{"id":477721,"date":"2023-08-09T09:19:17","date_gmt":"2023-08-09T09:19:17","guid":{"rendered":""},"modified":"2023-09-05T11:15:16","modified_gmt":"2023-09-05T11:15:16","slug":"ipv4","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/ipv4\/","title":{"rendered":"IPv4"},"content":{"rendered":"<p>IPv4 \u662f\u4e92\u8054\u7f51\u534f\u8bae (IP) \u7684\u7b2c\u56db\u4e2a\u7248\u672c\uff0c\u662f\u4e92\u8054\u7f51\u534f\u8bae\u65cf\u4e2d\u7684\u4e3b\u8981\u901a\u4fe1\u534f\u8bae\u3002\u5b83\u5145\u5f53\u7f51\u7edc\u4e0a\u8bbe\u5907\u7684\u8bc6\u522b\u7cfb\u7edf\u5e76\u8def\u7531\u4e92\u8054\u7f51\u4e0a\u7684\u5927\u90e8\u5206\u6d41\u91cf\u3002<\/p>\n<h2>IPv4 \u7684\u8d77\u6e90\u548c\u9996\u6b21\u63d0\u53ca\u7684\u5386\u53f2<\/h2>\n<p>IPv4 \u662f\u4f5c\u4e3a\u5176\u524d\u8eab IPv3 \u7684\u66ff\u4ee3\u54c1\u800c\u5f00\u53d1\u7684\u3002 IPv4 \u7684\u7b2c\u4e00\u4e2a\u89c4\u8303\u7531\u56fd\u9632\u9ad8\u7ea7\u7814\u7a76\u8ba1\u5212\u5c40 (DARPA) \u4e8e 1981 \u5e74 9 \u6708\u53d1\u5e03\uff0c\u7f16\u53f7\u4e3a RFC 791\u3002\u8fd9\u662f\u4ece\u5b9e\u9a8c\u6027\u7f51\u7edc\u63a7\u5236\u8ba1\u5212\u5411\u73b0\u4ee3 TCP\/IP \u67b6\u6784\u8fc7\u6e21\u7684\u4e00\u90e8\u5206\uff0c\u4e3a IPv4 \u7684\u53d1\u5c55\u5960\u5b9a\u4e86\u57fa\u7840\u3002\u6211\u4eec\u4eca\u5929\u6240\u77e5\u9053\u7684\u4e92\u8054\u7f51\u3002<\/p>\n<h2>\u6709\u5173 IPv4 \u7684\u8be6\u7ec6\u4fe1\u606f\uff1a\u6269\u5c55\u4e3b\u9898<\/h2>\n<p>IPv4 \u91c7\u7528 32 \u4f4d\u5730\u5740\u65b9\u6848\u8fd0\u884c\uff0c\u5141\u8bb8\u5927\u7ea6 43 \u4ebf\u4e2a\u552f\u4e00\u5730\u5740\u3002\u8fd9\u4e9b\u5730\u5740\u51fa\u4e8e\u4e0d\u540c\u7684\u76ee\u7684\u5206\u4e3a\u4e94\u7c7b\uff08A\u3001B\u3001C\u3001D \u548c E\uff09\u3002<\/p>\n<h3>IPv4 \u5730\u5740\u7c7b\u522b\uff1a<\/h3>\n<ul>\n<li>A\u7c7b\uff1a\u7528\u4e8e\u5927\u578b\u7f51\u7edc\u3002<\/li>\n<li>B\u7c7b\uff1a\u7528\u4e8e\u4e2d\u578b\u7f51\u7edc\u3002<\/li>\n<li>C \u7c7b\uff1a\u7528\u4e8e\u8f83\u5c0f\u7684\u7f51\u7edc\u3002<\/li>\n<li>D \u7c7b\uff1a\u4fdd\u7559\u7528\u4e8e\u591a\u64ad\u5bfb\u5740\u3002<\/li>\n<li>E \u7c7b\uff1a\u4fdd\u7559\u7528\u4e8e\u5b9e\u9a8c\u76ee\u7684\u3002<\/li>\n<\/ul>\n<h2>IPv4 \u7684\u5185\u90e8\u7ed3\u6784\uff1aIPv4 \u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>IPv4 \u5730\u5740\u7531\u56db\u4e2a\u516b\u4f4d\u4f4d\u7ec4\u7ec4\u6210\uff0c\u7528\u70b9\u5206\u9694\u3002\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li><strong>\u7f51\u7edc\u90e8\u5206\uff1a<\/strong> \u8fd9\u6807\u8bc6\u4e86\u7279\u5b9a\u7684\u7f51\u7edc\u3002<\/li>\n<li><strong>\u4e3b\u6301\u4eba\u90e8\u5206\uff1a<\/strong> \u8fd9\u6807\u8bc6\u4e86\u7f51\u7edc\u5185\u7684\u7279\u5b9a\u8bbe\u5907\u3002<\/li>\n<\/ol>\n<h3>\u4f8b\u5b50\uff1a<\/h3>\n<p><code data-no-translation=\"\">192.168.1.1<\/code><\/p>\n<ul>\n<li><code data-no-translation=\"\">192.168.1<\/code> \u662f\u7f51\u7edc\u90e8\u5206\u3002<\/li>\n<li><code data-no-translation=\"\">1<\/code> \u662f\u4e3b\u673a\u90e8\u5206\u3002<\/li>\n<\/ul>\n<p>\u5730\u5740\u5728\u7f51\u7edc\u4e2d\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u8def\u7531\u5668\u4f7f\u7528\u5b83\u4eec\u5c06\u6570\u636e\u8f6c\u53d1\u5230\u6b63\u786e\u7684\u4f4d\u7f6e\u3002<\/p>\n<h2>IPv4\u5173\u952e\u7279\u6027\u5206\u6790<\/h2>\n<ul>\n<li><strong>\u5bfb\u5740\u65b9\u6848\uff1a<\/strong> 32 \u4f4d\uff0c\u5141\u8bb8\u8d85\u8fc7 40 \u4ebf\u4e2a\u552f\u4e00\u5730\u5740\u3002<\/li>\n<li><strong>\u788e\u7247\u5316\uff1a<\/strong> \u6570\u636e\u5305\u53ef\u4ee5\u88ab\u5206\u6bb5\u548c\u91cd\u7ec4\u3002<\/li>\n<li><strong>\u6821\u9a8c\u548c\uff1a<\/strong> \u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u751f\u5b58\u65f6\u95f4 (TTL)\uff1a<\/strong> \u9632\u6b62\u6570\u636e\u5305\u65e0\u9650\u5faa\u73af\u3002<\/li>\n<\/ul>\n<h2>IPv4\u7684\u7c7b\u578b\uff1a\u4f7f\u7528\u8868\u683c\u548c\u5217\u8868\u6765\u7f16\u5199<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7c7b\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5355\u64ad<\/td>\n<td>\u5355\u4e2a\u8bbe\u5907\u7684\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>\u64ad\u9001<\/td>\n<td>\u7f51\u7edc\u4e2d\u6240\u6709\u8bbe\u5907\u7684\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>\u7ec4\u64ad<\/td>\n<td>\u7279\u5b9a\u8bbe\u5907\u7ec4\u7684\u5730\u5740<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>IPv4\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u4e2d\u51fa\u73b0\u7684\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<p>IPv4 \u5e7f\u6cdb\u7528\u4e8e\u7f51\u7edc\uff0c\u4f46\u9762\u4e34\u5730\u5740\u8017\u5c3d\u7b49\u95ee\u9898\u3002\u7f51\u7edc\u5730\u5740\u8f6c\u6362 (NAT) \u548c\u5411 IPv6 \u8fc7\u6e21\u7b49\u89e3\u51b3\u65b9\u6848\u5df2\u88ab\u5b9e\u65bd\u4ee5\u7f13\u89e3\u8fd9\u4e9b\u95ee\u9898\u3002<\/p>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u5176\u4ed6\u4e0e\u540c\u7c7b\u4ea7\u54c1\u7684\u6bd4\u8f83<\/h2>\n<h3>\u4e0eIPv6\u7684\u6bd4\u8f83\uff1a<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>IPv4<\/th>\n<th>IPv6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5730\u5740\u5927\u5c0f<\/td>\n<td>32\u4f4d<\/td>\n<td>128\u4f4d<\/td>\n<\/tr>\n<tr>\n<td>\u5730\u5740\u683c\u5f0f<\/td>\n<td>\u70b9\u5206\u5341\u8fdb\u5236<\/td>\n<td>\u5341\u516d\u8fdb\u5236<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168<\/td>\n<td>\u9009\u4fee\u7684<\/td>\n<td>\u5185\u7f6e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e IPv4 \u76f8\u5173\u7684\u672a\u6765\u524d\u666f\u548c\u6280\u672f<\/h2>\n<p>\u7531\u4e8e\u9057\u7559\u7cfb\u7edf\u7684\u539f\u56e0\uff0cIPv4 \u5c06\u7ee7\u7eed\u53d1\u6325\u4f5c\u7528\uff0c\u4f46\u672a\u6765\u5c06\u503e\u5411\u4e8e IPv6\u3002\u53cc\u6808\u7b49\u8fc7\u6e21\u6280\u672f\u5141\u8bb8\u540c\u65f6\u4f7f\u7528 IPv4 \u548c IPv6\u3002<\/p>\n<h2>\u5982\u4f55\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6216\u5c06\u5176\u4e0e IPv4 \u5173\u8054<\/h2>\n<p>OneProxy \u7b49\u4ee3\u7406\u670d\u52a1\u5668\u5145\u5f53\u4e2d\u4ecb\uff0c\u5728\u5ba2\u6237\u7aef\u8bbe\u5907\u548c\u76ee\u6807\u670d\u52a1\u5668\u4e4b\u95f4\u8f6c\u53d1\u8bf7\u6c42\u548c\u54cd\u5e94\u3002\u501f\u52a9 IPv4\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u589e\u5f3a\u9690\u79c1\u3001\u8fc7\u6ee4\u5185\u5bb9\u6216\u7ed5\u8fc7\u5730\u7406\u9650\u5236\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Internet_Protocol\" target=\"_new\" rel=\"noopener nofollow\">\u4e92\u8054\u7f51\u534f\u8bae - \u7ef4\u57fa\u767e\u79d1<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc791\" target=\"_new\" rel=\"noopener nofollow\">RFC 791 \u2013 IETF<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/cn\/\" target=\"_new\" rel=\"noopener\">OneProxy \u2013 \u5b98\u65b9\u7f51\u7ad9<\/a><\/li>\n<\/ul>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477721","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Internet Protocol Version 4 (IPv4)<\/mark>","faq_items":[{"question":"What is IPv4 and why is it important?","answer":"<p>IPv4, or Internet Protocol Version 4, is the fourth version of the Internet Protocol, serving as the primary identification and routing system for devices on a network. It's vital for Internet functionality, routing most of the online traffic.<\/p>"},{"question":"When was IPv4 first introduced, and who developed it?","answer":"<p>IPv4 was first introduced in September 1981 by the Defense Advanced Research Projects Agency (DARPA) as RFC 791. It marked a crucial transition in Internet architecture.<\/p>"},{"question":"How is an IPv4 address structured?","answer":"<p>An IPv4 address is structured into two portions: the network portion and the host portion, consisting of four octets separated by dots. For example, in the address <code>192.168.1.1<\/code>, <code>192.168.1<\/code> is the network portion, and <code>1<\/code> is the host portion.<\/p>"},{"question":"What are the key features of IPv4?","answer":"<p>IPv4's key features include a 32-bit addressing scheme, allowing over 4 billion unique addresses, fragmentation of data packets, checksum for data integrity, and Time-to-Live (TTL) to prevent infinite looping of data packets.<\/p>"},{"question":"What types of IPv4 addresses exist?","answer":"<p>There are three main types of IPv4 addresses: Unicast for a single device, Broadcast for all devices in a network, and Multicast for a specific group of devices.<\/p>"},{"question":"What are the main problems with IPv4, and how are they solved?","answer":"<p>The main problem with IPv4 is address exhaustion, due to the limited number of unique addresses. Solutions like Network Address Translation (NAT) and transitioning to IPv6 have been implemented to address this issue.<\/p>"},{"question":"How does IPv4 compare to IPv6?","answer":"<p>IPv4 uses a 32-bit address scheme, whereas IPv6 uses 128-bit. IPv4's security is optional, while IPv6 has built-in security. The address format is dotted decimal for IPv4 and hexadecimal for IPv6.<\/p>"},{"question":"What are the future perspectives related to IPv4?","answer":"<p>Though IPv4 will continue to be relevant in legacy systems, the future is leaning towards IPv6. Transition technologies like dual-stack will enable both IPv4 and IPv6 to be used together.<\/p>"},{"question":"How are proxy servers like OneProxy associated with IPv4?","answer":"<p>Proxy servers like OneProxy work with IPv4 by acting as intermediaries, forwarding requests and responses between client devices and target servers. They can enhance privacy, filter content, or bypass geographical restrictions.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477721\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=477721"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}