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Fantastic link, it was just what I was looking for, that page and the more advanced page has given me a plethora of knowledge. Thanks so much!
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Fantastic link, it was just what I was looking for, that page and the more advanced page has given me a plethora of knowledge. Thanks so much!

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I am fooling around with Nmap self studying for my CEH and have a few questions.<br />
<br />
I am trying to use the name server lookup utility in Nmap to find the ip address of a website. Would it be &quot;nmap -sn www.site.com&quot;? <br />
<br />
How would I then determine if port 80 and port 443 are open on this site?<br />
<br />
Thanks!
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I am fooling around with Nmap self studying for my CEH and have a few questions.

I am trying to use the name server lookup utility in Nmap to find the ip address of a website. Would it be "nmap -sn www.site.com"? 

How would I then determine if port 80 and port 443 are open on this site?

Thanks!

Questions about Nmap

A vulnerability is a weakness which allows an attacker to reduce a system's information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness, known as the attack surface. Vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities. Other vulnerabilities include security risks, security defects and constructs in programming languages that are difficult to use properly.

Vulnerabilities

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.