What is DNS
As we know, each computer needs an IP address to get connected with others. Internet, where all computers are connected with each other, it is very difficult to remember each address. Human-readable...
View ArticleWindows Server 2003-DNS Resource Records
DNS database is a collection of resource records and each records point to a particular object. These are the resource records: 1. Address Mapping (A) Record : This record maps the host name to the...
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How To Troubleshoot With Nslookup Command
Nslookup is a nice tool to check all records registered with each domain name and with their services. For example, if we need to know the IP address of SMTP server of a particular domain or a list of...
View ArticleHow To Secure DNS Server In Windows Server 2003
Below are some Tips to protect the DNS server:- 1. Zone transfer must be secured and target only specific DNS Servers. 2. DNS must always be in DMZ or perimeter network . 3. Install Latest...
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Round Robin in Windows Server 2003
It means in clock-wise fashion and is used when our network consists of more than one DNS servers and we want request to resolve DNS query to be distributed to all DNS servers equally. DNS server...
View ArticleRoot Hints in Windows Server 2003
Root hints are responsible for forwarding unresolved DNS queries to other DNS server authoritative for that domain. Our DNS server must know the IP address of servers which will forwards DNS queries to...
View ArticleRecurssive Query in Windows Server 2003
When a user enter any name in its browser, like www.example.com , then that request is first forwarded to the preferred DNS , which in most of the cases is the DNS server of your local ISP. Think of a...
View ArticleForwarders in Windows Server 2003
Forwarders are the servers responsible for performing recursive queries on those requests which are not resolved by our DNS Servers. Our DNS server will then works as a DNS client of the forwarders....
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Conditional Forwarding in Windows Server 2003
Conditional forwarding was first introduced in Windows Server 2003 by Microsoft. It speed up the DNS query requests if used properly. It accepts the name resolution request for a specific domain. For...
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