Host Name Resolution Overview
In networks running the TCP/IP protocol suite, IP address information is used to forward packet to the destination computer. The packets that are transmitted over the network contain the IP address of the computer sending the packet; and the IP address of the destination computer intended to receive the packet. The IP addresses of computers therefore have to be both unique and correct so that they can be forwarded to the correct destination. IP addresses contain th
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Configuring DNS Server and DHCP IntegrationWindows 2000, Windows XP, and Windows Server 2003 clients can dynamically update their own resource records in Windows Server 2003 DNS. DHCP can also be used to configure down-level clients as DHCP clients.To enable the DHCP server to dynamically update clients; Click Start, Administrative Tools, and then click DHCP to open the DHCP console. Expand the DHCP server node in the console tree. Select and then right-click the DHCP scope, and then click
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A DNS zone is the contiguous portion of the DNS domain name space over which a DNS server has authority or is authoritative. DNS zones contain either domains or subdomains. The DNS namespace can be divided into multiple zones. Users can even host all their zones on a single DNS server. The Windows Server 2003 DNS Server can host up to 20,000 DNS zones.
A DNS zone contains a zone database that contains resource records for all the domains within the zone. Zone files are used if DNS is not inte
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A server is a computer that 'serves' the network that it is connected to. It performs functions that are useful to the network. For example, there are file servers that store data and print servers that handle the network printing jobs. Businesses and other institutions often use servers to store important, possibly confidential, information and allow multiple users to access a single database via the Internet. Servers are also used for web hosting purposes to allow users to create a website and
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Understanding the Purpose of Host Names
In TCP/IP based networks, the packets that are transmitted over the network contain the following IP addresses:
The IP address of the computer sending the packet
The IP address of the destination computer intended to receive the packet.
The IP address information is used to forward the packet to the destination computer. The IP addresses of computers therefore have to be both unique and correct so that they can be forwarded to the correct de
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Common threats to DNS servers include:
Denial-of-service (DoS) attacks: DoS attacks occur when DNS servers are flooded with recursive queries in an attempt to prevent the DNS server from servicing legitimate client requests for name resolution. A successful DoS attack can result in the unavailability of DNS services, and in the eventual shut down of the network.
Footprinting: Footprinting occurs when an intruder intercepts DNS zone information. When the intruder has this information, the i
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