Whois queries are used to determine the IP address ranges associated with clients. A whois query can be run on most UNIX environments. In a Windows environment, the tools such as WsPingPro and Sam Spade can be used to perform whois queries. Whois queries can also be executed over the Web from www.arin.net and www.networksolutions.com.

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What is NetBIOS?

NetBIOS is a Microsoft service that enables applications on different computers to communicate within a LAN. NetBIOS systems identify themselves with a 15-character unique name and use Server Message Block,

LDAP Injection Vulnerabilities

LDAP Injection Overview LDAP Injection attacks are not as common as the other types of injection attacks, but if your product uses an LDAP server this must be tested. An

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IP subnetting is a fundamental subject that’s critical for any IP network engineer to understand, yet students have traditionally had a difficult time grasping it. Over the years, I’ve watched