{"id":479016,"date":"2023-08-09T10:01:33","date_gmt":"2023-08-09T10:01:33","guid":{"rendered":""},"modified":"2023-09-05T11:18:01","modified_gmt":"2023-09-05T11:18:01","slug":"sip-proxy","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/sip-proxy\/","title":{"rendered":"proxy SIP"},"content":{"rendered":"

Proxy SIP (Giao th\u1ee9c kh\u1edfi t\u1ea1o phi\u00ean) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a m\u1ea1ng truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c thi\u1ebft l\u1eadp, b\u1ea3o tr\u00ec v\u00e0 ch\u1ea5m d\u1ee9t c\u00e1c phi\u00ean \u0111a ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 cu\u1ed9c g\u1ecdi tho\u1ea1i, h\u1ed9i ngh\u1ecb video v\u00e0 nh\u1eafn tin t\u1ee9c th\u1eddi. Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian, proxy SIP x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ecbnh tuy\u1ebfn tin nh\u1eafn SIP gi\u1eefa ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb, \u0111\u1ea3m b\u1ea3o li\u00ean l\u1ea1c th\u00f4ng su\u1ed1t v\u00e0 \u0111\u00e1ng tin c\u1eady tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau. Trong b\u00e0i vi\u1ebft to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i \u0111i s\u00e2u v\u00e0o l\u1ecbch s\u1eed, ho\u1ea1t \u0111\u1ed9ng, t\u00ednh n\u0103ng, lo\u1ea1i v\u00e0 tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai c\u1ee7a proxy SIP.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a SIP Proxy v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean nh\u1eafc \u0111\u1ebfn n\u00f3<\/h2>\n

Ngu\u1ed3n g\u1ed1c c\u1ee7a proxy SIP c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1990 khi nhu c\u1ea7u v\u1ec1 m\u1ed9t giao th\u1ee9c chu\u1ea9n h\u00f3a \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd c\u00e1c phi\u00ean \u0111a ph\u01b0\u01a1ng ti\u1ec7n tr\u1edf n\u00ean r\u00f5 r\u00e0ng v\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn ng\u00e0y c\u00e0ng t\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 Tho\u1ea1i qua IP (VoIP). N\u0103m 1996, Mark Handley, Henning Schulzrinne, Eve Schooler v\u00e0 Jonathan Rosenberg \u0111\u00e3 gi\u1edbi thi\u1ec7u Giao th\u1ee9c kh\u1edfi t\u1ea1o phi\u00ean (SIP) nh\u01b0 m\u1ed9t giao th\u1ee9c b\u00e1o hi\u1ec7u \u0111\u1ec3 b\u1eaft \u0111\u1ea7u, s\u1eeda \u0111\u1ed5i v\u00e0 ch\u1ea5m d\u1ee9t c\u00e1c phi\u00ean th\u1eddi gian th\u1ef1c li\u00ean quan \u0111\u1ebfn video, gi\u1ecdng n\u00f3i v\u00e0 nh\u1eafn tin. SIP mang \u0111\u1ebfn s\u1ef1 \u0111\u01a1n gi\u1ea3n v\u00e0 linh ho\u1ea1t cho vi\u1ec7c b\u1eaft \u0111\u1ea7u phi\u00ean, l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m \u0111i\u1ec7n tho\u1ea1i, h\u1ed9i ngh\u1ecb video v\u00e0 th\u00f4ng tin hi\u1ec7n di\u1ec7n.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 SIP Proxy: M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 SIP Proxy<\/h2>\n

Proxy SIP, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00e1y ch\u1ee7 SIP ho\u1eb7c c\u00f4ng ty \u0111\u0103ng k\u00fd SIP, \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong c\u00e1c h\u1ec7 th\u1ed1ng li\u00ean l\u1ea1c d\u1ef1a tr\u00ean SIP. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp \u1ee9ng d\u1ee5ng c\u1ee7a m\u00f4 h\u00ecnh OSI, t\u1eadp trung x\u1eed l\u00fd c\u00e1c b\u1ea3n tin b\u00e1o hi\u1ec7u SIP gi\u1eefa ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb. C\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3 bao g\u1ed3m v\u1ecb tr\u00ed ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ecbnh tuy\u1ebfn cu\u1ed9c g\u1ecdi, d\u1ecbch giao th\u1ee9c v\u00e0 b\u1ea3o m\u1eadt. Khi m\u00e1y kh\u00e1ch SIP mu\u1ed1n b\u1eaft \u0111\u1ea7u phi\u00ean v\u1edbi m\u00e1y kh\u00e1ch kh\u00e1c, n\u00f3 s\u1ebd g\u1eedi y\u00eau c\u1ea7u SIP INVITE \u0111\u1ebfn m\u00e1y ch\u1ee7 proxy SIP, sau \u0111\u00f3 m\u00e1y ch\u1ee7 proxy SIP s\u1ebd x\u1eed l\u00fd y\u00eau c\u1ea7u v\u00e0 chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u00f3 \u0111\u1ebfn \u0111\u00edch th\u00edch h\u1ee3p.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Proxy SIP: C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Proxy SIP<\/h2>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a proxy SIP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u b\u1eb1ng c\u00e1ch chia nh\u1ecf c\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu v\u00e0 t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang:<\/p>\n

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    T\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng SIP (UA)<\/strong>: SIP UA l\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 logic \u0111\u1ea1i di\u1ec7n cho m\u00e1y kh\u00e1ch SIP ho\u1eb7c \u0111i\u1ec3m cu\u1ed1i, ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o v\u00e0 nh\u1eadn tin nh\u1eafn SIP. C\u00f3 hai lo\u1ea1i SIP UA: M\u00e1y kh\u00e1ch t\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng (UAC) v\u00e0 M\u00e1y ch\u1ee7 t\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng (UAS).<\/p>\n<\/li>\n

  2. \n

    M\u00e1y ch\u1ee7 proxy SIP<\/strong>: C\u1ed1t l\u00f5i c\u1ee7a proxy SIP, m\u00e1y ch\u1ee7 n\u00e0y nh\u1eadn c\u00e1c y\u00eau c\u1ea7u SIP t\u1eeb UAC v\u00e0 chuy\u1ec3n ti\u1ebfp ch\u00fang \u0111\u1ebfn UAS d\u1ef1 \u0111\u1ecbnh d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 \u0111\u00edch.<\/p>\n<\/li>\n

  3. \n

    M\u00e1y ch\u1ee7 \u0111\u0103ng k\u00fd<\/strong>: M\u00e1y ch\u1ee7 \u0111\u0103ng k\u00fd ch\u1ecbu tr\u00e1ch nhi\u1ec7m v\u1ec1 v\u1ecb tr\u00ed v\u00e0 \u0111\u0103ng k\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. Khi ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb mu\u1ed1n c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c t\u1ea1i m\u1ed9t \u0111\u1ecba ch\u1ec9 c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: nh\u1ea5m nh\u00e1p:user@domain.com<\/a>), n\u00f3 s\u1ebd \u0111\u0103ng k\u00fd v\u1ecb tr\u00ed hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3 v\u1edbi m\u00e1y ch\u1ee7 \u0111\u0103ng k\u00fd.<\/p>\n<\/li>\n

  4. \n

    M\u00e1y ch\u1ee7 chuy\u1ec3n h\u01b0\u1edbng<\/strong>: M\u00e1y ch\u1ee7 chuy\u1ec3n h\u01b0\u1edbng th\u00f4ng b\u00e1o cho kh\u00e1ch h\u00e0ng v\u1ec1 v\u1ecb tr\u00ed hi\u1ec7n t\u1ea1i c\u1ee7a b\u00ean \u0111\u01b0\u1ee3c g\u1ecdi n\u1ebfu n\u00f3 \u0111\u00e3 chuy\u1ec3n \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 m\u1edbi.<\/p>\n<\/li>\n

  5. \n

    T\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng quay l\u1ea1i (B2BUA)<\/strong>: B2BUA \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa hai \u0111i\u1ec3m cu\u1ed1i SIP, chuy\u1ec3n ti\u1ebfp v\u00e0 ki\u1ec3m so\u00e1t li\u00ean l\u1ea1c gi\u1eefa ch\u00fang. N\u00f3 cho ph\u00e9p thao t\u00e1c cu\u1ed9c g\u1ecdi, chuy\u1ec3n cu\u1ed9c g\u1ecdi v\u00e0 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao nh\u01b0 ghi \u00e2m cu\u1ed9c g\u1ecdi.<\/p>\n<\/li>\n<\/ol>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a SIP Proxy<\/h2>\n

    Proxy SIP cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng c\u1ea7n thi\u1ebft g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a giao ti\u1ebfp th\u1eddi gian th\u1ef1c:<\/p>\n

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      \u0110\u1ecbnh tuy\u1ebfn cu\u1ed9c g\u1ecdi<\/strong>: Proxy SIP \u0111\u1ecbnh tuy\u1ebfn c\u00e1c tin nh\u1eafn SIP m\u1ed9t c\u00e1ch th\u00f4ng minh d\u1ef1a tr\u00ean v\u1ecb tr\u00ed c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i li\u1ec1n m\u1ea1ch gi\u1eefa c\u00e1c m\u1ea1ng v\u00e0 mi\u1ec1n kh\u00e1c nhau.<\/p>\n<\/li>\n

    2. \n

      \u1ea8n c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng<\/strong>: Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian, proxy SIP che gi\u1ea5u s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ea1ng c\u01a1 b\u1ea3n, cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0.<\/p>\n<\/li>\n

    3. \n

      C\u00e2n b\u1eb1ng t\u1ea3i<\/strong>: M\u00e1y ch\u1ee7 SIP l\u01b0u l\u01b0\u1ee3ng cao c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng proxy SIP \u0111\u1ec3 ph\u00e2n ph\u1ed1i t\u1ea3i tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 ph\u1ee5 tr\u1ee3, ng\u0103n ng\u1eeba t\u1eafc ngh\u1ebdn v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u01b0\u1ee3t m\u00e0.<\/p>\n<\/li>\n

    4. \n

      Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c giao th\u1ee9c<\/strong>: Proxy SIP t\u1ea1o \u0111i\u1ec1u ki\u1ec7n li\u00ean l\u1ea1c gi\u1eefa m\u1ea1ng SIP v\u00e0 m\u1ea1ng kh\u00f4ng ph\u1ea3i SIP b\u1eb1ng c\u00e1ch d\u1ecbch c\u00e1c giao th\u1ee9c v\u00e0 x\u1eed l\u00fd c\u00e1c ph\u01b0\u01a1ng th\u1ee9c b\u00e1o hi\u1ec7u \u0111a d\u1ea1ng.<\/p>\n<\/li>\n

    5. \n

      Ki\u1ec3m so\u00e1t an ninh v\u00e0 truy c\u1eadp<\/strong>: M\u00e1y ch\u1ee7 proxy SIP tri\u1ec3n khai c\u00e1c c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u00e1c th\u1ef1c, m\u00e3 h\u00f3a v\u00e0 ki\u1ec3m so\u00e1t truy c\u1eadp, \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i proxy SIP<\/h2>\n

      Proxy SIP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i d\u1ef1a tr\u00ean ch\u1ee9c n\u0103ng v\u00e0 c\u00e1ch tri\u1ec3n khai c\u1ee7a ch\u00fang:<\/p>\n\n\n\n\n\n\n\n\n\n
      Ki\u1ec3u<\/strong><\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n
      Proxy kh\u00f4ng qu\u1ed1c t\u1ecbch<\/strong><\/td>\nProxy kh\u00f4ng tr\u1ea1ng th\u00e1i x\u1eed l\u00fd t\u1eebng y\u00eau c\u1ea7u SIP m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp m\u00e0 kh\u00f4ng duy tr\u00ec b\u1ea5t k\u1ef3 th\u00f4ng tin tr\u1ea1ng th\u00e1i n\u00e0o.<\/td>\n<\/tr>\n
      Proxy tr\u1ea1ng th\u00e1i<\/strong><\/td>\nProxy tr\u1ea1ng th\u00e1i l\u01b0u gi\u1eef th\u00f4ng tin tr\u1ea1ng th\u00e1i phi\u00ean, cho ph\u00e9p ch\u00fang \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh h\u01a1n.<\/td>\n<\/tr>\n
      Proxy \u1ee9ng d\u1ee5ng<\/strong><\/td>\nProxy \u1ee9ng d\u1ee5ng cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u1ed5 sung, nh\u01b0 ghi \u00e2m cu\u1ed9c g\u1ecdi, h\u1ed9i ngh\u1ecb v\u00e0 x\u1eed l\u00fd ph\u01b0\u01a1ng ti\u1ec7n.<\/td>\n<\/tr>\n
      M\u1edf proxy<\/strong><\/td>\nProxy m\u1edf cho ph\u00e9p c\u00e1c y\u00eau c\u1ea7u SIP t\u1eeb b\u1ea5t k\u1ef3 ngu\u1ed3n n\u00e0o, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng sai m\u1ee5c \u0111\u00edch v\u00e0 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt.<\/td>\n<\/tr>\n
      Proxy \u0111\u00e1ng tin c\u1eady<\/strong><\/td>\nProxy \u0111\u00e1ng tin c\u1eady \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ec3 ch\u1ec9 ch\u1ea5p nh\u1eadn y\u00eau c\u1ea7u t\u1eeb c\u00e1c ngu\u1ed3n c\u1ee5 th\u1ec3, \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng Proxy SIP, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

      Proxy SIP t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n

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        \u0110i\u1ec7n tho\u1ea1i VoIP<\/strong>: SIP proxy \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n tho\u1ea1i Tho\u1ea1i qua IP (VoIP) \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd c\u00e1c cu\u1ed9c g\u1ecdi tho\u1ea1i.<\/p>\n<\/li>\n

      2. \n

        truy\u1ec1n th\u00f4ng H\u1ee3p nh\u1ea5t<\/strong>: SIP proxy cho ph\u00e9p t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch nhi\u1ec1u d\u1ecbch v\u1ee5 li\u00ean l\u1ea1c kh\u00e1c nhau nh\u01b0 tho\u1ea1i, video v\u00e0 nh\u1eafn tin v\u00e0o m\u1ed9t n\u1ec1n t\u1ea3ng h\u1ee3p nh\u1ea5t.<\/p>\n<\/li>\n

      3. \n

        WebRTC<\/strong>: Proxy SIP h\u1ed7 tr\u1ee3 Giao ti\u1ebfp th\u1eddi gian th\u1ef1c tr\u00ean web (WebRTC) b\u1eb1ng c\u00e1ch x\u1eed l\u00fd quy tr\u00ecnh b\u00e1o hi\u1ec7u gi\u1eefa c\u00e1c tr\u00ecnh duy\u1ec7t d\u00e0nh cho h\u1ed9i ngh\u1ecb truy\u1ec1n h\u00ecnh v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c th\u1eddi gian th\u1ef1c kh\u00e1c.<\/p>\n<\/li>\n

      4. \n

        M\u1edf r\u1ed9ng quy m\u00f4 v\u00e0 d\u1ef1 ph\u00f2ng<\/strong>: M\u1ed9t th\u00e1ch th\u1ee9c chung l\u00e0 m\u1edf r\u1ed9ng quy m\u00f4 m\u00e1y ch\u1ee7 proxy SIP \u0111\u1ec3 x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng l\u1edbn ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh d\u1ef1 ph\u00f2ng \u0111\u1ec3 c\u00f3 t\u00ednh s\u1eb5n s\u00e0ng cao. B\u1ed9 c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 k\u1ef9 thu\u1eadt ph\u00e2n c\u1ee5m m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n

      5. \n

        T\u01b0\u1eddng l\u1eeda v\u00e0 truy\u1ec1n t\u1ea3i NAT<\/strong>: Giao ti\u1ebfp SIP c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n khi v\u01b0\u1ee3t qua t\u01b0\u1eddng l\u1eeda v\u00e0 thi\u1ebft b\u1ecb D\u1ecbch \u0110\u1ecba ch\u1ec9 M\u1ea1ng (NAT). Vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 STUN (Ti\u1ec7n \u00edch truy\u1ec1n t\u1ea3i phi\u00ean cho NAT) v\u00e0 TURN (Traversal s\u1eed d\u1ee5ng r\u01a1le xung quanh NAT) c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n<\/ol>\n

        C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 nh\u1eefng so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n

        D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh SIP proxy v\u1edbi m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u0129nh v\u1ef1c m\u1ea1ng truy\u1ec1n th\u00f4ng:<\/p>\n\n\n\n\n\n\n\n\n
        Thu\u1eadt ng\u1eef<\/strong><\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n
        Proxy SIP<\/strong><\/td>\nX\u1eed l\u00fd t\u00edn hi\u1ec7u SIP gi\u1eefa c\u00e1c m\u00e1y kh\u00e1ch, cho ph\u00e9p thi\u1ebft l\u1eadp phi\u00ean v\u00e0 \u0111\u1ecbnh tuy\u1ebfn cu\u1ed9c g\u1ecdi.<\/td>\n<\/tr>\n
        Nh\u00e0 \u0111\u0103ng k\u00fd SIP<\/strong><\/td>\nQu\u1ea3n l\u00fd th\u00f4ng tin \u0111\u0103ng k\u00fd v\u00e0 v\u1ecb tr\u00ed c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn cu\u1ed9c g\u1ecdi \u0111\u1ebfn ng\u01b0\u1eddi nh\u1eadn.<\/td>\n<\/tr>\n
        SIP B2BUA<\/strong><\/td>\nHo\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian gi\u1eefa hai \u0111i\u1ec3m cu\u1ed1i SIP, cho ph\u00e9p thao t\u00e1c cu\u1ed9c g\u1ecdi n\u00e2ng cao.<\/td>\n<\/tr>\n
        M\u00e1y ch\u1ee7 proxy SIP<\/strong><\/td>\n\u0110\u1ec1 c\u1eadp \u0111\u1ebfn m\u00e1y ch\u1ee7 d\u1ef1a tr\u00ean ph\u1ea7n c\u1ee9ng ho\u1eb7c ph\u1ea7n m\u1ec1m ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd c\u00e1c tin nh\u1eafn b\u00e1o hi\u1ec7u SIP.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn SIP Proxy<\/h2>\n

        Khi c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, proxy SIP \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng s\u1ebd \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ecbnh h\u00ecnh t\u01b0\u01a1ng lai c\u1ee7a truy\u1ec1n th\u00f4ng \u0111a ph\u01b0\u01a1ng ti\u1ec7n th\u1eddi gian th\u1ef1c. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n v\u00e0 c\u00f4ng ngh\u1ec7 ch\u00ednh c\u1ea7n theo d\u00f5i bao g\u1ed3m:<\/p>\n

          \n
        1. \n

          SIP qua WebSockets<\/strong>: T\u1eadn d\u1ee5ng c\u00f4ng ngh\u1ec7 WebSocket \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u SIP cho ph\u00e9p t\u00edch h\u1ee3p d\u1ec5 d\u00e0ng h\u01a1n v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 d\u1ecbch v\u1ee5 WebRTC.<\/p>\n<\/li>\n

        2. \n

          Giao th\u1ee9c b\u1ea3o m\u1eadt n\u00e2ng cao<\/strong>: C\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt n\u00e2ng cao, ch\u1eb3ng h\u1ea1n nh\u01b0 B\u1ea3o m\u1eadt l\u1edbp v\u1eadn chuy\u1ec3n (TLS) cho SIP, s\u1ebd t\u0103ng c\u01b0\u1eddng t\u00ednh to\u00e0n v\u1eb9n v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a li\u00ean l\u1ea1c.<\/p>\n<\/li>\n

        3. \n

          \u00c1p d\u1ee5ng IPv6<\/strong>: Khi IPv6 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n, c\u00e1c m\u00e1y ch\u1ee7 proxy SIP ph\u1ea3i th\u00edch \u1ee9ng \u0111\u1ec3 x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng IPv6 v\u00e0 \u0111\u1ea3m b\u1ea3o li\u00ean l\u1ea1c li\u1ec1n m\u1ea1ch gi\u1eefa m\u1ea1ng IPv4 v\u00e0 IPv6.<\/p>\n<\/li>\n<\/ol>\n

          C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi proxy SIP<\/h2>\n

          N\u00f3i chung, m\u00e1y ch\u1ee7 proxy c\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi proxy SIP theo nh\u1eefng c\u00e1ch sau:<\/p>\n

            \n
          1. \n

            Proxy ng\u01b0\u1ee3c<\/strong>: Proxy ng\u01b0\u1ee3c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u00e1y ch\u1ee7 proxy SIP kh\u1ecfi ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi internet, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 ph\u00e2n ph\u1ed1i t\u1ea3i.<\/p>\n<\/li>\n

          2. \n

            Proxy b\u1ed9 nh\u1edb \u0111\u1ec7m<\/strong>: B\u1eb1ng c\u00e1ch tri\u1ec3n khai proxy b\u1ed9 nh\u1edb \u0111\u1ec7m, c\u00e1c t\u00e0i nguy\u00ean SIP \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef c\u1ee5c b\u1ed9, gi\u1ea3m t\u1ea3i cho c\u00e1c m\u00e1y ch\u1ee7 SIP ph\u1ee5 tr\u1ee3 v\u00e0 c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i.<\/p>\n<\/li>\n

          3. \n

            Proxy minh b\u1ea1ch<\/strong>: Proxy trong su\u1ed1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi m\u00e1y ch\u1ee7 proxy SIP \u0111\u1ec3 h\u1ed7 tr\u1ee3 qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng v\u00e0 l\u1ecdc n\u1ed9i dung.<\/p>\n<\/li>\n<\/ol>\n

            Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

            \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 proxy SIP, SIP v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng li\u00ean quan, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y c\u00e1c li\u00ean k\u1ebft n\u00e0y h\u1eefu \u00edch:<\/p>\n

              \n
            1. RFC 3261: SIP: Giao th\u1ee9c kh\u1edfi t\u1ea1o phi\u00ean<\/a><\/li>\n
            2. Trang ch\u1ee7 WebRTC<\/a><\/li>\n
            3. Nh\u00f3m l\u00e0m vi\u1ec7c IETF SIP<\/a><\/li>\n
            4. OpenSIPS - M\u00e1y ch\u1ee7 proxy SIP m\u00e3 ngu\u1ed3n m\u1edf<\/a><\/li>\n<\/ol>\n

              T\u00f3m l\u1ea1i, proxy SIP l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n trong th\u1ebf gi\u1edbi m\u1ea1ng truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i. Kh\u1ea3 n\u0103ng x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c tin nh\u1eafn b\u00e1o hi\u1ec7u SIP v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho c\u00e1c phi\u00ean \u0111a ph\u01b0\u01a1ng ti\u1ec7n li\u1ec1n m\u1ea1ch \u0111\u00e3 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong \u0111i\u1ec7n tho\u1ea1i VoIP, truy\u1ec1n th\u00f4ng h\u1ee3p nh\u1ea5t v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng WebRTC. Khi c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, proxy SIP d\u1ef1 ki\u1ebfn s\u1ebd th\u00edch \u1ee9ng v\u00e0 ph\u00e1t tri\u1ec3n m\u1ea1nh, h\u1ed7 tr\u1ee3 nh\u1eefng \u0111\u1ed5i m\u1edbi v\u00e0 ti\u1ebfn b\u1ed9 trong t\u01b0\u01a1ng lai v\u1ec1 truy\u1ec1n th\u00f4ng \u0111a ph\u01b0\u01a1ng ti\u1ec7n th\u1eddi gian th\u1ef1c.<\/p>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479016","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about SIP Proxy: Enabling Seamless Communication for Modern Networks<\/mark>","faq_items":[{"question":"What is SIP proxy, and what does it do?","answer":"

              SIP proxy, also known as a SIP server or SIP registrar, is a vital component of modern communication networks. It operates at the application layer and handles the signaling and routing of SIP messages between users or devices. Its main functions include user location, call routing, protocol translation, and security. In essence, SIP proxy facilitates seamless communication for voice calls, video conferencing, and instant messaging.<\/p>"},{"question":"What is the history behind SIP proxy?","answer":"

              The roots of SIP proxy can be traced back to the early 1990s when the need for a standardized protocol for multimedia sessions emerged with the rise of Voice over IP (VoIP) technology. In 1996, SIP was introduced as a signaling protocol, making session initiation simpler and more versatile. SIP proxy's role in handling SIP messages further enhanced the efficiency and reliability of communication.<\/p>"},{"question":"How does SIP proxy work internally?","answer":"

              The internal structure of SIP proxy involves several key components. These include SIP User Agents (UAs), SIP Proxy Server, Registrar Server, Redirect Server, and Back-to-Back User Agent (B2BUA). SIP UAs represent the clients or endpoints, while the proxy server processes and forwards SIP requests. The registrar server manages user location, and the redirect server informs about the recipient's current location. The B2BUA acts as an intermediary, controlling communication between two SIP endpoints.<\/p>"},{"question":"What are the key features of SIP proxy?","answer":"

              SIP proxy offers essential features that make communication more efficient and secure. These features include call routing, network topology hiding, load balancing, protocol interoperability, and security measures such as authentication and encryption.<\/p>"},{"question":"Are there different types of SIP proxies?","answer":"

              Yes, SIP proxies can be classified into different types based on their functionalities and deployment. The types include stateless proxy, stateful proxy, application proxy, open proxy, and trusted proxy. Each type serves specific purposes and comes with unique characteristics.<\/p>"},{"question":"How is SIP proxy used in real-world scenarios?","answer":"

              SIP proxy finds applications in various scenarios, such as VoIP telephony, unified communications, and WebRTC services. It enables seamless integration of communication services, smooth session setup, and effective call routing.<\/p>"},{"question":"What are some common challenges related to SIP proxy use, and how can they be solved?","answer":"

              Scaling and redundancy, firewall and NAT traversal, and security issues are common challenges in SIP proxy deployment. Solutions involve load balancing, server clustering, using STUN and TURN servers for NAT traversal, and implementing advanced security protocols like TLS.<\/p>"},{"question":"How does SIP proxy compare with other similar terms in communication networks?","answer":"

              SIP proxy, SIP registrar, SIP B2BUA, and SIP proxy server are related terms in the context of SIP-based communication networks. Each term serves specific roles, such as handling signaling, user registration, and call manipulation.<\/p>"},{"question":"What does the future hold for SIP proxy and related technologies?","answer":"

              The future of SIP proxy is promising, with developments in SIP over WebSockets, enhanced security protocols, and IPv6 adoption. These advancements will further improve the efficiency and reliability of real-time multimedia communication.<\/p>"},{"question":"How are proxy servers associated with SIP proxy?","answer":"

              Proxy servers can be used in conjunction with SIP proxy to enhance functionality. For instance, a reverse proxy protects SIP proxy servers from direct exposure to the internet, while a caching proxy improves response times by storing frequently accessed resources locally.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479016\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}