Discovering hosts and services isn't just something that hackers do. A good sysadmin needs to work with an up-to-date view of the systems they manage or those they want to keep an eye on. You have to ...

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 tool that is commonly used by hackers to discover information about a target network. Network technicians also use Nmap to troubleshoot and document their network. The tool produces ...

So far, in my previous articles on Nmap, we've looked at how the scanner can be used to map and audit a network, as well as track down noncompliant devices and services. But hackers can also use Nmap ...

If you need to scan your network, nmap is the tool to use. Nmap can be installed on any Linux distribution. Nmap has several very handy commands. The nmap command (short for network mapper) is a ...

Nmap, short for Network Mapper, is a free and open source tool used for vulnerability checking, port scanning and, of course, network mapping. Despite being created back in 1997, Nmap remains the gold ...

The great thing about tools is that you often can misuse them for a completely different purpose. The end of a screwdriver makes a passable hammer; a butter knife can be a screwdriver, and even a ...

I recently was exchanging e-mail with someone who regularly needs to port scan his own network for vulnerability trending. The port scanning tool of choice for this task is Nmap, but managing the data ...