\u1ec3n th\u1ecb th\u00f4ng qua ch\u1ec9 b\u00e1o t\u00ean m\u00e1y ch\u1ee7. ECH kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t t\u00ednh n\u0103ng VPN, kh\u00f4ng khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng \u1ea9n danh v\u00e0 kh\u00f4ng \u0111\u1ea3m b\u1ea3o quy\u1ec1n truy c\u1eadp. N\u00f3 thu h\u1eb9p m\u1ed9t kho\u1ea3ng c\u00e1ch si\u00eau d\u1eef li\u1ec7u quan tr\u1ecdng trong khi VPN, DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, c\u00e0i \u0111\u1eb7t tr\u00ecnh duy\u1ec7t v\u00e0 th\u00f3i quen c\u1ea9n th\u1eadn khi s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n v\u1eabn l\u00e0 c\u00e1c l\u1edbp ri\u00eang bi\u1ec7t.<\/p>\n

Kho\u1ea3ng c\u00e1ch v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a HTTPS: SNI<\/h2>\n

Tr\u00ecnh duy\u1ec7t th\u01b0\u1eddng tra c\u1ee9u t\u00ean mi\u1ec1n th\u00f4ng qua DNS v\u00e0 sau \u0111\u00f3 b\u1eaft \u0111\u1ea7u b\u1eaft tay TLS. TLS gi\u00fap m\u00e3 h\u00f3a n\u1ed9i dung trang, m\u1eadt kh\u1ea9u, tin nh\u1eafn v\u00e0 t\u1eadp tin. Trong nhi\u1ec1u n\u0103m, t\u00ean m\u00e1y ch\u1ee7 trong c\u00e1i b\u1eaft tay \u0111\u00f3 v\u1eabn hi\u1ec3n th\u1ecb l\u00e0 SNI. SNI t\u1ed3n t\u1ea1i v\u00ec nhi\u1ec1u trang web chia s\u1ebb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u00e0 m\u00e1y ch\u1ee7 c\u1ea7n bi\u1ebft n\u00ean xu\u1ea5t tr\u00ecnh ch\u1ee9ng ch\u1ec9 n\u00e0o.<\/p>\n

Gi\u00e1 tr\u1ecb TLS SNI hi\u1ec3n th\u1ecb \u0111\u00f3 c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 mi\u1ec1n n\u00e0o thi\u1ebft b\u1ecb \u0111ang c\u1ed1 truy c\u1eadp, ngay c\u1ea3 khi n\u1ed9i dung trang v\u1eabn \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/p>\n

L\u1ecdc SNI l\u00e0m g\u00ec<\/h2>\n

L\u1ecdc SNI c\u00f3 ngh\u0129a l\u00e0 cho ph\u00e9p, ch\u1eb7n ho\u1eb7c l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00e1c k\u1ebft n\u1ed1i HTTPS d\u1ef1a tr\u00ean t\u00ean m\u00e1y ch\u1ee7 hi\u1ec3n th\u1ecb trong qu\u00e1 tr\u00ecnh b\u1eaft tay TLS ban \u0111\u1ea7u. Nh\u00e0 \u0111i\u1ec1u h\u00e0nh m\u1ea1ng c\u00f3 th\u1ec3 ki\u1ec3m tra SNI, so s\u00e1nh n\u00f3 v\u1edbi danh s\u00e1ch v\u00e0 \u0111\u1eb7t l\u1ea1i ho\u1eb7c ch\u1eb7n k\u1ebft n\u1ed1i m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3i m\u00e3 to\u00e0n b\u1ed9 phi\u00ean HTTPS. \u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng, k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 gi\u1ed1ng nh\u01b0 m\u1ed9t l\u1ed7i k\u1ebft n\u1ed1i m\u01a1 h\u1ed3.<\/p>\n

Kh\u00e1ch h\u00e0ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a c\u00f3 g\u00ec Xin ch\u00e0o Thay \u0111\u1ed5i<\/h2>\n

Encrypted Client Hello m\u00e3 h\u00f3a ClientHello nh\u1ea1y c\u1ea3m b\u00ean trong b\u1eb1ng kh\u00f3a chung c\u1ee7a m\u00e1y ch\u1ee7. Tr\u00ecnh duy\u1ec7t g\u1eedi ClientHello b\u00ean ngo\u00e0i \u00edt ti\u1ebft l\u1ed9 h\u01a1n v\u00e0 ClientHello b\u00ean trong \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a m\u00e0 ch\u1ec9 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng ph\u00eda m\u00e1y ch\u1ee7 d\u1ef1 \u0111\u1ecbnh m\u1edbi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c. Ng\u01b0\u1eddi quan s\u00e1t c\u00f3 th\u1ec3 th\u1ea5y k\u1ebft n\u1ed1i t\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng l\u01b0u tr\u1eef nh\u01b0ng kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y tr\u1ef1c ti\u1ebfp t\u00ean m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/p>\n

\u0110\u00f3 l\u00e0 gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf c\u1ee7a \u1ee9ng d\u1ee5ng kh\u00e1ch \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a xin ch\u00e0o: n\u00f3 gi\u1ea3m r\u00f2 r\u1ec9 t\u00ean m\u00e1y ch\u1ee7 tr\u1ef1c ti\u1ebfp trong qu\u00e1 tr\u00ecnh b\u1eaft tay TLS \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. N\u00f3 c\u0169ng gi\u1ea3i th\u00edch \u0111\u1ed9ng th\u00e1i v\u01b0\u1ee3t ra ngo\u00e0i SNI \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a. SNI \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a l\u00e0 \u00fd t\u01b0\u1edfng tr\u01b0\u1edbc \u0111\u00e2y ch\u1ec9 m\u00e3 h\u00f3a SNI; ECH b\u1ea3o v\u1ec7 ClientHello nhi\u1ec1u h\u01a1n, bao g\u1ed3m SNI v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 nh\u1ea1y c\u1ea3m kh\u00e1c.<\/p>\n

ECH kh\u00f4ng che gi\u1ea5u \u0111i\u1ec1u g\u00ec<\/h2>\n

ECH kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 ri\u00eang t\u01b0 ho\u00e0n to\u00e0n. Truy v\u1ea5n DNS c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 t\u00ean mi\u1ec1n n\u1ebfu DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. \u0110\u1ecba ch\u1ec9 IP v\u1eabn hi\u1ec3n th\u1ecb \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn. Th\u1eddi gian v\u00e0 l\u01b0u l\u01b0\u1ee3ng giao th\u00f4ng v\u1eabn c\u00f3 th\u1ec3 cung c\u1ea5p manh m\u1ed1i. T\u00e0i kho\u1ea3n \u0111\u00e3 \u0111\u0103ng nh\u1eadp, cookie, d\u1ea5u v\u00e2n tay c\u1ee7a tr\u00ecnh duy\u1ec7t v\u00e0 h\u00e0nh vi \u1ee9ng d\u1ee5ng v\u1eabn c\u00f3 th\u1ec3 nh\u1eadn d\u1ea1ng ho\u1eb7c theo d\u00f5i ng\u01b0\u1eddi d\u00f9ng. ECH ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi tr\u00ecnh duy\u1ec7t, \u0111\u01b0\u1eddng d\u1eabn DNS v\u00e0 d\u1ecbch v\u1ee5 \u0111\u00edch h\u1ed7 tr\u1ee3 n\u00f3.<\/p>\n

T\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c ch\u1ed1ng ki\u1ec3m duy\u1ec7t<\/h2>\n

L\u1ecdc SNI tr\u1edf n\u00ean h\u1eefu \u00edch \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ki\u1ec3m duy\u1ec7t v\u00ec n\u00f3 ch\u00ednh x\u00e1c. N\u1ebfu t\u00ean m\u00e1y ch\u1ee7 hi\u1ec3n th\u1ecb, b\u1ed9 l\u1ecdc c\u00f3 th\u1ec3 nh\u1eafm m\u1ee5c ti\u00eau m\u1ed9t mi\u1ec1n m\u00e0 kh\u00f4ng ch\u1eb7n m\u1ecdi trang web tr\u00ean c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP. ECH c\u00f3 th\u1ec3 l\u00e0m cho ph\u00edm t\u1eaft \u0111\u00f3 k\u00e9m tin c\u1eady h\u01a1n khi n\u00f3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7. Tuy nhi\u00ean, b\u1ea3n th\u00e2n n\u00f3 kh\u00f4ng \u0111\u00e1nh b\u1ea1i \u0111\u01b0\u1ee3c s\u1ef1 ki\u1ec3m duy\u1ec7t. M\u1ea1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u1eb7n DNS, ch\u1eb7n IP, ki\u1ec3m so\u00e1t \u0111i\u1ec3m cu\u1ed1i, ph\u00e2n t\u00edch l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ho\u1eb7c ch\u1eb7n tr\u1ef1c ti\u1ebfp l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp li\u00ean quan \u0111\u1ebfn ECH.<\/p>\n

N\u01a1i s\u1eed d\u1ee5ng VPN ph\u00f9 h\u1ee3p<\/h2>\n

\u0110\u1ed1i v\u1edbi c\u00e1c tr\u00ecnh \u0111\u1ecdc V\u1ec7 tinh VPN, vi\u1ec7c s\u1eed d\u1ee5ng ECH v\u00e0 VPN s\u1ebd gi\u1ea3i quy\u1ebft c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a v\u1ea5n \u0111\u1ec1 v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0. ECH gi\u1ea3m kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb t\u00ean m\u00e1y ch\u1ee7 trong c\u00e1c b\u1eaft tay HTTPS \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. VPN thay \u0111\u1ed5i tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee5c b\u1ed9 b\u1eb1ng c\u00e1ch g\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp qua \u0111\u01b0\u1eddng h\u1ea7m \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u1ebfn m\u00e1y ch\u1ee7 VPN. V\u1edbi VPN Unlimited c\u1ee7a KeepSolid, m\u1ea1ng Wi-Fi c\u1ee5c b\u1ed9 ho\u1eb7c ISP th\u01b0\u1eddng s\u1ebd th\u1ea5y k\u1ebft n\u1ed1i VPN thay v\u00ec t\u00e1ch c\u00e1c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ecdi trang web.<\/p>\n

VPN c\u00f3 th\u1ec3 h\u1eefu \u00edch tr\u00ean Wi-Fi c\u00f4ng c\u1ed9ng, m\u1ea1ng kh\u00e1ch s\u1ea1n, m\u1ea1ng trong khu\u00f4n vi\u00ean tr\u01b0\u1eddng, c\u0103n h\u1ed9 chung v\u00e0 c\u00e1c m\u1ea1ng kh\u00e1c m\u00e0 b\u1ea1n kh\u00f4ng ki\u1ec3m so\u00e1t. N\u00f3 kh\u00f4ng khi\u1ebfn b\u1ea1n \u1ea9n danh \u0111\u1ed1i v\u1edbi c\u00e1c trang web n\u01a1i b\u1ea1n \u0111\u0103ng nh\u1eadp, x\u00f3a cookie, \u0111\u1ea3m b\u1ea3o quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ecdi d\u1ecbch v\u1ee5, quy\u1ebft \u0111\u1ecbnh xem trang web c\u00f3 h\u1ed7 tr\u1ee3 ECH hay thay th\u1ebf vi\u1ec7c v\u1ec7 sinh tr\u00ecnh duy\u1ec7t v\u00e0 nh\u1eadn th\u1ee9c v\u1ec1 lu\u1eadt ph\u00e1p \u0111\u1ecba ph\u01b0\u01a1ng hay kh\u00f4ng.<\/p>\n

Danh s\u00e1ch ki\u1ec3m tra th\u1ef1c h\u00e0nh<\/h2>\n

Lu\u00f4n c\u1eadp nh\u1eadt tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n<\/h3>\n

C\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng bao g\u1ed3m c\u00e1c c\u1ea3i ti\u1ebfn v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 TLS m\u1edbi h\u01a1n, m\u1eb7c d\u00f9 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 s\u1ebd kh\u00e1c nhau t\u00f9y theo n\u1ec1n t\u1ea3ng v\u00e0 c\u00e0i \u0111\u1eb7t.<\/p>\n

S\u1eed d\u1ee5ng HTTPS nh\u01b0ng hi\u1ec3u si\u00eau d\u1eef li\u1ec7u<\/h3>\n

HTTPS b\u1ea3o v\u1ec7 n\u1ed9i dung. Quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a si\u00eau d\u1eef li\u1ec7u c\u00f3 li\u00ean quan nh\u01b0ng ri\u00eang bi\u1ec7t v\u00e0 SNI l\u00e0 m\u1ed9t trong nh\u1eefng kho\u1ea3ng tr\u1ed1ng m\u00e0 ECH mu\u1ed1n gi\u1ea3m b\u1edbt.<\/p>\n

H\u00e3y coi DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a b\u1ee9c tranh<\/h3>\n

ECH th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ea3n ghi DNS. N\u1ebfu DNS b\u1ecb ch\u1eb7n, s\u1eeda \u0111\u1ed5i ho\u1eb7c hi\u1ec3n th\u1ecb \u1edf d\u1ea1ng v\u0103n b\u1ea3n g\u1ed1c, m\u1ed9t ph\u1ea7n l\u1ee3i \u00edch v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 c\u00f3 th\u1ec3 b\u1ecb suy y\u1ebfu.<\/p>\n

S\u1eed d\u1ee5ng VPN tr\u00ean c\u00e1c m\u1ea1ng b\u1ea1n kh\u00f4ng tin c\u1eady<\/h3>\n

VPN ph\u00f9 h\u1ee3p nh\u1ea5t khi m\u1ea1ng c\u1ee5c b\u1ed9 l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh. N\u00f3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb tr\u1ef1c ti\u1ebfp cho m\u1ea1ng \u0111\u00f3, nh\u01b0ng \u0111\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t l\u1edbp ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt ho\u00e0n ch\u1ec9nh.<\/p>\n

Chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi \u0111i du l\u1ecbch<\/h3>\n

C\u00e0i \u0111\u1eb7t v\u00e0 ki\u1ec3m tra c\u00e1c c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt tr\u01b0\u1edbc khi b\u1ea1n s\u1eed d\u1ee5ng m\u1ea1ng h\u1ea1n ch\u1ebf. H\u00e3y ki\u1ec3m tra c\u00e1c quy \u0111\u1ecbnh c\u1ee7a \u0111\u1ecba ph\u01b0\u01a1ng v\u00ec b\u00e0i vi\u1ebft n\u00e0y l\u00e0 gi\u00e1o d\u1ee5c k\u1ef9 thu\u1eadt ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u01b0 v\u1ea5n ph\u00e1p l\u00fd.<\/p>\n

##C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/p>\n

M\u00e1y kh\u00e1ch \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a Xin ch\u00e0o c\u00f3 gi\u1ed1ng nh\u01b0 VPN kh\u00f4ng?<\/h2>\n

Kh\u00f4ng. ECH l\u00e0 c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt TLS d\u00e0nh cho c\u00e1c k\u1ebft n\u1ed1i HTTPS \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. VPN \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a thi\u1ebft b\u1ecb qua \u0111\u01b0\u1eddng h\u1ea7m \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u1ebfn m\u00e1y ch\u1ee7 VPN.<\/p>\n

ECH c\u00f3 d\u1eebng t\u1ea5t c\u1ea3 qu\u00e1 tr\u00ecnh l\u1ecdc SNI kh\u00f4ng?<\/h2>\n

Kh\u00f4ng. N\u00f3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u00ednh h\u1eefu \u00edch c\u1ee7a t\u00ednh n\u0103ng l\u1ecdc d\u1ef1a tr\u00ean SNI khi \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3, nh\u01b0ng m\u1ea1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p l\u1ecdc kh\u00e1c.<\/p>\n

T\u1ea1i sao SNI l\u1ea1i hi\u1ec3n th\u1ecb n\u1ebfu HTTPS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a?<\/h2>\n

M\u00e1y ch\u1ee7 c\u1ea7n bi\u1ebft ch\u1ee9ng ch\u1ec9 n\u00e0o s\u1ebd xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc khi phi\u00ean m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ea7y \u0111\u1ee7.<\/p>\n

\u0110i\u1ec3m m\u1ea5u ch\u1ed1t<\/h2>\n

ECH b\u1ea3o v\u1ec7 m\u1ed9t ph\u1ea7n si\u00eau d\u1eef li\u1ec7u web b\u1ecb l\u1ed9 qu\u00e1 l\u00e2u. B\u00e0i h\u1ecdc th\u1ef1c t\u1ebf l\u00e0 quy\u1ec1n ri\u00eang t\u01b0 theo l\u1edbp: HTTPS b\u1ea3o v\u1ec7 n\u1ed9i dung, ECH gi\u00fap b\u1ea3o v\u1ec7 b\u1eaft tay, DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gi\u00fap gi\u1ea3m r\u00f2 r\u1ec9 DNS v\u00e0 VPN gi\u1ea3m nh\u1eefng g\u00ec m\u1ea1ng c\u1ee5c b\u1ed9 nh\u00ecn th\u1ea5y v\u1ec1 tuy\u1ebfn \u0111\u01b0\u1eddng l\u01b0u l\u01b0\u1ee3ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

Encrypted Client Hello gi\u00fap che gi\u1ea5u m\u1ed9t ph\u1ea7n metadata HTTPS t\u1eebng l\u1ed9 trong th\u1eddi gian d\u00e0i: hostname g\u1eedi trong TLS handshake. B\u00e0i vi\u1ebft gi\u1ea3i th\u00edch ECH thay \u0111\u1ed5i g\u00ec, kh\u00f4ng che gi\u1ea5u g\u00ec v\u00e0 ng\u01b0\u1eddi d\u00f9ng VPN n\u00ean hi\u1ec3u ra sao.<\/p>\n","protected":false},"author":0,"featured_media":51,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[75,79,77,18,76,78,59],"class_list":["post-50","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-privacy","tag-encrypted-client-hello","tag-encrypted-dns","tag-https-privacy","tag-internet-censorship","tag-sni-filtering","tag-tls","tag-vpn-privacy"],"yoast_head":"\nEncrypted Client Hello v\u00e0 SNI filtering: ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m quy\u1ec1n ri\u00eang t\u01b0 c\u1ea7n bi\u1ebft g\u00ec<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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property=\"og:locale:alternate\" content=\"ko_KR\" \/>\n<meta property=\"og:locale:alternate\" content=\"ur\" \/>\n<meta property=\"og:locale:alternate\" content=\"bn_BD\" \/>\n<meta property=\"og:locale:alternate\" content=\"th\" \/>\n<meta property=\"og:locale:alternate\" content=\"it_IT\" \/>\n<meta property=\"og:locale:alternate\" content=\"pl_PL\" \/>\n<meta property=\"og:locale:alternate\" content=\"uk\" \/>\n<meta property=\"og:locale:alternate\" content=\"nl_NL\" \/>\n<meta property=\"og:locale:alternate\" content=\"tl\" \/>\n<meta property=\"og:locale:alternate\" content=\"ms_MY\" \/>\n<meta property=\"og:locale:alternate\" content=\"ta_IN\" \/>\n<meta property=\"og:locale:alternate\" content=\"te\" \/>\n<meta property=\"og:locale:alternate\" content=\"mr\" \/>\n<meta property=\"og:locale:alternate\" content=\"pa_IN\" \/>\n<meta property=\"og:locale:alternate\" content=\"gu\" \/>\n<meta property=\"og:locale:alternate\" content=\"kn\" \/>\n<meta property=\"og:locale:alternate\" 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\/>\n<meta property=\"og:locale:alternate\" content=\"sw\" \/>\n<meta property=\"og:locale:alternate\" content=\"ha\" \/>\n<meta property=\"og:locale:alternate\" content=\"am\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Encrypted Client Hello v\u00e0 SNI filtering: ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m quy\u1ec1n ri\u00eang t\u01b0 c\u1ea7n bi\u1ebft g\u00ec\" \/>\n<meta property=\"og:description\" content=\"Encrypted Client Hello gi\u00fap che gi\u1ea5u m\u1ed9t ph\u1ea7n metadata HTTPS t\u1eebng l\u1ed9 trong th\u1eddi gian d\u00e0i: hostname g\u1eedi trong TLS handshake. B\u00e0i vi\u1ebft gi\u1ea3i th\u00edch ECH thay \u0111\u1ed5i g\u00ec, kh\u00f4ng che gi\u1ea5u g\u00ec v\u00e0 ng\u01b0\u1eddi d\u00f9ng VPN n\u00ean hi\u1ec3u ra sao.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vpnappformac.com\/vi\/encrypted-client-hello-sni-filtering-vpn-use\/\" \/>\n<meta property=\"og:site_name\" content=\"VPN Unlimited for Mac\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-25T20:25:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vpnappformac.com\/wp-content\/uploads\/2026\/07\/1785011106-en-encrypted-client-hello-and-sni-filtering-what-privacy-con-ech-sni-filtering-cover.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"160 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/vpnappformac.com\\\/kn\\\/encrypted-client-hello-sni-filtering-vpn-use\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/vpnappformac.com\\\/kn\\\/encrypted-client-hello-sni-filtering-vpn-use\\\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"Encrypted Client Hello v\u00e0 SNI filtering: ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m quy\u1ec1n ri\u00eang t\u01b0 c\u1ea7n bi\u1ebft 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saber los usuarios de VPN preocupados por la privacidad[:pt]Encrypted Client Hello e filtragem SNI: o que usu\u00e1rios de VPN preocupados com privacidade devem saber[:ru]Encrypted Client Hello \u0438 \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u044f SNI: \u0447\u0442\u043e \u0432\u0430\u0436\u043d\u043e \u0437\u043d\u0430\u0442\u044c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c VPN, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u043d\u0435\u0431\u0435\u0437\u0440\u0430\u0437\u043b\u0438\u0447\u043d\u0430 \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u043e\u0441\u0442\u044c[:ar]Encrypted Client Hello \u0648\u062a\u0635\u0641\u064a\u0629 SNI: \u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u0646\u0628\u063a\u064a \u0644\u0645\u0633\u062a\u062e\u062f\u0645\u064a VPN \u0627\u0644\u0645\u0647\u062a\u0645\u064a\u0646 \u0628\u0627\u0644\u062e\u0635\u0648\u0635\u064a\u0629 \u0645\u0639\u0631\u0641\u062a\u0647[:hi]Encrypted Client Hello \u0914\u0930 SNI filtering: \u0917\u094b\u092a\u0928\u0940\u092f\u0924\u093e-\u0938\u091a\u0947\u0924 VPN \u0909\u092a\u092f\u094b\u0917\u0915\u0930\u094d\u0924\u093e\u0913\u0902 \u0915\u094b \u0915\u094d\u092f\u093e \u091c\u093e\u0928\u0928\u093e \u091a\u093e\u0939\u093f\u090f[:id]Encrypted Client Hello dan SNI filtering: hal yang perlu diketahui pengguna VPN yang peduli privasi[:tr]Encrypted Client Hello ve SNI filtering: gizlili\u011fe \u00f6nem veren VPN kullan\u0131c\u0131lar\u0131 ne bilmeli[:fa]Encrypted Client Hello \u0648 \u0641\u06cc\u0644\u062a\u0631 SNI: \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u062d\u0633\u0627\u0633 \u0628\u0647 \u062d\u0631\u06cc\u0645 \u062e\u0635\u0648\u0635\u06cc VPN \u0686\u0647 \u0628\u0627\u06cc\u062f \u0628\u062f\u0627\u0646\u0646\u062f[:zh]Encrypted Client Hello \u4e0e SNI \u8fc7\u6ee4\uff1a\u91cd\u89c6\u9690\u79c1\u7684 VPN \u7528\u6237\u5e94\u4e86\u89e3\u4ec0\u4e48[:fr]Encrypted Client Hello et filtrage SNI : ce que les utilisateurs de VPN soucieux de confidentialit\u00e9 doivent savoir[:de]Encrypted Client Hello und SNI-Filtering: Was datenschutzbewusste VPN-Nutzer wissen sollten[:ja]Encrypted Client Hello \u3068 SNI filtering\uff1a\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u91cd\u8996\u3059\u308b VPN \u30e6\u30fc\u30b6\u30fc\u304c\u77e5\u308b\u3079\u304d\u3053\u3068[:ko]Encrypted Client Hello\uc640 SNI filtering: \uac1c\uc778\uc815\ubcf4\ub97c \uc911\uc2dc\ud558\ub294 VPN \uc0ac\uc6a9\uc790\uac00 \uc54c\uc544\uc57c \ud560 \uc810[:vi]Encrypted Client Hello v\u00e0 SNI filtering: ng\u01b0\u1eddi d\u00f9ng VPN quan t\u00e2m quy\u1ec1n ri\u00eang t\u01b0 c\u1ea7n bi\u1ebft g\u00ec[:ur]Encrypted Client Hello \u0627\u0648\u0631 SNI filtering: \u067e\u0631\u0627\u0626\u06cc\u0648\u06cc\u0633\u06cc \u06a9\u0627 \u062e\u06cc\u0627\u0644 \u0631\u06a9\u06be\u0646\u06d2 \u0648\u0627\u0644\u06d2 VPN \u0635\u0627\u0631\u0641\u06cc\u0646 \u06a9\u0648 \u06a9\u06cc\u0627 \u062c\u0627\u0646\u0646\u0627 \u0686\u0627\u06c1\u06cc\u06d2[:bn]Encrypted Client Hello \u0993 SNI filtering: \u0997\u09cb\u09aa\u09a8\u09c0\u09df\u09a4\u09be \u09b8\u099a\u09c7\u09a4\u09a8 VPN \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0\u0995\u09be\u09b0\u09c0\u09a6\u09c7\u09b0 \u09af\u09be \u099c\u09be\u09a8\u09be \u09a6\u09b0\u0995\u09be\u09b0[:th]Encrypted Client Hello \u0e41\u0e25\u0e30 SNI filtering: \u0e2a\u0e34\u0e48\u0e07\u0e17\u0e35\u0e48\u0e1c\u0e39\u0e49\u0e43\u0e0a\u0e49 VPN \u0e17\u0e35\u0e48\u0e43\u0e2a\u0e48\u0e43\u0e08\u0e04\u0e27\u0e32\u0e21\u0e40\u0e1b\u0e47\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e15\u0e31\u0e27\u0e04\u0e27\u0e23\u0e23\u0e39\u0e49[:it]Encrypted Client Hello e filtraggio SNI: cosa devono sapere gli utenti VPN attenti alla privacy[:pl]Encrypted Client Hello i filtrowanie SNI: co powinni wiedzie\u0107 u\u017cytkownicy VPN dbaj\u0105cy o prywatno\u015b\u0107[:uk]Encrypted Client Hello \u0456 \u0444\u0456\u043b\u044c\u0442\u0440\u0430\u0446\u0456\u044f SNI: \u0449\u043e \u0432\u0430\u0440\u0442\u043e \u0437\u043d\u0430\u0442\u0438 \u043a\u043e\u0440\u0438\u0441\u0442\u0443\u0432\u0430\u0447\u0430\u043c VPN, \u044f\u043a\u0438\u043c \u0432\u0430\u0436\u043b\u0438\u0432\u0430 \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u0456\u0441\u0442\u044c[:nl]Encrypted Client Hello en SNI filtering: wat privacybewuste VPN-gebruikers moeten weten[:tl]Encrypted Client Hello at SNI filtering: ang dapat malaman ng mga VPN user na maingat sa privacy[:ms]Encrypted Client Hello dan SNI filtering: perkara yang patut diketahui pengguna VPN yang mementingkan privasi[:ta]Encrypted Client Hello \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd SNI filtering: \u0ba4\u0ba9\u0bbf\u0baf\u0bc1\u0bb0\u0bbf\u0bae\u0bc8 \u0b95\u0bb5\u0ba9\u0bbf\u0b95\u0bcd\u0b95\u0bc1\u0bae\u0bcd VPN \u0baa\u0baf\u0ba9\u0bb0\u0bcd\u0b95\u0bb3\u0bcd \u0b85\u0bb1\u0bbf\u0baf \u0bb5\u0bc7\u0ba3\u0bcd\u0b9f\u0bbf\u0baf\u0ba4\u0bc1[:te]Encrypted Client Hello \u0c2e\u0c30\u0c3f\u0c2f\u0c41 SNI filtering: \u0c17\u0c4b\u0c2a\u0c4d\u0c2f\u0c24\u0c28\u0c41 \u0c2a\u0c1f\u0c4d\u0c1f\u0c3f\u0c02\u0c1a\u0c41\u0c15\u0c41\u0c28\u0c47 VPN \u0c35\u0c3f\u0c28\u0c3f\u0c2f\u0c4b\u0c17\u0c26\u0c3e\u0c30\u0c41\u0c32\u0c41 \u0c24\u0c46\u0c32\u0c41\u0c38\u0c41\u0c15\u0c4b\u0c35\u0c3e\u0c32\u0c4d\u0c38\u0c3f\u0c02\u0c26\u0c3f[:mr]Encrypted Client Hello \u0906\u0923\u093f SNI filtering: \u0917\u094b\u092a\u0928\u0940\u092f\u0924\u0947\u091a\u0940 \u0915\u093e\u0933\u091c\u0940 \u0918\u0947\u0923\u093e\u0931\u094d\u092f\u093e VPN \u0935\u093e\u092a\u0930\u0915\u0930\u094d\u0924\u094d\u092f\u093e\u0902\u0928\u0940 \u0915\u093e\u092f \u091c\u093e\u0923\u093e\u0935\u0947[:pa]Encrypted Client Hello \u0a05\u0a24\u0a47 SNI filtering: \u0a2a\u0a30\u0a3e\u0a08\u0a35\u0a47\u0a38\u0a40-\u0a38\u0a1a\u0a47\u0a24 VPN \u0a35\u0a30\u0a24\u0a4b\u0a02\u0a15\u0a3e\u0a30\u0a3e\u0a02 \u0a32\u0a08 \u0a1c\u0a3e\u0a23\u0a28 \u0a35\u0a3e\u0a32\u0a40\u0a06\u0a02 \u0a17\u0a71\u0a32\u0a3e\u0a02[:gu]Encrypted Client Hello \u0a85\u0aa8\u0ac7 SNI filtering: \u0a97\u0acb\u0aaa\u0aa8\u0ac0\u0aaf\u0aa4\u0abe \u0a85\u0a82\u0a97\u0ac7 \u0ab8\u0a9a\u0ac7\u0aa4 VPN \u0ab5\u0aaa\u0ab0\u0abe\u0ab6\u0a95\u0ab0\u0acd\u0aa4\u0abe\u0a93\u0a8f \u0ab6\u0ac1\u0a82 \u0a9c\u0abe\u0aa3\u0ab5\u0ac1\u0a82[:kn]Encrypted Client Hello \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 SNI filtering: \u0c97\u0ccc\u0caa\u0ccd\u0caf\u0ca4\u0cc6 \u0cac\u0c97\u0ccd\u0c97\u0cc6 \u0c95\u0cbe\u0cb3\u0c9c\u0cbf \u0c87\u0cb0\u0cc1\u0cb5 VPN \u0cac\u0cb3\u0c95\u0cc6\u0ca6\u0cbe\u0cb0\u0cb0\u0cc1 \u0ca4\u0cbf\u0cb3\u0cbf\u0caf\u0cac\u0cc7\u0c95\u0cbe\u0ca6\u0ca6\u0ccd\u0ca6\u0cc1[:ro]Encrypted Client Hello \u0219i filtrarea SNI: ce ar trebui s\u0103 \u0219tie utilizatorii VPN preocupa\u021bi de confiden\u021bialitate[:el]Encrypted Client Hello \u03ba\u03b1\u03b9 SNI filtering: \u03c4\u03b9 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bd \u03bf\u03b9 \u03c7\u03c1\u03ae\u03c3\u03c4\u03b5\u03c2 VPN \u03c0\u03bf\u03c5 \u03bd\u03bf\u03b9\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b9\u03b4\u03b9\u03c9\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1[:he]Encrypted Client Hello \u05d5\u05e1\u05d9\u05e0\u05d5\u05df SNI: \u05de\u05d4 \u05de\u05e9\u05ea\u05de\u05e9\u05d9 VPN \u05e9\u05de\u05e7\u05e4\u05d9\u05d3\u05d9\u05dd \u05e2\u05dc \u05e4\u05e8\u05d8\u05d9\u05d5\u05ea \u05e6\u05e8\u05d9\u05db\u05d9\u05dd \u05dc\u05d3\u05e2\u05ea[:cs]Encrypted Client Hello a SNI filtering: co by m\u011bli v\u011bd\u011bt u\u017eivatel\u00e9 VPN dbaj\u00edc\u00ed na soukrom\u00ed[:hu]Encrypted Client Hello \u00e9s SNI filtering: amit az adatv\u00e9delemre figyel\u0151 VPN-felhaszn\u00e1l\u00f3knak tudniuk kell[:sv]Encrypted Client Hello och SNI filtering: vad integritetsmedvetna VPN-anv\u00e4ndare b\u00f6r veta[:da]Encrypted Client Hello og SNI filtering: hvad privatlivsbevidste VPN-brugere b\u00f8r vide[:no]Encrypted Client Hello og SNI filtering: hva personvernbevisste VPN-brukere b\u00f8r vite[:fi]Encrypted Client Hello ja SNI filtering: mit\u00e4 yksityisyydest\u00e4 v\u00e4litt\u00e4vien VPN-k\u00e4ytt\u00e4jien tulisi tiet\u00e4\u00e4[:sr]Encrypted Client Hello i SNI filtering: \u0161ta korisnici VPN-a kojima je va\u017ena privatnost treba da znaju[:hr]Encrypted Client Hello i SNI filtering: \u0161to korisnici VPN-a kojima je va\u017ena privatnost trebaju znati[:bg]Encrypted Client Hello \u0438 SNI filtering: \u043a\u0430\u043a\u0432\u043e \u0442\u0440\u044f\u0431\u0432\u0430 \u0434\u0430 \u0437\u043d\u0430\u044f\u0442 VPN \u043f\u043e\u0442\u0440\u0435\u0431\u0438\u0442\u0435\u043b\u0438\u0442\u0435, \u043a\u043e\u0438\u0442\u043e \u0434\u044a\u0440\u0436\u0430\u0442 \u043d\u0430 \u043f\u043e\u0432\u0435\u0440\u0438\u0442\u0435\u043b\u043d\u043e\u0441\u0442\u0442\u0430[:sk]Encrypted Client Hello a SNI filtering: \u010do by mali vedie\u0165 pou\u017e\u00edvatelia VPN, ktor\u00fdm z\u00e1le\u017e\u00ed na s\u00fakrom\u00ed[:kk]Encrypted Client Hello \u0436\u04d9\u043d\u0435 SNI filtering: \u049b\u04b1\u043f\u0438\u044f\u043b\u044b\u043b\u044b\u049b\u049b\u0430 \u043c\u04d9\u043d \u0431\u0435\u0440\u0435\u0442\u0456\u043d VPN \u043f\u0430\u0439\u0434\u0430\u043b\u0430\u043d\u0443\u0448\u044b\u043b\u0430\u0440\u044b \u043d\u0435\u043d\u0456 \u0431\u0456\u043b\u0443\u0456 \u043a\u0435\u0440\u0435\u043a[:uz]Encrypted Client Hello va SNI filtering: maxfiylikka e\u2019tibor beradigan VPN foydalanuvchilari nimalarni bilishi kerak[:az]Encrypted Client Hello v\u0259 SNI filtering: m\u0259xfiliy\u0259 \u00f6n\u0259m ver\u0259n VPN istifad\u0259\u00e7il\u0259ri n\u0259 bilm\u0259lidir[:my]Encrypted Client Hello \u1014\u103e\u1004\u1037\u103a SNI filtering: privacy \u1002\u101b\u102f\u1005\u102d\u102f\u1000\u103a\u101e\u1031\u102c VPN \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u1030\u1019\u103b\u102c\u1038 \u101e\u102d\u101e\u1004\u1037\u103a\u101e\u100a\u103a\u1019\u103b\u102c\u1038[:sw]Encrypted Client Hello na SNI filtering: watumiaji wa VPN wanaojali faragha wanapaswa kujua nini[:ha]Encrypted Client Hello da SNI filtering: abin da masu amfani da VPN masu kula da sirri ya kamata su sani[:am]Encrypted Client Hello \u12a5\u1293 SNI filtering: \u130d\u120b\u12ca\u1290\u1275\u1295 \u12e8\u121a\u1320\u1290\u1240\u1241 VPN \u1270\u1320\u1243\u121a\u12ce\u127d \u121b\u12c8\u1245 \u12eb\u1208\u1263\u1278\u12cd[:] - VPN Unlimited for Mac","og_description":"Encrypted Client Hello gi\u00fap che gi\u1ea5u m\u1ed9t ph\u1ea7n metadata HTTPS t\u1eebng l\u1ed9 trong th\u1eddi gian d\u00e0i: hostname g\u1eedi trong TLS handshake. 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