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 ...

You may have heard horror stories about how easy it is for evil system crackers to probe potential victims' systems for vulnerabilities using software tools readily available on the Internet. The bad ...

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?

Nmap 7 is finally here, and it comes packed with significant improvements. The culmination of three and a half years of work from more than 100 contributors and almost 3,200 code commits, the ...