{"id":8915,"date":"2016-11-15T09:23:21","date_gmt":"2016-11-15T07:23:21","guid":{"rendered":"https:\/\/ihs.com.tr\/blog\/?p=8915"},"modified":"2017-02-09T14:30:49","modified_gmt":"2017-02-09T12:30:49","slug":"en-populer-mobil-vpn-teknolojileri","status":"publish","type":"post","link":"https:\/\/www.ihs.com.tr\/blog\/en-populer-mobil-vpn-teknolojileri\/","title":{"rendered":"En Pop\u00fcler Mobil VPN Teknolojileri"},"content":{"rendered":"

Hareket halindeki veriyi kriptolamaya y\u00f6nelik, SSL ve IPSec gibi geleneksel yakla\u015f\u0131mlar y\u00fcksek h\u0131zl\u0131 kablolu a\u011flar ve g\u00fcvenilir ba\u011flant\u0131lar i\u00e7in tasarlanm\u0131\u015ft\u0131r. Veri aktar\u0131m\u0131n\u0131n yava\u015f, ba\u011flant\u0131lar\u0131n daha istikrars\u0131z oldu\u011fu mobil kablosuz a\u011f (WAN) ortamlar\u0131nda ise geleneksel VPN performans\u0131 yeterli de\u011fildir ve s\u0131k s\u0131k uygulama hatalar\u0131na, d\u00fc\u015f\u00fck h\u0131za ve veri kayb\u0131na neden olur.<\/span><\/p>\n

\u0130deal bir mobil VPN teknolojisinde hangi \u00f6zellikler olmal\u0131?<\/span><\/strong><\/p>\n

\u0130nternet protokol\u00fcn\u00fcn (TCIP\/IP) en s\u0131k rastlanan zay\u0131fl\u0131klar\u0131ndan biri veri g\u00fcvenli\u011fi ve gizlilik ad\u0131na hi\u00e7bir yerle\u015fik mekanizmas\u0131n\u0131n olmamas\u0131d\u0131r. Dolay\u0131s\u0131yla bu sorunu \u00e7\u00f6zmek amac\u0131yla kimlik do\u011frulama ve internete ba\u011fl\u0131 iki cihaz aras\u0131nda aktar\u0131m halindeki verinin kriptolanmas\u0131 i\u00e7in farkl\u0131 mobil VPN teknolojilerini kullanmak \u00e7ok \u00f6nemli bir hal alm\u0131\u015ft\u0131r.<\/span><\/p>\n

Geleneksel VPN esas\u0131nda veri gizlili\u011fini ve kriptolamay\u0131 sa\u011flamak i\u00e7in a\u011flar veya bilgisayarlar aras\u0131nda olu\u015fturulan bir arac\u0131 veya vekildir. Fakat mobil cihazlar\u0131n say\u0131s\u0131n\u0131n ve i\u015flevlerinin giderek artmas\u0131 ve bununla birlikte gelen g\u00fcvenlik kayg\u0131lar\u0131 y\u00fcz\u00fcnden daha geli\u015fmi\u015f mobil VPN teknolojilerine ihtiya\u00e7 duyulmaya ba\u015flanm\u0131\u015ft\u0131r. Mobil VPN konusunda a\u015fa\u011f\u0131daki hususlar\u0131n g\u00f6z \u00f6n\u00fcnde bulundurulmas\u0131 gerekmektedir:<\/span><\/p>\n

– \u00c7al\u0131\u015fan ki\u015filer genellikle evleri ve i\u015fyerleri aras\u0131nda s\u00fcrekli hareket halindedir ve dolay\u0131s\u0131yla IP adresleri ve a\u011flar\u0131 s\u0131k s\u0131k de\u011fi\u015fir. VPN bu de\u011fi\u015fiklikler esnas\u0131ndaki uyumu kolayla\u015ft\u0131ram\u0131yorsa, kullan\u0131c\u0131lar\u0131n her IP de\u011fi\u015fikli\u011finde VPN ba\u011flant\u0131lar\u0131n\u0131 yenilemeleri gerekir.<\/span><\/p>\n

– Veri al\u0131\u015fveri\u015finin g\u00fcvenilir olmas\u0131 gerekir. Veri al\u0131\u015fveri\u015fini yapan bilgisayarlar veri g\u00f6nderiminin ba\u015far\u0131s\u0131z olmas\u0131 durumunda kullan\u0131c\u0131y\u0131 uyarmal\u0131d\u0131r.<\/span><\/p>\n

– Kullan\u0131c\u0131lar pil t\u00fcketiminden tasarruf etmek i\u00e7in mobil cihazlar\u0131n\u0131 s\u0131k s\u0131k kapat\u0131rlar veya duraklat\u0131rlar. Mobil VPN\u2019in cihazlar\u0131n bu durumlar\u0131n\u0131 alg\u0131lamas\u0131 ve kullan\u0131c\u0131lara varl\u0131\u011f\u0131n\u0131 hissettirmeden otomatik olarak yeniden \u00e7al\u0131\u015fmaya ba\u015flamas\u0131 gerekir. Aksi takdirde VPN ba\u011flant\u0131s\u0131na ba\u011fl\u0131 olan uygulamalar muhtemelen hata verir ve kullan\u0131c\u0131 veri kaybeder.<\/span><\/p>\n

– H\u00fccresel veri a\u011flar\u0131 kablolu a\u011flara k\u0131yasla daha d\u00fc\u015f\u00fck h\u0131zdad\u0131r ve daha fazla veri kayb\u0131na neden olur. Uygulamalar ise kesintisiz ve h\u0131zl\u0131 kablolu a\u011flar i\u00e7in yaz\u0131l\u0131r. Mobil VPN bu uygulamalar\u0131n mobil a\u011flarda da sorunsuz bir \u015fekilde \u00e7al\u0131\u015fmalar\u0131n\u0131 sa\u011flamal\u0131d\u0131r.<\/span><\/p>\n

K\u0131sacas\u0131, Mobil VPN teknolojisi kullan\u0131c\u0131lar\u0131n mobil a\u011flardan beklentileriyle elde ettikleri aras\u0131ndaki a\u00e7\u0131\u011f\u0131 kapatma e\u011filiminde olmal\u0131d\u0131r.<\/span><\/p>\n

\"mobil<\/p>\n

En Pop\u00fcler Mobil VPN Teknolojileri<\/span><\/strong><\/p>\n

Uygulama, Aktar\u0131m, \u0130nternet ve Link Katman\u0131 protokolleri gibi, farkl\u0131 ama\u00e7lar i\u00e7in kullan\u0131lan protokoller aras\u0131nda bir hiyerar\u015fi vard\u0131r. Burada mobil VPN\u2019le kullan\u0131lan en pop\u00fcler protokller yer almakta:<\/span><\/p>\n

IPSec VPN<\/span><\/strong><\/p>\n

(IPSec) \u0130nternet Protokol G\u00fcvenli\u011fi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde \u201ckendi internetine sahip ol\u201d s\u00f6ylemiyle bilinir ve kullan\u0131l\u0131r. IPSec iki sistem aras\u0131nda gidip gelen veriyi koruma alt\u0131na almak i\u00e7in farkl\u0131 VPN aktar\u0131m protokolleriyle kullan\u0131l\u0131r. IPSec\u2019in iki bilgisayar aras\u0131nda gidip gelen veriyi koruma ama\u00e7l\u0131 noktadan noktaya protokol olarak ba\u015far\u0131s\u0131ndan sonra, kurumsal<\/a> \u00e7al\u0131\u015fma ortamlar\u0131 bu protokol\u00fc kendi yaz\u0131l\u0131m istemcileri i\u00e7in kullanmaya ba\u015flam\u0131\u015ft\u0131r.<\/span><\/p>\n

Evden \u00e7al\u0131\u015fan ki\u015filer \u00e7al\u0131\u015ft\u0131klar\u0131 kurulu\u015fun intranetine Wi-Fi ba\u011flant\u0131s\u0131 veya Dial-Up geni\u015f bant vas\u0131tas\u0131yla bir VPN istemcisi kullanarak ba\u011flanabilir. IPSec VPN t\u00fcneli i\u00e7erisindeki trafik i\u00e7in adres seviyesinde\/port kontrollerini ve farkl\u0131 kriptolama algoritmalar\u0131n\u0131 destekler.<\/span><\/p>\n

Ne var ki, IPSec mobil ve kablosuz ortamlar i\u00e7in pek uygun de\u011fildir \u00e7\u00fcnk\u00fc iki u\u00e7 noktada de\u011fi\u015fmeden kalabilmesi i\u00e7in IP adresine ihtiya\u00e7 duyar. Bir a\u011fdan di\u011ferine ge\u00e7mek IPSec protokol\u00fcn\u00fcn ba\u011flant\u0131s\u0131n\u0131 keser ve yeniden oturum a\u00e7may\u0131 gerektirir. Ayr\u0131ca mobil kablosuz a\u011flar\u0131n performans talebini de yeterince kar\u015f\u0131layamaz.<\/span><\/p>\n

SSL VPN\u2019ler<\/span><\/strong><\/p>\n

SSL<\/a> VPN uzaktan kullan\u0131c\u0131larla SSL VPN a\u011f ge\u00e7itleri aras\u0131ndaki uygulama ak\u0131\u015flar\u0131n\u0131 korumak i\u00e7in tasarlanan, taray\u0131c\u0131 tabanl\u0131 VPN\u2019lerdir.<\/span><\/p>\n

Bilgisayarlar\u0131 g\u00fcvenilir a\u011flara ba\u011flayan IPSec VPN\u2019in aksine, SSL VPN bilgisayarlar\u0131 bir web portal\u0131 \u00fczerinden g\u00fcvenilir bir a\u011f i\u00e7indeki baz\u0131 uygulamalara ve a\u011f kaynaklar\u0131na ba\u011flar. Bu portal daha sonra hareket halindeki veri i\u00e7in bir vekil g\u00f6revini g\u00f6r\u00fcr.<\/span><\/p>\n

SSL VPN\u2019ler online trafi\u011fi kriptolamak ve mobil cihazlardan a\u011f kaynaklar\u0131na ula\u015fmak i\u00e7in idealdir. SSL VPN\u2019leri kullan\u0131rken cihazda mutlaka bir g\u00fcvenlik yaz\u0131l\u0131m\u0131n\u0131n ve bir istemci yaz\u0131l\u0131m\u0131n \u00e7al\u0131\u015fmas\u0131 gerekir.<\/span><\/p>\n

Ancak, SSL VPN s\u0131k a\u011f de\u011fi\u015fimlerinden ve ba\u011flant\u0131 kesintilerinden etkilenmez. IPSec\u2019e k\u0131yasla g\u00fcvenli eri\u015fim ve kolay da\u011f\u0131t\u0131m anlam\u0131nda daha fazla fayda sa\u011flar.<\/span><\/p>\n

IKEv2 (Mobike) VPN\u2019ler<\/span><\/strong><\/p>\n

IKEv2 (Mobility and Multi-homing Protocol – Mobike) IPSec\u2019in IKE protokol\u00fcn\u00fcn g\u00fcncellenmi\u015f uyarlamas\u0131d\u0131r. \u00c7ok say\u0131da ve s\u00fcrekli de\u011fi\u015fen IP adresine sahip mobil cihazlar\u0131 destekler. Veri ve kimlik gizlili\u011fini<\/a> sa\u011flamak i\u00e7in genellikle IPSec protokol\u00fcyle birlikte kullan\u0131l\u0131r.<\/span><\/p>\n

IKEv2 temelde bir anahtar de\u011fi\u015fimi protokol\u00fc oldu\u011fundan, mobil cihazlar kapat\u0131ld\u0131\u011f\u0131nda veya kapsama alan\u0131 d\u0131\u015f\u0131na \u00e7\u0131kt\u0131\u011f\u0131nda uygulamalar\u0131n \u00e7\u00f6kmesini engelleyemez.<\/span><\/p>\n

Amaca y\u00f6nelik veya amaca g\u00f6re in\u015fa edilmi\u015f SSL VPN\u2019ler<\/span><\/strong><\/p>\n

Jenerik SSL VPN\u2019ler olumlu bir kullan\u0131c\u0131 deneyimi sa\u011flamak ve t\u00fcm VPN kullan\u0131c\u0131lar\u0131n\u0131 tek bir platformda bir araya getirmek bak\u0131m\u0131ndan pek verimli de\u011fildir. Bu sorunlar kullan\u0131c\u0131lar\u0131n ihtiya\u00e7lar\u0131n\u0131 kar\u015f\u0131lamak i\u00e7in \u00fcretici firmalar taraf\u0131ndan modifiye edilen amaca y\u00f6nelik SSL VPN\u2019ler taraf\u0131ndan giderilir. En bilinen VPN hizmetlerinin \u00e7o\u011fu art\u0131k amaca y\u00f6nelik SSL VPN kullanmaktad\u0131r. Amaca y\u00f6nelik SSL VPN\u2019ler \u00e7oklu IP adreslerinin farkl\u0131 \u00f6zelliklerini sunar ve uygulama deste\u011fi verir. \u00dc\u00e7\u00fcnc\u00fc parti VPN hizmet sa\u011flay\u0131c\u0131lar\u0131 bu amaca tahsis edilmi\u015f sunucular ve log kayd\u0131 tutulmayan ba\u011flant\u0131, Kill Switch se\u00e7ene\u011fi (veri s\u0131zd\u0131r\u0131lmas\u0131n\u0131 \u00f6nlemek i\u00e7in), web sitesi<\/a> blok kald\u0131rma (\u00f6r. US Netflix, Facebook, Twitter vs. eri\u015fimi) ve ortak IP adresleri gibi kullan\u0131c\u0131ya \u00f6zel \u00f6zellikler sunar.<\/span><\/p>\n

Mobil IP VPN\u2019ler<\/span><\/strong><\/p>\n

Mobil IP kullan\u0131c\u0131lar mobil cihazlar\u0131yla hareket halindeyken de\u011fi\u015fen a\u011flar\u0131n IP adresini uygulamalardan gizler. Veri gizlili\u011fini sa\u011flamak i\u00e7in genellikle IPSec protokol\u00fcyle birlikte kullan\u0131l\u0131r. Temel kriptolama ve g\u00fcvenlik i\u00e7in IPSec ve Mobil IP\u2019yi birlikte kullanmak protokollerin getirdi\u011fi ek y\u00fck\u00fc a\u015fa\u011f\u0131daki nedenlerden dolay\u0131 artt\u0131r\u0131r:<\/span><\/p>\n

– U\u00e7 noktalar aras\u0131nda aktar\u0131m halinde olan verinin korunmas\u0131 i\u00e7in IPSec ku\u015fatmas\u0131yla<\/span><\/p>\n

– De\u011fi\u015fen IP adreslerini saklamak i\u00e7in Mobil IP ku\u015fatmas\u0131yla<\/span><\/p>\n

– G\u00fcvenlik birliklerinin ve Home Agent\u2019\u0131n ikinci katman IPSec ku\u015fatmas\u0131yla<\/span><\/p>\n

Bu protokol ek y\u00fck\u00fc ortalama performans\u0131, h\u0131z\u0131 ve ayar kompleksli\u011fini d\u00fc\u015f\u00fcr\u00fcr. IKEv2 gibi, Mobil IP de mobil kablosuz a\u011flar i\u00e7in optimize edilmemi\u015ftir.<\/span><\/p>\n

Her mobil VPN teknolojisinin kendine \u00f6zg\u00fc sorunlar\u0131 olsa da, bu teknolojiler uygulama performans\u0131, kullan\u0131labilirli\u011fi ve verimlili\u011fine dair sorunlar\u0131 ortadan kald\u0131rmak i\u00e7in genellikle geleneksel VPN\u2019lere tercih edilmektedir.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Hareket halindeki veriyi kriptolamaya y\u00f6nelik, SSL ve IPSec gibi geleneksel yakla\u015f\u0131mlar y\u00fcksek h\u0131zl\u0131 kablolu a\u011flar ve g\u00fcvenilir ba\u011flant\u0131lar i\u00e7in tasarlanm\u0131\u015ft\u0131r. Veri aktar\u0131m\u0131n\u0131n…<\/p>\n","protected":false},"author":3,"featured_media":8916,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8915","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-haberler"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/8915","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=8915"}],"version-history":[{"count":6,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/8915\/revisions"}],"predecessor-version":[{"id":9454,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/8915\/revisions\/9454"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media\/8916"}],"wp:attachment":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=8915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=8915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=8915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}