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 ...

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 ...

I'm looking for an online port scanner that lets me give it an IP and list of ports, and tells me if ports are filtered or closed. (like how nmap mentions filtered or closed) GRC shields up refers to ...

The Nmap Project just released the Holiday Edition of its open source cross-platform security scanner and network mapper, with several important improvements and bug fixes. New features in Nmap 7.40 ...

If you're smart and you're connected to the net, you're concerned about computer security. Open ports on your computers are invitations to criminal hackers and other evildoers to wreak havoc - and if ...

In a post to the "Nmap Announce" mailing list, developer Gordon Lyon announced the release of Nmap 7.80 while attending the DEF CON security conference. "I'm here in Las Vegas for Defcon and delighted ...

Last month we began exploring the dangerous and fun world of scanning, focusing on the powerful port scanner Nmap. Nmap helps system administrators and security auditors (and yes, prospective crackers ...