{"id":3424,"date":"2022-06-03T13:45:36","date_gmt":"2022-06-03T10:45:36","guid":{"rendered":"http:\/\/turknetwp.local\/?p=3424"},"modified":"2024-01-15T12:28:52","modified_gmt":"2024-01-15T09:28:52","slug":"nmap-nedir-nasil-kullanilir","status":"publish","type":"post","link":"https:\/\/www.turk.net\/blog\/nmap-nedir-nasil-kullanilir\/","title":{"rendered":"Nmap Nedir? Nas\u0131l Kullan\u0131l\u0131r?"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Bilgisayar a\u011flar\u0131 uzman\u0131 Gordon Lyon (Fyodor) taraf\u0131ndan t\u00fcm a\u011f\u0131 haritalayabilmek, portlar\u0131n ve servislerin inceleyebilmek i\u00e7in geli\u015ftirilen bir ara\u00e7 olan Nmap hakk\u0131nda detaylar\u0131 yaz\u0131m\u0131zda bulabilirsiniz.<\/span><\/p>\n<h2>Nmap (Network Mapper) Nedir?<\/h2>\n<p><span style=\"font-weight: 400;\">Nmap (Network Mapper), a\u011flar\u0131 taramak ve bu tarama sonucunda a\u011fla ilgili bilgiler elde etmek amac\u0131 ile kullan\u0131lan a\u00e7\u0131k kaynakl\u0131 bir Linux komut arac\u0131d\u0131r. A\u011f y\u00f6neticileri Nmap ile g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131, cihazlar\u0131n \u00e7al\u0131\u015f\u0131p \u00e7al\u0131\u015fmad\u0131\u011f\u0131 ve a\u00e7\u0131k ba\u011flant\u0131 noktalar\u0131n\u0131 incelemek i\u00e7in tarama ger\u00e7ekle\u015ftirir.<\/span><\/p>\n<h2>Nmap Kullan\u0131m Alanlar\u0131<\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u011f taramas\u0131 yap\u0131lmas\u0131nda.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u011f ile bilgilerin elde edilmesinde.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u011flara s\u0131zma testlerinin yap\u0131lmas\u0131 durumda.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u011f kurulumu s\u0131ras\u0131nda gerekli olan ayarlar\u0131n kontrol\u00fc a\u015famas\u0131nda.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u011f bak\u0131m\u0131, testi ve y\u00f6netiminde.<\/span><\/li>\n<\/ul>\n<h2>Nmap Tarama T\u00fcrleri Nelerdir?<\/h2>\n<p><span style=\"font-weight: 400;\">TCP Syn (half open) Scan: Kaynak taraf\u0131ndan hedef makineye TCP SYN bayrakl\u0131 segment g\u00f6nderimi ile ba\u015flayan bir tarama t\u00fcr\u00fcd\u00fcr. Portlar\u0131n kapal\u0131 oldu\u011fu senaryoda hedef makineden RST + ACK bayrakl\u0131 segmenti d\u00f6nerken, a\u00e7\u0131k oldu\u011fu durumda SYN + ACK bayrakl\u0131 segment ortaya \u00e7\u0131kar. nmap -sS -v [Hedef_IP] komut kullan\u0131larak tarama ger\u00e7ekle\u015fir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">TCP Connect Scan: Kaynak makine taraf\u0131ndan yap\u0131labilen TCP Connect Scan, kapal\u0131 portlarda ger\u00e7ekle\u015fti\u011fin senaryolarda RST + ACK bayrakl\u0131 segment d\u00f6nd\u00fcr\u00fcrken, a\u00e7\u0131k portlara ger\u00e7ekle\u015fti\u011fi senaryolarda ise hedef taraf\u0131ndan g\u00f6nderilen SYN + ACK bayrakl\u0131 segmente kaynak makine taraf\u0131ndan gelen cevapla tamamlan\u0131r. Tarama i\u00e7in nmap -sT -v [Hedef_IP] komut kullan\u0131l\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">FIN (stealth) Scan: Hedefte yer alan makineye TCP ba\u011flant\u0131 iste\u011fi bulunmadan iletilen segment ile tarama ger\u00e7ekle\u015fir. Kaynak makine arac\u0131l\u0131\u011f\u0131 ile g\u00f6nderilen FIN bayrakl\u0131 segment, hedef makinede kapal\u0131 bir portta ger\u00e7ekle\u015fti\u011fi senaryoda hedef makine RST + ACK bayrakl\u0131 segment d\u00f6nd\u00fcr\u00fcrken, a\u00e7\u0131k portunda ger\u00e7ekle\u015fti\u011fi senaryoda hedef makinede herhangi bir geri bildirim olu\u015fmayacakt\u0131r. Taraman\u0131n yap\u0131lmas\u0131 i\u00e7in komut ise nmap -sF -v [Hedef_IP]<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Xmas Scan: TCP\u2019de yer alan alt\u0131 bayraktan \u00fc\u00e7 tanesi de\u011fi\u015fece\u011fi i\u00e7in bu segment y\u0131lba\u015f\u0131 a\u011fa\u00e7lar\u0131nda bulunan yanan lambalara benzemektedir. Bu nedenle Xmas ismi ile an\u0131lmaktaktad\u0131r. nmap -sX -v [Hedef_IP] komutu kullan\u0131l\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Null Scan: Hi\u00e7bir bayra\u011f\u0131n yer almad\u0131\u011f\u0131 ve ger\u00e7ek hayatta kar\u015f\u0131m\u0131za \u00e7\u0131kmayan bir taramad\u0131r. Portlar\u0131n a\u00e7\u0131k oldu\u011fu senaryoda makineden herhangi bir geri bildirim al\u0131nmaz fakat a\u00e7\u0131k oldu\u011fu senaryoda hedef makineden RST + ACK bayrakl\u0131 segment d\u00f6ner. nmap -sN -v [Hedef_IP] komut ile yap\u0131l\u0131r.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ping Scan: Kaynak makine taraf\u0131ndan hedefte yer alan makineye tek bir ICMP Echo istek paketi g\u00f6nderilir ve IP adresi eri\u015fim sa\u011flanabilir. ICMP filtreleme bulunmad\u0131\u011f\u0131 senaryoda, hedef makine taraf\u0131ndan ICMP Echo cevab\u0131 sa\u011flanacakt\u0131r. Tarama nmap -sP -v [Hedef_IP] komutu ile ger\u00e7ekle\u015fir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">UDP Scan: nmap -sU -v [Hedef_IP] komut ile ger\u00e7ekle\u015ftirilen UDP taramas\u0131nda, kaynak taraf\u0131ndan iletilen UDP diyagram\u0131 hedeften ICMP Port Unreachable cevab\u0131 al\u0131rsa kapal\u0131 oldu\u011fu kabul edilir. UDP diyagram\u0131 ile geri bildirim al\u0131rsa a\u00e7\u0131k ve herhangi bir yan\u0131t alamaz ise <\/span><span style=\"font-weight: 400;\">open|filtered olarak kabul edilecektir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">IP Protocol Scan: Bu tarama t\u00fcr\u00fc ile hedef makinelerde aktif olarak bulunan IP tabanl\u0131 protokoller tespiti i\u00e7in kullan\u0131l\u0131r. E\u011fer tarama sonucunda IP protokol\u00fc aktif ise hedef makineden geri bildirim gelmez fakat aktif de\u011fil ise RST bayrakl\u0131 segment olarak yan\u0131t gelir. nmap -sO -v [Hedef_IP] komutu ile tarama ger\u00e7ekle\u015fir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ACK Scan: Kaynaktan hedefe TCP ACK bayrakl\u0131 segment g\u00f6nderilerek tarama yap\u0131l\u0131r. Tarama i\u00e7in nmap -sA -v [Hedef_IP] komutu kullan\u0131l\u0131r. Hedeften ICMP Destination Unreachable geri bildirimi ya da bildirim al\u0131nmazsa port \u201cfiltered\u201d olarak kabul edilirken, RST bayrakl\u0131 segment bildirimi gelirse port \u201cunfiltered\u201d kabul edilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">IdleScan: Hedefte yer alan makineye TCP ACK bayrakl\u0131 segment g\u00f6nderilen bu tarama t\u00fcr\u00fcnde nmap -sA -v [Hedef_IP] komutu kullan\u0131l\u0131r. Hedef makineden ICMP Destination Unreachable geri bildirimi al\u0131n\u0131r veya herhangi bir bildirim olu\u015fmazsa port \u201cfiltered\u201d olarak, RST bayrakl\u0131 segment d\u00f6ner ise de \u201cunfiltered\u201d kabul edilir.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00d6zetle Nmap; a\u011f\u0131n\u0131z, ana bilgisayarlar\u0131n\u0131z, ba\u011flant\u0131 noktalar\u0131n\u0131z, g\u00fcvenlik duvarlar\u0131n\u0131z, i\u015fletim sistemleriniz hakk\u0131ndaki \u00f6nemli bilgileri h\u0131zla taraman\u0131za ve ke\u015ffetmenize imkan sa\u011flar.<\/p>\n<p><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bilgisayar a\u011flar\u0131 uzman\u0131 Gordon Lyon (Fyodor) taraf\u0131ndan t\u00fcm a\u011f\u0131 haritalayabilmek, portlar\u0131n ve servislerin inceleyebilmek i\u00e7in geli\u015ftirilen bir ara\u00e7 olan Nmap hakk\u0131nda detaylar\u0131 yaz\u0131m\u0131zda bulabilirsiniz. Nmap (Network Mapper) Nedir? Nmap (Network Mapper), a\u011flar\u0131 taramak ve bu tarama sonucunda a\u011fla ilgili bilgiler elde etmek amac\u0131 ile kullan\u0131lan a\u00e7\u0131k kaynakl\u0131 bir Linux komut arac\u0131d\u0131r. A\u011f y\u00f6neticileri Nmap ile [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":4809,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internet-teknolojileri"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nmap Nedir? Nas\u0131l Kullan\u0131l\u0131r? - Turknet Blog<\/title>\n<meta name=\"description\" content=\"Nmap nedir? T\u00fcrleri ve kullan\u0131m alanlar\u0131 nelerdir? 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