{"id":53,"date":"2026-06-05T21:59:41","date_gmt":"2026-06-05T18:59:41","guid":{"rendered":"https:\/\/secradar.net\/blog\/ipv4-ipv6-nedir-farklari\/"},"modified":"2026-06-05T21:59:41","modified_gmt":"2026-06-05T18:59:41","slug":"ipv4-ipv6-nedir-farklari","status":"publish","type":"post","link":"https:\/\/secradar.net\/blog\/ipv4-ipv6-nedir-farklari\/","title":{"rendered":"IPv4 ve IPv6 Nedir? Farklar\u0131, Adres T\u00fckenmesi ve Ge\u00e7i\u015f"},"content":{"rendered":"

\u0130nternete ba\u011fl\u0131 her cihaz\u0131n bir kimli\u011fi vard\u0131r: IP adresi. Bug\u00fcn iki s\u00fcr\u00fcm bir arada kullan\u0131l\u0131yor \u2014 eski ama h\u00e2l\u00e2 bask\u0131n IPv4<\/strong> ve onun halefi IPv6<\/strong>. Peki aralar\u0131ndaki fark ne, neden IPv6’ya ge\u00e7iliyor ve bu sizi nas\u0131l etkiler?<\/p>\n

IP Adresi Nedir?<\/h2>\n

IP (Internet Protocol) adresi, bir cihaz\u0131n a\u011f \u00fczerindeki say\u0131sal kimli\u011fidir. T\u0131pk\u0131 bir posta adresi gibi, verinin do\u011fru cihaza ula\u015fmas\u0131n\u0131 sa\u011flar. Web sunucular\u0131, telefonlar, IoT cihazlar\u0131 \u2014 internete \u00e7\u0131kan her \u015feyin en az bir IP adresi olur.<\/p>\n

IPv4 Nedir?<\/h2>\n

IPv4, 1980’lerden beri kullan\u0131lan 32 bitlik adresleme sistemidir. 192.168.1.1<\/code> gibi noktayla ayr\u0131lm\u0131\u015f d\u00f6rt say\u0131dan olu\u015fur. 32 bit, toplam yakla\u015f\u0131k 4,3 milyar<\/strong> benzersiz adres demektir. \u0130nternetin ilk y\u0131llar\u0131nda bu say\u0131 sonsuz gibi g\u00f6r\u00fcn\u00fcyordu; ancak ak\u0131ll\u0131 telefonlar, bulut sunucular\u0131 ve IoT patlamas\u0131yla adresler t\u00fckendi. Bug\u00fcn yeni IPv4 bloklar\u0131 neredeyse kalmad\u0131 ve ikinci el IPv4 adresleri a\u00e7\u0131k art\u0131rmayla sat\u0131l\u0131yor.<\/p>\n

IPv6 Nedir?<\/h2>\n

IPv6, bu t\u00fckenme sorununu \u00e7\u00f6zmek i\u00e7in tasarlanan 128 bitlik sistemdir. 2001:0db8:85a3::8a2e:0370:7334<\/code> gibi iki nokta \u00fcst \u00fcste ile ayr\u0131lm\u0131\u015f onalt\u0131l\u0131k gruplardan olu\u015fur. 128 bit, ak\u0131l almaz b\u00fcy\u00fckl\u00fckte bir adres havuzu sa\u011flar: 340 undesilyon<\/strong> (3,4\u00d710\u00b3\u2078) adres \u2014 d\u00fcnyadaki her kum tanesine bile adres verebilecek kadar.<\/p>\n

IPv4 ve IPv6 Aras\u0131ndaki Temel Farklar<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u00d6zellik<\/th>\nIPv4<\/th>\nIPv6<\/th>\n<\/tr>\n<\/thead>\n
Adres uzunlu\u011fu<\/td>\n32 bit<\/td>\n128 bit<\/td>\n<\/tr>\n
Adres say\u0131s\u0131<\/td>\n~4,3 milyar<\/td>\n~3,4\u00d710\u00b3\u2078<\/td>\n<\/tr>\n
G\u00f6sterim<\/td>\n192.168.1.1 (ondal\u0131k)<\/td>\n2001:db8::1 (onalt\u0131l\u0131k)<\/td>\n<\/tr>\n
Yap\u0131land\u0131rma<\/td>\nGenelde manuel \/ DHCP<\/td>\nOtomatik (SLAAC) destekli<\/td>\n<\/tr>\n
NAT ihtiyac\u0131<\/td>\nAdres k\u0131tl\u0131\u011f\u0131 nedeniyle yayg\u0131n<\/td>\nGerekmez (u\u00e7tan uca adresleme)<\/td>\n<\/tr>\n
DNS kayd\u0131<\/td>\nA kayd\u0131<\/td>\nAAAA kayd\u0131<\/td>\n<\/tr>\n
IPsec<\/td>\nOpsiyonel<\/td>\nTasar\u0131mdan gelen destek<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Adres T\u00fckenmesi ve NAT<\/h2>\n

IPv4 adresleri t\u00fckenince ge\u00e7ici \u00e7\u00f6z\u00fcm olarak NAT (Network Address Translation)<\/strong> yayg\u0131nla\u015ft\u0131: bir ev veya kurum, tek bir public IPv4 adresinin arkas\u0131nda onlarca cihaz\u0131 payla\u015ft\u0131r\u0131r. Bu, adres k\u0131tl\u0131\u011f\u0131n\u0131 ertelese de u\u00e7tan uca ba\u011flant\u0131y\u0131 zorla\u015ft\u0131r\u0131r ve baz\u0131 uygulamalarda (P2P, sunucu bar\u0131nd\u0131rma) sorun \u00e7\u0131kar\u0131r. IPv6, devasa adres havz\u0131yla NAT’\u0131 gereksiz k\u0131lar.<\/p>\n

IPv6’ya Ge\u00e7i\u015f Neden \u00d6nemli?<\/h2>\n

Ge\u00e7i\u015f y\u0131llard\u0131r s\u00fcr\u00fcyor ve genellikle “dual-stack” (IPv4 ve IPv6’n\u0131n bir arada \u00e7al\u0131\u015fmas\u0131) y\u00f6ntemiyle yap\u0131l\u0131yor. Web siteniz i\u00e7in IPv6 deste\u011fi; daha h\u0131zl\u0131 (NAT’s\u0131z) ba\u011flant\u0131, gelece\u011fe haz\u0131r altyap\u0131 ve mobil a\u011flarda daha iyi eri\u015filebilirlik anlam\u0131na gelir. Bir alan ad\u0131n\u0131n IPv6 \u00fczerinden eri\u015filebilir olmas\u0131 i\u00e7in DNS’inde AAAA kayd\u0131<\/strong> tan\u0131ml\u0131 olmal\u0131d\u0131r.<\/p>\n

Kendi IP Adresinizi ve AAAA Kayd\u0131n\u0131z\u0131 Kontrol Edin<\/h2>\n

\u015eu an hangi IP ile (ve IPv4 m\u0131 IPv6 m\u0131) internete \u00e7\u0131kt\u0131\u011f\u0131n\u0131z\u0131 IP Adresim arac\u0131yla<\/a> an\u0131nda g\u00f6rebilirsiniz: konum, ISP\/ASN ve adres s\u00fcr\u00fcm\u00fc dahil. Bir alan ad\u0131n\u0131n IPv6 (AAAA) kayd\u0131 olup olmad\u0131\u011f\u0131n\u0131 ise DNS Sorgulama arac\u0131yla<\/a> kontrol edebilirsiniz.<\/p>\n

Web sitenizi IPv6 destekli, modern bir altyap\u0131da bar\u0131nd\u0131rmak isterseniz \u0130HS Telekom hosting ve sunucu \u00e7\u00f6z\u00fcmlerini<\/a> 7\/24 T\u00fcrk\u00e7e destekle inceleyebilirsiniz.<\/p>\n

S\u00fcrekli izleme ister misiniz?<\/b> SecRadar’a \u00fccretsiz \u00fcye olun<\/a>; alan ad\u0131n\u0131z\u0131n DNS (A\/AAAA) de\u011fi\u015fikliklerinde, SSL ve domain biti\u015finde Telegram veya e-posta ile otomatik uyar\u0131 al\u0131n.<\/div>\n","protected":false},"excerpt":{"rendered":"

\u0130nternete ba\u011fl\u0131 her cihaz\u0131n bir kimli\u011fi vard\u0131r: IP adresi. Bug\u00fcn iki s\u00fcr\u00fcm bir arada kullan\u0131l\u0131yor \u2014 eski ama h\u00e2l\u00e2 bask\u0131n IPv4 ve onun halefi IPv6. Peki aralar\u0131ndaki fark ne, neden IPv6’ya ge\u00e7iliyor ve bu sizi nas\u0131l etkiler? IP Adresi Nedir? IP (Internet Protocol) adresi, bir cihaz\u0131n a\u011f \u00fczerindeki say\u0131sal kimli\u011fidir. T\u0131pk\u0131 bir posta adresi gibi, … Devam\u0131n\u0131 oku<\/a><\/p>\n","protected":false},"author":1,"featured_media":52,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-53","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ag-ip"],"_links":{"self":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts\/53","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/comments?post=53"}],"version-history":[{"count":0,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts\/53\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/media\/52"}],"wp:attachment":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/media?parent=53"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/categories?post=53"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/tags?post=53"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}