September 2012
Intermediate to advanced
1680 pages
88h 3m
English
The Nslookup command-line utility is perhaps the most useful tool for DNS client troubleshooting. Its functionality is basic, but the information obtained can do wonders for helping to understand DNS problems. Nslookup, in its most basic operation, contacts the default DNS server of a client and attempts to resolve a name that is inputted. For example, to test a lookup on www.companyabc.com, type nslookup www.companyabc.com at the command prompt. Different query types can also be input into Nslookup. For example, you can create simple queries to view the MX and SOA records associated with a specific domain by following these steps, which are illustrated in Figure 10.17:
1. Open a command prompt instance ...
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