{"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\/fr\/wiki\/ipv4\/","title":{"rendered":"IPv4"},"content":{"rendered":"<p>IPv4 est la quatri\u00e8me version du protocole Internet (IP), qui est le principal protocole de communication de la suite de protocoles Internet. Il sert de syst\u00e8me d\u2019identification des appareils sur un r\u00e9seau et achemine la majeure partie du trafic sur Internet.<\/p>\n<h2>L&#039;histoire de l&#039;origine d&#039;IPv4 et sa premi\u00e8re mention<\/h2>\n<p>IPv4 a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour remplacer son pr\u00e9d\u00e9cesseur, IPv3. La premi\u00e8re sp\u00e9cification d&#039;IPv4 a \u00e9t\u00e9 publi\u00e9e par la Defense Advanced Research Projects Agency (DARPA) en septembre 1981 sous le nom de RFC 791. Cela faisait partie de la transition du programme exp\u00e9rimental de contr\u00f4le de r\u00e9seau \u00e0 l&#039;architecture moderne TCP\/IP, jetant les bases du Internet tel que nous le connaissons aujourd&#039;hui.<\/p>\n<h2>Informations d\u00e9taill\u00e9es sur IPv4\u00a0: \u00e9largir le sujet<\/h2>\n<p>IPv4 fonctionne sur un sch\u00e9ma d&#039;adresses de 32 bits, permettant environ 4,3 milliards d&#039;adresses uniques. Ces adresses sont divis\u00e9es en cinq classes (A, B, C, D et E) \u00e0 des fins diverses.<\/p>\n<h3>Classes d&#039;adresses IPv4\u00a0:<\/h3>\n<ul>\n<li>Classe A : Utilis\u00e9 pour les grands r\u00e9seaux.<\/li>\n<li>Classe B\u00a0: utilis\u00e9e pour les r\u00e9seaux de taille moyenne.<\/li>\n<li>Classe C\u00a0: utilis\u00e9e pour les petits r\u00e9seaux.<\/li>\n<li>Classe D\u00a0:\u00a0r\u00e9serv\u00e9e \u00e0 l&#039;adressage multicast.<\/li>\n<li>Classe E : R\u00e9serv\u00e9 \u00e0 des fins exp\u00e9rimentales.<\/li>\n<\/ul>\n<h2>La structure interne d&#039;IPv4\u00a0: comment fonctionne IPv4<\/h2>\n<p>Une adresse IPv4 se compose de quatre octets s\u00e9par\u00e9s par des points. Voici la structure :<\/p>\n<ol>\n<li><strong>Partie r\u00e9seau\u00a0:<\/strong> Ceci identifie le r\u00e9seau sp\u00e9cifique.<\/li>\n<li><strong>Partie h\u00f4te\u00a0:<\/strong> Ceci identifie le p\u00e9riph\u00e9rique sp\u00e9cifique au sein du r\u00e9seau.<\/li>\n<\/ol>\n<h3>Exemple:<\/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> est la partie r\u00e9seau.<\/li>\n<li><code data-no-translation=\"\">1<\/code> est la partie h\u00f4te.<\/li>\n<\/ul>\n<p>Les adresses doivent \u00eatre uniques au sein d&#039;un r\u00e9seau et les routeurs les utilisent pour transf\u00e9rer les donn\u00e9es vers le bon emplacement.<\/p>\n<h2>Analyse des principales fonctionnalit\u00e9s d&#039;IPv4<\/h2>\n<ul>\n<li><strong>Sch\u00e9ma d&#039;adressage\u00a0:<\/strong> 32 bits, autorisant plus de 4 milliards d&#039;adresses uniques.<\/li>\n<li><strong>Fragmentation:<\/strong> Les paquets de donn\u00e9es peuvent \u00eatre fragment\u00e9s et r\u00e9assembl\u00e9s.<\/li>\n<li><strong>Somme de contr\u00f4le\u00a0:<\/strong> Garantit l\u2019int\u00e9grit\u00e9 des donn\u00e9es.<\/li>\n<li><strong>Dur\u00e9e de vie (TTL)\u00a0:<\/strong> Emp\u00eache les paquets de donn\u00e9es de boucler ind\u00e9finiment.<\/li>\n<\/ul>\n<h2>Types d&#039;IPv4\u00a0: utilisez des tableaux et des listes pour \u00e9crire<\/h2>\n<table>\n<thead>\n<tr>\n<th>Taper<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Monodiffusion<\/td>\n<td>Adresse pour un seul appareil<\/td>\n<\/tr>\n<tr>\n<td>Diffuser<\/td>\n<td>Adresse de tous les appareils d&#039;un r\u00e9seau<\/td>\n<\/tr>\n<tr>\n<td>Multidiffusion<\/td>\n<td>Adresse pour un groupe sp\u00e9cifique d&#039;appareils<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Fa\u00e7ons d&#039;utiliser IPv4, probl\u00e8mes et leurs solutions li\u00e9es \u00e0 l&#039;utilisation<\/h2>\n<p>IPv4 est largement utilis\u00e9 pour les r\u00e9seaux, mais il est confront\u00e9 \u00e0 des probl\u00e8mes tels que l&#039;\u00e9puisement des adresses. Des solutions telles que la traduction d&#039;adresses r\u00e9seau (NAT) et la transition vers IPv6 ont \u00e9t\u00e9 mises en \u0153uvre pour att\u00e9nuer ces probl\u00e8mes.<\/p>\n<h2>Principales caract\u00e9ristiques et autres comparaisons avec des termes similaires<\/h2>\n<h3>Comparaison avec IPv6\u00a0:<\/h3>\n<table>\n<thead>\n<tr>\n<th>Fonctionnalit\u00e9<\/th>\n<th>IPv4<\/th>\n<th>IPv6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Taille de l&#039;adresse<\/td>\n<td>32 bits<\/td>\n<td>128 bits<\/td>\n<\/tr>\n<tr>\n<td>Format d&#039;adresse<\/td>\n<td>D\u00e9cimal en pointill\u00e9s<\/td>\n<td>Hexad\u00e9cimal<\/td>\n<\/tr>\n<tr>\n<td>S\u00e9curit\u00e9<\/td>\n<td>Facultatif<\/td>\n<td>Int\u00e9gr\u00e9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Perspectives et technologies du futur li\u00e9es \u00e0 IPv4<\/h2>\n<p>IPv4 continuera d&#039;\u00eatre pertinent en raison des syst\u00e8mes existants, mais l&#039;avenir penche vers IPv6. Les technologies de transition telles que la double pile permettent d&#039;utiliser simultan\u00e9ment IPv4 et IPv6.<\/p>\n<h2>Comment les serveurs proxy peuvent \u00eatre utilis\u00e9s ou associ\u00e9s \u00e0 IPv4<\/h2>\n<p>Les serveurs proxy comme OneProxy agissent comme interm\u00e9diaires, transmettant les demandes et les r\u00e9ponses entre les appareils clients et les serveurs cibles. Avec IPv4, les serveurs proxy peuvent am\u00e9liorer la confidentialit\u00e9, filtrer le contenu ou contourner les restrictions g\u00e9ographiques.<\/p>\n<h2>Liens connexes<\/h2>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Internet_Protocol\" target=\"_new\" rel=\"noopener nofollow\">Protocole Internet \u2013 Wikip\u00e9dia<\/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\/fr\/\" target=\"_new\" rel=\"noopener\">OneProxy \u2013 Site officiel<\/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\/fr\/wp-json\/wp\/v2\/wiki\/477721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/fr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/fr\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/fr\/wp-json\/wp\/v2\/wiki\/477721\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/fr\/wp-json\/wp\/v2\/media?parent=477721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}