{"id":267019,"date":"2025-03-15T03:09:53","date_gmt":"2025-03-15T00:09:53","guid":{"rendered":"https:\/\/freevpnplanet.com\/blog\/vpn-kill-switch-what-is-it-how-to-check-its-working-properly\/"},"modified":"2026-09-21T11:31:40","modified_gmt":"2026-09-21T08:31:40","slug":"vpn-kill-switch-what-is-it-how-to-check-its-working-properly","status":"publish","type":"post","link":"https:\/\/freevpnplanet.com\/vi\/blog\/vpn-kill-switch-what-is-it-how-to-check-its-working-properly\/","title":{"rendered":"Kill Switch c\u1ee7a VPN l\u00e0 g\u00ec?"},"content":{"rendered":"\n

M\u1ed9t VPN kill switch l\u00e0 m\u1ed9t t\u00ednh n\u0103ng b\u1ea3o m\u1eadt gi\u00fap ng\u1eaft k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n ngay khi k\u1ebft n\u1ed1i VPN b\u1ecb gi\u00e1n \u0111o\u1ea1n. Kh\u00f4ng c\u1ea3nh b\u00e1o, kh\u00f4ng tr\u00ec ho\u00e3n \u2014 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a b\u1ea1n s\u1ebd d\u1eebng l\u1ea1i cho \u0111\u1ebfn khi VPN ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i.<\/p>\n\n

N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, vi\u1ec7c ng\u1eaft k\u1ebft n\u1ed1i VPN \u0111\u1ed9t ng\u1ed9t s\u1ebd \u0111\u1ec3 l\u1ed9 \u0111\u1ecba ch\u1ec9 IP th\u1eadt v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a c\u1ee7a b\u1ea1n cho b\u1ea5t k\u1ef3 ai \u0111ang theo d\u00f5i \u2014 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet, m\u1ea1ng b\u1ea1n \u0111ang truy c\u1eadp ho\u1eb7c c\u00e1c b\u00ean th\u1ee9 ba. Kill switch s\u1ebd t\u1ef1 \u0111\u1ed9ng l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng \u0111\u00f3.<\/p>\n\n

\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng VPN thi\u1ebft th\u1ef1c nh\u1ea5t m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 c\u00f3 v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng ho\u00e0n to\u00e0n trong n\u1ec1n.<\/p>\n\n

C\u00e1ch m\u1ed9t VPN Kill Switch ho\u1ea1t \u0111\u1ed9ng<\/h2>\n\n

Khi b\u1ea1n s\u1eed d\u1ee5ng VPN, t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a b\u1ea1n s\u1ebd \u0111i qua m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n VPN tunnel \u0111\u00e3 <\/a>\u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u1ebfn m\u1ed9t VPN server. \u0110\u1ecba ch\u1ec9 IP th\u1eadt c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c \u1ea9n \u0111i \u2014 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a server l\u00e0 nh\u1eefng g\u00ec th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i nh\u00ecn th\u1ea5y.<\/p>\n\n

K\u1ebft n\u1ed1i VPN kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u1ed5n \u0111\u1ecbnh. S\u1ef1 c\u1ed1 m\u00e1y ch\u1ee7, chuy\u1ec3n \u0111\u1ed5i m\u1ea1ng ho\u1eb7c m\u1ea5t t\u00edn hi\u1ec7u ng\u1eafn c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n \u0111\u01b0\u1eddng truy\u1ec1n VPN m\u00e0 b\u1ea1n kh\u00f4ng h\u1ec1 hay bi\u1ebft. Trong nh\u1eefng gi\u00e2y \u0111\u00f3, thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n s\u1ebd quay l\u1ea1i k\u1ebft n\u1ed1i internet th\u00f4ng th\u01b0\u1eddng \u2014 kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 b\u1ecb l\u1ed9 th\u00f4ng tin.<\/p>\n\n

Kill switch gi\u00e1m s\u00e1t k\u1ebft n\u1ed1i VPN c\u1ee7a b\u1ea1n trong th\u1eddi gian th\u1ef1c. Ngay khi k\u1ebft n\u1ed1i VPN b\u1ecb m\u1ea5t, n\u00f3 s\u1ebd ch\u1eb7n t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng internet. N\u00f3 duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng cho \u0111\u1ebfn khi VPN k\u1ebft n\u1ed1i l\u1ea1i, sau \u0111\u00f3 t\u1ef1 \u0111\u1ed9ng kh\u00f4i ph\u1ee5c k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n. B\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0m g\u00ec c\u1ea3.<\/p>\n\n

C\u00e1c lo\u1ea1i VPN Kill Switches<\/h2>\n\n

VPN kill switch c\u00f3 hai lo\u1ea1i ch\u00ednh. Vi\u1ec7c b\u1ea1n c\u1ea7n lo\u1ea1i n\u00e0o t\u00f9y thu\u1ed9c v\u00e0o c\u00e1ch b\u1ea1n s\u1eed d\u1ee5ng VPN.<\/p>\n\n

C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i (Kill Switch) c\u1ea5p h\u1ec7 th\u1ed1ng<\/h3>\n\n

T\u00ednh n\u0103ng system-level kill switch s\u1ebd ng\u1eaft to\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng internet tr\u00ean thi\u1ebft b\u1ecb n\u1ebfu k\u1ebft n\u1ed1i VPN b\u1ecb gi\u00e1n \u0111o\u1ea1n \u2014 bao g\u1ed3m m\u1ecdi \u1ee9ng d\u1ee5ng, m\u1ecdi tr\u00ecnh duy\u1ec7t v\u00e0 m\u1ecdi quy tr\u00ecnh ch\u1ea1y ng\u1ea7m. Kh\u00f4ng c\u00f3 g\u00ec c\u00f3 th\u1ec3 truy\u1ec1n qua n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 b\u1ea3o v\u1ec7 c\u1ee7a VPN.<\/p>\n\n

\u0110\u00e2y l\u00e0 t\u00f9y ch\u1ecdn k\u1ef9 l\u01b0\u1ee1ng h\u01a1n. N\u1ebfu quy\u1ec1n ri\u00eang t\u01b0 l\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u1ecdi th\u1ee9 tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n, system-level VPN kill switch l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn.<\/p>\n\n

Application-Level Kill Switch (C\u00f4ng t\u1eafc ng\u1eaft \u1edf c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng)<\/h3>\n\n

T\u00ednh n\u0103ng application-level kill switch cho ph\u00e9p b\u1ea1n ch\u1ecdn \u1ee9ng d\u1ee5ng n\u00e0o s\u1ebd b\u1ecb ch\u1eb7n n\u1ebfu VPN ng\u1eaft k\u1ebft n\u1ed1i. M\u1ecdi th\u1ee9 kh\u00e1c v\u1eabn ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n

\u0110i\u1ec1u n\u00e0y h\u1eefu \u00edch khi b\u1ea1n mu\u1ed1n b\u1ea3o v\u1ec7 ho\u1ea1t \u0111\u1ed9ng c\u1ee5 th\u1ec3 \u2014 m\u1ed9t torrent client, m\u1ed9t \u1ee9ng d\u1ee5ng nh\u1eafn <\/a>tin, m\u1ed9t c\u00f4ng c\u1ee5 l\u00e0m vi\u1ec7c \u2014 m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n to\u00e0n b\u1ed9 k\u1ebft n\u1ed1i c\u1ee7a m\u00ecnh. Tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 v\u1eabn tr\u1ef1c tuy\u1ebfn trong khi m\u1ed9t \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m s\u1ebd ng\u1eaft k\u1ebft n\u1ed1i cho \u0111\u1ebfn khi VPN k\u1ebft n\u1ed1i l\u1ea1i.<\/p>\n\n

C\u1ea3 hai lo\u1ea1i kill switch \u0111\u1ec1u b\u1ea3o v\u1ec7 \u0111\u1ecba ch\u1ec9 IP v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 \u1edf ph\u1ea1m vi.<\/p>\n\n

T\u1ea1i sao b\u1ea1n c\u1ea7n VPN Kill Switch<\/h2>\n\n

VPN kill switch l\u00e0 t\u00ednh n\u0103ng thi\u1ebft y\u1ebfu n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng VPN cho c\u00e1c nhu c\u1ea7u kh\u00e1c thay v\u00ec ch\u1ec9 duy\u1ec7t web th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n

K\u1ebft n\u1ed1i VPN b\u1ecb ng\u1eaft. \u0110i\u1ec1u n\u00e0y kh\u00f4ng th\u01b0\u1eddng xuy\u00ean x\u1ea3y ra v\u1edbi m\u1ed9t VPN \u0111\u00e1ng tin c\u1eady, nh\u01b0ng n\u00f3 v\u1eabn x\u1ea3y ra \u2014 do s\u1ef1 c\u1ed1 m\u00e1y ch\u1ee7, Wi-Fi kh\u00f4ng \u1ed5n \u0111\u1ecbnh, ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c m\u1ea1ng. N\u1ebfu kh\u00f4ng c\u00f3 kill switch, nh\u1eefng th\u1eddi \u0111i\u1ec3m m\u1ea5t k\u1ebft n\u1ed1i \u0111\u00f3 s\u1ebd khi\u1ebfn b\u1ea1n b\u1ecb l\u1ed9 th\u00f4ng tin m\u00e0 kh\u00f4ng c\u00f3 c\u1ea3nh b\u00e1o.<\/p>\n\n

Tr\u00ean Wi-Fi c\u00f4ng c\u1ed9ng, s\u1ef1 <\/a>s\u01a1 h\u1edf \u0111\u00f3 di\u1ec5n ra ngay l\u1eadp t\u1ee9c. S\u00e2n bay, qu\u00e1n c\u00e0 ph\u00ea v\u00e0 kh\u00e1ch s\u1ea1n v\u1eadn h\u00e0nh c\u00e1c m\u1ea1ng m\u1edf n\u01a1i nh\u1eefng ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a. M\u1ed9t VPN c\u00f3 kill switch gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n ngay c\u1ea3 khi k\u1ebft n\u1ed1i g\u1eb7p tr\u1ee5c tr\u1eb7c.<\/p>\n\n

\u0110\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c t\u1eeb xa, VPN kill switch c\u0169ng r\u1ea5t quan tr\u1ecdng. Nhi\u1ec1u c\u00f4ng ty y\u00eau c\u1ea7u VPN \u0111\u1ec3 truy c\u1eadp v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng n\u1ed9i b\u1ed9. N\u1ebfu VPN b\u1ecb ng\u1eaft gi\u1eefa ch\u1eebng, d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi truy\u1ec1n qua m\u1ed9t k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. Kill switch gi\u00fap ng\u0103n ch\u1eb7n \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n

M\u1ed9t VPN kh\u00f4ng c\u00f3 kill switch cung c\u1ea5p s\u1ef1 b\u1ea3o v\u1ec7 t\u1ed1t trong h\u1ea7u h\u1ebft th\u1eddi gian \u2014 nh\u01b0ng kh\u00f4ng ph\u1ea3i m\u1ecdi l\u00fac. Kill switch l\u1ea5p \u0111\u1ea7y nh\u1eefng kho\u1ea3ng tr\u1ed1ng \u0111\u00f3.<\/p>\n\n

C\u00e1ch b\u1eadt Kill Switch trong Planet VPN<\/h2>\n\n

Planet VPN <\/a>bao g\u1ed3m m\u1ed9t kill switch t\u00edch h\u1ee3p trong phi\u00ean b\u1ea3n premium. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch b\u1eadt t\u00ednh n\u0103ng n\u00e0y:<\/p>\n\n

    \n
  1. M\u1edf \u1ee9ng d\u1ee5ng Planet VPN tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n
  2. \u0110i t\u1edbi Settings.<\/strong><\/li>\n\n\n\n
  3. T\u00ecm n\u00fat g\u1ea1t Network Kill <\/strong>Switch v\u00e0 b\u1eadt n\u00f3 l\u00ean.<\/li>\n\n\n\n
  4. K\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 VPN nh\u01b0 b\u00ecnh th\u01b0\u1eddng.<\/li>\n<\/ol>\n\n

    Sau khi \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, kill switch s\u1ebd t\u1ef1 \u0111\u1ed9ng ch\u1ea1y. N\u1ebfu k\u1ebft n\u1ed1i VPN b\u1ecb ng\u1eaft b\u1ea5t ng\u1edd, internet c\u1ee7a b\u1ea1n s\u1ebd b\u1ecb c\u1eaft cho \u0111\u1ebfn khi VPN k\u1ebft n\u1ed1i l\u1ea1i. B\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i theo d\u00f5i b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec \u2014 n\u00f3 s\u1ebd t\u1ef1 x\u1eed l\u00fd cho b\u1ea1n.<\/p>\n\n

    \u0110\u1ec3 b\u1eadt VPN kill switch tr\u00ean \u1ee9ng d\u1ee5ng desktop, c\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n c\u0169ng t\u01b0\u01a1ng t\u1ef1. M\u1edf VPN settings, g\u1ea1t thanh ch\u1ecdn kill switch, v\u00e0 k\u1ebft n\u1ed1i.<\/p>\n\n

    C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n\n

    B\u1ea1n c\u00f3 n\u00ean b\u1eadt VPN kill switch kh\u00f4ng?<\/strong><\/p>\n\n

    C\u00f3 \u2014 \u0111\u1eb7c bi\u1ec7t n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng VPN tr\u00ean c\u00e1c m\u1ea1ng c\u00f4ng c\u1ed9ng, cho c\u00f4ng vi\u1ec7c, ho\u1eb7c b\u1ea5t c\u1ee9 khi n\u00e0o quy\u1ec1n ri\u00eang t\u01b0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u1ea1n. Kill switch b\u1ea3o v\u1ec7 b\u1ea1n trong nh\u1eefng kho\u1ea3nh kh\u1eafc ng\u1eafn ng\u1ee7i khi k\u1ebft n\u1ed1i VPN b\u1ecb gi\u00e1n \u0111o\u1ea1n. Kh\u00f4ng c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0o khi b\u1eadt t\u00ednh n\u0103ng n\u00e0y. \u0110i\u1ec1u duy nh\u1ea5t b\u1ea1n s\u1ebd nh\u1eadn th\u1ea5y l\u00e0 m\u1ea5t internet t\u1ea1m th\u1eddi n\u1ebfu VPN c\u1ee7a b\u1ea1n b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i, \u0111\u00f3 ch\u00ednh x\u00e1c l\u00e0 m\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3.<\/p>\n\n

    Kill switch c\u00f3 t\u00e1c d\u1ee5ng g\u00ec tr\u00ean m\u1ed9t VPN?<\/strong><\/p>\n\n

    N\u00f3 ch\u1eb7n k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n ngay khi VPN ng\u1eaft k\u1ebft n\u1ed1i. \u0110i\u1ec1u n\u00e0y ng\u0103n \u0111\u1ecba ch\u1ec9 IP th\u1ef1c v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ch\u01b0a \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a c\u1ee7a b\u1ea1n b\u1ecb l\u1ed9 trong qu\u00e1 tr\u00ecnh r\u1edbt m\u1ea1ng. Khi VPN k\u1ebft n\u1ed1i l\u1ea1i, k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c kh\u00f4i ph\u1ee5c t\u1ef1 \u0111\u1ed9ng.<\/p>\n\n

    VPN kill switch l\u00e0m g\u00ec n\u1ebfu VPN b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i?<\/strong><\/p>\n\n

    T\u00ednh n\u0103ng kill switch t\u1ef1 \u0111\u1ed9ng ng\u1eaft l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp internet tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n \u2014 ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i kill switch \u2014 v\u00e0 duy tr\u00ec tr\u1ea1ng th\u00e1i \u0111\u00f3 cho \u0111\u1ebfn khi \u0111\u01b0\u1eddng truy\u1ec1n VPN \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp l\u1ea1i. \u0110\u1ecba ch\u1ec9 IP c\u1ee7a b\u1ea1n lu\u00f4n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 trong su\u1ed1t qu\u00e1 tr\u00ecnh n\u00e0y. B\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i k\u1ebft n\u1ed1i l\u1ea1i ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec theo c\u00e1ch th\u1ee7 c\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

    M\u1ed9t VPN kill switch l\u00e0 m\u1ed9t t\u00ednh n\u0103ng b\u1ea3o m\u1eadt gi\u00fap ng\u1eaft k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n ngay khi k\u1ebft n\u1ed1i VPN b\u1ecb gi\u00e1n \u0111o\u1ea1n. Kh\u00f4ng c\u1ea3nh b\u00e1o, kh\u00f4ng tr\u00ec ho\u00e3n \u2014 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a b\u1ea1n s\u1ebd d\u1eebng l\u1ea1i cho \u0111\u1ebfn khi VPN ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i. N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, vi\u1ec7c ng\u1eaft…<\/p>\n","protected":false},"author":72,"featured_media":267120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[713],"tags":[],"class_list":["post-267019","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vpn-vi"],"yoast_head":"\nVPN Kill Switch l\u00e0 g\u00ec? | Planet VPN<\/title>\n<meta name=\"description\" content=\"T\u00ednh n\u0103ng VPN kill switch r\u1ea5t quan tr\u1ecdng. 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