http___www.test-net.org_bs_faq_reverse-lookup-tool__1.xml
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Providing Reverse Lookup Applies To: Windows Server 2008 In most Domain Name System (DNS) lookups, clients typically perform a forward lookup, which is a search based on the DNS name of another computer as the name is stored in a host (A or AAAA) resource record. This type of query expects an IP address as the resource data for the answered response. DNS also provides a reverse lookup process, in which clients use a known IP address during a name query and look up a computer name based on its address. A reverse lookup takes the form of a question, such as "Can you tell me the DNS name of the computer that uses the IP address 192.168.1.20?" To provide this answer, two special domains, in-addr.arpa and ip6.arpa, are defined in the DNS standards and reserved in the Internet DNS namespace to support reverse queries. The in-addr.arpa domain provides reverse-lookup support for IP version 4 (IPv4)-based IP addresses, while the ip6.arpa domain provides reverse lookup for IP version 6 (IPv6)-based IP addresses. To make it possible for DNS clients to perform a reverse lookup for a host, you perform two steps: Create a reverse lookup zone that corresponds to the subnet network address of the host. In the reverse lookup zone, add a pointer (PTR) resource record that maps the host IP address to the host name. After you create the zone, you manage it much as you would a forward lookup zone. Also, like a forward lookup zone, a reverse lookup zone can be integrated with Active Directory Domain Services (AD DS), and it can be mirrored by secondary and stub zones. You can also delegate a reverse lookup zone, and you can configure a reverse lookup zone to accept dynamic updates, which reduces the need to add and manage pointer (PTR) resource records directly. This section includes the following tasks for providing reverse lookup:
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Obrnuti pretragu je mreža službe koristio određivanje domena ime koje je povezan s obzirom IP adresu koristeći Domenu Ime Sustav (DNS) Internet. To uzima oblik pitanje, kao što su “Možete li mi reći DNS ime kompjuter koji koriste IP adrese 192.168.1.1?” Jedan problem za podršku obrnuto upit proces je razlika kako DNS imenskim prostorom organizuje i indeksa imena i kako IP adrese su dodijelili. Ako je jedini način da odgovoriš na prethodne pitanje je da potrazi u sve domena u DNS imenskim prostorom, obrnuta upit bi trajalo predugo i potrebna previše obradu biti koristan. Da riješim ovaj problem, specijalni domena, u addr.arpa domena, je definisana u DNS standardima i rezervirano na Internetu DNS imenskim prostorom osigurati praktične i pouzdan način da se izvede obrnuti upita. Da stvori obrnuti imenskim prostorom, subdomains unutar u-addr.arpa domena su formirani koristeći obrnuto naručivanja brojeve na dnu-decimalni prvi IP adrese. Ovo obrnuto naručio iz domene za svaki octet vrijednost je trebao zbog, za razliku od DNS imena, kada IP adrese su čitati s lijeva na desno, oni su protumačili u suprotnom način. Kada IP adresa je pročitati s lijeva na desno, to se gleda iz svoje većina sistematski informacije (IP adresu mreža) u prvom dijelu adresa određeniji informacije (IP adresu domaćin) sadržane u zadnji octets. Ovo je razlog zbog kojeg, red IP adresu octets mora biti obrnuto kada zgrade u addr.arpa domena drvo. IP adrese DNS-addr.arpa drvo mogu povjeriti da kompanija kao i oni dobijaju posebne ili ograničen set IP adrese u Internet definisanim adresu časove. Konačno, u addr.arpa domena drvo, kao ugrađen u DNS, zahtijeva da dodatnih resursa rekord (RR) type the pointer (PTR) RR definišu. Ovo RR je nekad napravi mapiranje u rikverc pretragu zoni to obično odgovara domaćin (Jedna) zove RR za DNS kompjuter ime domaćin u svom naprijed pretragu zoni. Molim te, provjeri ovo je sjajna u službi: http://www.test-net.org/services/unit-converter/ ili posjetim BESPLATNO USLUGA meni