{"id":476245,"date":"2023-08-09T07:26:52","date_gmt":"2023-08-09T07:26:52","guid":{"rendered":""},"modified":"2023-09-05T11:12:18","modified_gmt":"2023-09-05T11:12:18","slug":"class-e-ip-address","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/class-e-ip-address\/","title":{"rendered":"\u0110\u1ecba ch\u1ec9 IP l\u1edbp E"},"content":{"rendered":"<p>\u0110\u1ecba ch\u1ec9 IP l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a k\u1ebft n\u1ed1i internet, cho ph\u00e9p d\u1eef li\u1ec7u truy\u1ec1n qua c\u00e1c m\u1ea1ng r\u1ed9ng l\u1edbn t\u1ea1o n\u00ean internet to\u00e0n c\u1ea7u. \u0110\u1ecba ch\u1ec9 IP l\u1edbp E l\u00e0 m\u1ed9t l\u1edbp duy nh\u1ea5t, ban \u0111\u1ea7u \u0111\u01b0\u1ee3c d\u00e0nh ri\u00eang \u0111\u1ec3 s\u1eed d\u1ee5ng ho\u1eb7c th\u1eed nghi\u1ec7m trong t\u01b0\u01a1ng lai v\u00e0 bao g\u1ed3m m\u1ed9t ph\u1ea1m vi kh\u00f4ng th\u01b0\u1eddng g\u1eb7p trong lu\u1ed3ng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp Internet th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c c\u1ee7a \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i E<\/h2>\n<p>\u0110\u1ecba ch\u1ec9 IP lo\u1ea1i E \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a Giao th\u1ee9c Internet ban \u0111\u1ea7u (IPv4), \u0111\u01b0\u1ee3c L\u1ef1c l\u01b0\u1ee3ng \u0111\u1eb7c nhi\u1ec7m k\u1ef9 thu\u1eadt Internet (IETF) ch\u1ec9 \u0111\u1ecbnh l\u1ea7n \u0111\u1ea7u ti\u00ean v\u00e0o th\u00e1ng 9 n\u0103m 1981 trong RFC 791. N\u0103m l\u1edbp (A \u0111\u1ebfn E) c\u1ee7a \u0111\u1ecba ch\u1ec9 IPv4 l\u00e0 \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t d\u1ef1a tr\u00ean c\u00e1c bit d\u1eabn \u0111\u1ea7u c\u1ee7a ch\u00fang v\u00e0 c\u00e1c k\u00fd hi\u1ec7u nh\u1eb1m m\u1ee5c \u0111\u00edch ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch v\u00e0 quy m\u00f4 m\u1ea1ng kh\u00e1c nhau.<\/p>\n<p>L\u1edbp E, t\u1eeb 240.0.0.0 \u0111\u1ebfn 255.255.255.254, ban \u0111\u1ea7u \u0111\u01b0\u1ee3c d\u00e0nh \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai, v\u1edbi k\u1ef3 v\u1ecdng r\u1eb1ng Internet \u0111ang ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1nh \u0111\u1ecba ch\u1ec9 m\u1edbi. C\u00e1c bit b\u1eadc cao c\u1ee7a \u0111\u1ecba ch\u1ec9 IP L\u1edbp E lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 1111, m\u1ed9t t\u00ednh n\u0103ng \u0111\u1ed9c \u0111\u00e1o trong ph\u1ea1m vi.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i E<\/h2>\n<p>Ban \u0111\u1ea7u, L\u1edbp E \u0111\u01b0\u1ee3c cho l\u00e0 d\u00e0nh ri\u00eang cho m\u1ee5c \u0111\u00edch th\u1eed nghi\u1ec7m v\u00e0 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai khi Internet m\u1edf r\u1ed9ng. Tuy nhi\u00ean, b\u1ea5t ch\u1ea5p s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng internet, kh\u1ed1i \u0111\u1ecba ch\u1ec9 n\u00e0y ph\u1ea7n l\u1edbn v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean internet c\u00f4ng c\u1ed9ng. Theo h\u01b0\u1edbng d\u1eabn m\u1edbi nh\u1ea5t c\u1ee7a IETF trong RFC 1112, kh\u1ed1i n\u00e0y v\u1eabn \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh l\u00e0 \u201cd\u00e0nh ri\u00eang cho c\u00e1c ch\u1ebf \u0111\u1ed9 \u0111\u00e1nh \u0111\u1ecba ch\u1ec9 trong t\u01b0\u01a1ng lai\u201d.<\/p>\n<p>L\u1edbp E bao g\u1ed3m kho\u1ea3ng 268 tri\u1ec7u \u0111\u1ecba ch\u1ec9, nh\u01b0ng h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ec1u \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 t\u1eeb ch\u1ed1i ch\u00fang khi ch\u00fang n\u1eb1m ngo\u00e0i ph\u1ea1m vi L\u1edbp A, B ho\u1eb7c C th\u00f4ng th\u01b0\u1eddng. Ph\u1ea1m vi n\u00e0y c\u0169ng bao g\u1ed3m \u0111\u1ecba ch\u1ec9 qu\u1ea3ng b\u00e1 (255.255.255.255), \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0111\u1ecba ch\u1ec9 IP l\u1edbp E<\/h2>\n<p>\u0110\u1ecba ch\u1ec9 IP l\u1edbp E, gi\u1ed1ng nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ecba ch\u1ec9 IPv4, \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb 32 bit \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch th\u00e0nh b\u1ed1n octet. M\u1ed7i octet c\u00f3 th\u1ec3 n\u1eb1m trong kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 255 theo k\u00fd hi\u1ec7u th\u1eadp ph\u00e2n ho\u1eb7c 00000000 \u0111\u1ebfn 11111111 theo k\u00fd hi\u1ec7u nh\u1ecb ph\u00e2n. B\u1ed1n bit \u0111\u1ea7u ti\u00ean trong L\u1edbp E lu\u00f4n l\u00e0 1111, \u0111\u1ec3 l\u1ea1i 28 bit cho \u0111\u1ecba ch\u1ec9 c\u1ee5 th\u1ec3.<\/p>\n<p>C\u1ea5u tr\u00fac c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 nh\u01b0 sau:<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>Sao ch\u00e9p m\u00e3<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs\" data-no-translation=\"\">1111xxxx | xxxxxxxx | xxxxxxxx | xxxxxxxx\n<\/code><\/div><\/div><\/pre>\n<p>M\u1eb7c d\u00f9 c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ed9c \u0111\u00e1o v\u00e0 m\u1ee5c \u0111\u00edch \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, c\u00e1c \u0111\u1ecba ch\u1ec9 IP Lo\u1ea1i E ph\u1ea7n l\u1edbn kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi ph\u1ea7n m\u1ec1m v\u00e0 ph\u1ea7n c\u1ee9ng m\u1ea1ng hi\u1ec7n c\u00f3 v\u00ec nhi\u1ec1u h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 b\u1ecf qua ho\u1eb7c t\u1eeb ch\u1ed1i ch\u00fang.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i E<\/h2>\n<p>T\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0111\u1ecba ch\u1ec9 IP Lo\u1ea1i E l\u00e0 m\u1ee5c \u0111\u00edch \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u0111\u1ec3 s\u1eed d\u1ee5ng ho\u1eb7c th\u1eed nghi\u1ec7m trong t\u01b0\u01a1ng lai, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean duy nh\u1ea5t trong h\u1ec7 th\u1ed1ng IPv4. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 d\u1eabn \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 b\u00ed \u1ea9n v\u00e0 t\u00f2 m\u00f2 xung quanh l\u1edbp n\u00e0y, th\u1ec9nh tho\u1ea3ng c\u00f3 nh\u1eefng l\u1eddi k\u00eau g\u1ecdi t\u1eeb c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng \u0111\u1ec3 m\u1edf ra ph\u1ea1m vi L\u1edbp E cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng chung do \u0111\u1ecba ch\u1ec9 IPv4 \u0111\u00e3 c\u1ea1n ki\u1ec7t.<\/p>\n<p>Tuy nhi\u00ean, th\u00e1ch th\u1ee9c ch\u00ednh v\u1eabn l\u00e0 s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 n\u00e0y v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n c\u00f3 v\u00e0 n\u1ed7 l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 n\u00e2ng c\u1ea5p ho\u1eb7c s\u1eeda \u0111\u1ed5i ph\u1ea7n m\u1ec1m v\u00e0 ph\u1ea7n c\u1ee9ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng l\u01b0u l\u01b0\u1ee3ng Lo\u1ea1i E.<\/p>\n<h2>C\u00e1c lo\u1ea1i \u0111\u1ecba ch\u1ec9 IP l\u1edbp E<\/h2>\n<p>Ch\u1ec9 c\u00f3 m\u1ed9t lo\u1ea1i \u0111\u1ecba ch\u1ec9 IP L\u1edbp E, c\u00f3 c\u1ea5u tr\u00fac 32 bit gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u1ecba ch\u1ec9 IPv4 kh\u00e1c. Bi\u1ebfn th\u1ec3 duy nh\u1ea5t l\u00e0 c\u00e1c bit d\u1eabn \u0111\u1ea7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 1111.<\/p>\n<h2>Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i E: Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>V\u1edbi tr\u1ea1ng th\u00e1i d\u00e0nh ri\u00eang, \u0111\u1ecba ch\u1ec9 IP L\u1edbp E kh\u00f4ng d\u00e0nh cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i ho\u1eb7c tri\u1ec3n khai trong m\u1ea1ng c\u00f4ng c\u1ed9ng. M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i ho\u00e0n to\u00e0n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb c\u00e1c \u0111\u1ecba ch\u1ec9 Lo\u1ea1i E, trong khi nh\u1eefng nh\u00e0 cung c\u1ea5p kh\u00e1c c\u00f3 th\u1ec3 coi \u0111\u00f3 l\u00e0 m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean th\u1ea5p h\u01a1n.<\/p>\n<p>Tuy nhi\u00ean, \u0111\u1ecba ch\u1ec9 IP L\u1edbp E c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng th\u1eed nghi\u1ec7m, c\u01a1 s\u1edf nghi\u00ean c\u1ee9u ho\u1eb7c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec3 ki\u1ec3m tra c\u00e1c c\u00f4ng ngh\u1ec7 ho\u1eb7c kh\u00e1i ni\u1ec7m m\u1ea1ng m\u1edbi m\u00e0 kh\u00f4ng xung \u0111\u1ed9t v\u1edbi c\u00e1c d\u1ea3i IP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f4ng khai. Th\u00e1ch th\u1ee9c l\u1edbn nh\u1ea5t khi s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP L\u1edbp E l\u00e0 t\u00ednh kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u1ee7a ch\u00fang v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb v\u00e0 ph\u1ea7n m\u1ec1m m\u1ea1ng.<\/p>\n<p>Trong khi m\u1ed9t s\u1ed1 ng\u01b0\u1eddi \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t c\u1eadp nh\u1eadt c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n c\u00f3 \u0111\u1ec3 h\u1ed7 tr\u1ee3 L\u1edbp E, n\u1ed7 l\u1ef1c v\u00e0 chi ph\u00ed li\u00ean quan cho \u0111\u1ebfn nay v\u1eabn v\u01b0\u1ee3t xa l\u1ee3i \u00edch nh\u1eadn \u0111\u01b0\u1ee3c, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a IPv6.<\/p>\n<h2>So s\u00e1nh v\u1edbi c\u00e1c lo\u1ea1i \u0111\u1ecba ch\u1ec9 IP kh\u00e1c<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa L\u1edbp E v\u00e0 c\u00e1c l\u1edbp \u0111\u1ecba ch\u1ec9 IP kh\u00e1c n\u1eb1m \u1edf c\u00e1ch s\u1eed d\u1ee5ng v\u00e0 ch\u1ea5p nh\u1eadn c\u1ee7a ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m m\u1ea1ng.<\/p>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t so s\u00e1nh nhanh:<\/p>\n<table>\n<thead>\n<tr>\n<th>L\u1edbp h\u1ecdc<\/th>\n<th>Bit d\u1eabn \u0111\u1ea7u<\/th>\n<th>Ph\u1ea1m vi \u0111\u1ecba ch\u1ec9<\/th>\n<th>C\u00e1ch s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ed8T<\/td>\n<td>0xxxxxxx<\/td>\n<td>1.0.0.0 \u0111\u1ebfn 126.0.0.0<\/td>\n<td>Internet c\u00f4ng c\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>10xxxxxx<\/td>\n<td>128.0.0.0 \u0111\u1ebfn 191.255.0.0<\/td>\n<td>Internet c\u00f4ng c\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>110xxxxx<\/td>\n<td>192.0.0.0 \u0111\u1ebfn 223.255.255.0<\/td>\n<td>Internet c\u00f4ng c\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>1110xxxx<\/td>\n<td>224.0.0.0 \u0111\u1ebfn 239.255.255.255<\/td>\n<td>\u0110a ph\u01b0\u01a1ng ti\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>E<\/td>\n<td>1111xxxx<\/td>\n<td>240.0.0.0 \u0111\u1ebfn 255.255.255.254<\/td>\n<td>Th\u1ef1c nghi\u1ec7m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Vi\u1ec5n c\u1ea3nh t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP lo\u1ea1i E<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a l\u1edbp E v\u1eabn ch\u01b0a ch\u1eafc ch\u1eafn. Th\u1ec9nh tho\u1ea3ng c\u00f3 nh\u1eefng y\u00eau c\u1ea7u s\u1eed d\u1ee5ng nh\u1eefng \u0111\u1ecba ch\u1ec9 n\u00e0y do IPv4 \u0111\u00e3 c\u1ea1n ki\u1ec7t. Tuy nhi\u00ean, v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u1ec1 t\u00ednh kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3 v\u00e0 vi\u1ec7c \u00e1p d\u1ee5ng IPv6 ng\u00e0y c\u00e0ng t\u0103ng nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p l\u00e2u d\u00e0i \u0111\u1ec3 gi\u1ea3i quy\u1ebft t\u00ecnh tr\u1ea1ng c\u1ea1n ki\u1ec7t khi\u1ebfn \u0111i\u1ec1u n\u00e0y kh\u00f3 x\u1ea3y ra.<\/p>\n<p>D\u00f9 v\u1eady, L\u1edbp E v\u1eabn l\u00e0 ch\u1ee7 \u0111\u1ec1 thu h\u00fat s\u1ef1 t\u00f2 m\u00f2 c\u1ee7a c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u m\u1ea1ng v\u00e0 ti\u1ebfp t\u1ee5c c\u00f3 ti\u1ec1m n\u0103ng s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng th\u1eed nghi\u1ec7m.<\/p>\n<h2>Hi\u1ec7p h\u1ed9i c\u00e1c m\u00e1y ch\u1ee7 proxy c\u00f3 \u0111\u1ecba ch\u1ec9 IP l\u1edbp E<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy th\u01b0\u1eddng kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP Lo\u1ea1i E v\u00ec ch\u00fang ho\u1ea1t \u0111\u1ed9ng trong gi\u1edbi h\u1ea1n c\u1ee7a Internet c\u00f4ng c\u1ed9ng, ph\u1ea7n l\u1edbn t\u1eeb ch\u1ed1i ho\u1eb7c b\u1ecf qua l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp Lo\u1ea1i E. Tuy nhi\u00ean, n\u1ebfu c\u00e1c h\u1ea1n ch\u1ebf \u0111\u1ed1i v\u1edbi Lo\u1ea1i E \u0111\u01b0\u1ee3c d\u1ee1 b\u1ecf, v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, c\u00e1c m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u1ea1m vi n\u00e0y cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang.<\/p>\n<p>V\u1edbi nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ed9c \u0111\u00e1o c\u1ee7a L\u1edbp E, c\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy c\u00f3 th\u1ec3 quan t\u00e2m \u0111\u1ebfn vi\u1ec7c gi\u00e1m s\u00e1t m\u1ecdi thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecba ch\u1ec9 IP n\u00e0y. Tuy nhi\u00ean, t\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP L\u1edbp E trong b\u1ed1i c\u1ea3nh m\u00e1y ch\u1ee7 proxy t\u1ed1t nh\u1ea5t ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ol>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc791\" target=\"_new\" rel=\"noopener nofollow\">Giao th\u1ee9c Internet - \u0110\u1eb7c t\u1ea3 giao th\u1ee9c ch\u01b0\u01a1ng tr\u00ecnh Internet DARPA (RFC 791)<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1112\" target=\"_new\" rel=\"noopener nofollow\">Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng m\u00e1y ch\u1ee7 cho \u0111a tuy\u1ebfn IP (RFC 1112)<\/a><\/li>\n<li><a href=\"https:\/\/www.ietf.org\/\" target=\"_new\" rel=\"noopener nofollow\">L\u1ef1c l\u01b0\u1ee3ng \u0111\u1eb7c nhi\u1ec7m k\u1ef9 thu\u1eadt Internet (IETF)<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">OneProxy \u2013 Trang ch\u1ee7<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476246,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476245","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Class E IP Addresses: An In-depth Examination<\/mark>","faq_items":[{"question":"What is a Class E IP Address?","answer":"<p>A Class E IP Address is a type of Internet Protocol Version 4 (IPv4) address that was originally reserved for future use or experimentation. It covers the range from 240.0.0.0 to 255.255.255.254.<\/p>"},{"question":"When were Class E IP Addresses first introduced?","answer":"<p>Class E IP Addresses were established as part of the original Internet Protocol (IPv4), first specified in September 1981 by the Internet Engineering Task Force (IETF) in RFC 791.<\/p>"},{"question":"Why are Class E IP Addresses not commonly used?","answer":"<p>Class E IP addresses are not commonly used because they are typically incompatible with existing network software and hardware, which are often programmed to ignore or reject them. They were originally reserved for future use or experimental purposes and have largely remained unused.<\/p>"},{"question":"What is the structure of a Class E IP Address?","answer":"<p>A Class E IP Address, like all IPv4 addresses, is made up of 32 bits separated into four octets. Each octet ranges from 0 to 255 in decimal notation, or 00000000 to 11111111 in binary. The leading four bits in Class E are always 1111, leaving 28 bits for specific addressing.<\/p>"},{"question":"How does a Class E IP Address compare to other IP Address Classes?","answer":"<p>The main difference between Class E and other IP Address Classes lies in their usage and acceptance by network hardware and software. While Classes A to C are commonly used in the public internet and Class D for multicast, Class E is reserved for experimental purposes.<\/p>"},{"question":"Can Class E IP Addresses be used with Proxy Servers?","answer":"<p>Proxy servers generally do not use Class E IP addresses as they are intended to operate within the public internet, which largely rejects or ignores Class E traffic. However, if the restrictions on Class E were to be lifted, proxy servers could theoretically use this range for their operations.<\/p>"},{"question":"What are the future perspectives related to Class E IP Addresses?","answer":"<p>The future of Class E remains uncertain. While there are occasional calls to utilize these addresses given the IPv4 exhaustion, the pervasive issue of incompatibility with existing infrastructure and the rising adoption of IPv6 as a long-term solution to address exhaustion makes this unlikely.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476245","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\/476245\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476246"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}