A number of weeks ago, I provided and described a script that uses nmap to quickly scan a system or subnet for activity on a particular port. Useful for detecting, say, web servers or Oracle ...

Nmap is a popular and versatile tool for port scanning, network discovery, and security auditing, but its scan results can be complex to interpret. Vulnerability remediation platform maker Vicarius ...

(With -T1 it's 217sec). So -T5 helps but it's still very slow. An online port scanner like grc.com can find a port over the internet faster. I was hoping it could do ...

It is certainly well known that “hacker tools” can be used for many legitimate purposes. Nmap, the Network Mapper and security scanner is no exception. These days, it is used routinely to identify the ...

I have my pf on my bsd box, and i have been scanning with nmap and i am wondering what is more secure? having all the ports come back as filtered or come back as closed?

The two software vendors signed a license agreement to jointly develop the software using the Nmap Scripting Engine embedded within the Nmap network discovery tool. Under the terms of the agreement, ...