Your boss calls you into her office. You stare at the fake mahogany panels that line her wall. She strikes a match and asks, “Did you see the news? Criminals broke into our competitor's network.

Knowing what services are running on your systems, and being able to identify if and when any of those services change, is the first step in securing your netwsork. Many tools can accomplish this, but ...

Nmap is among a network penetration tester's best friends, sitting high on a pedestal with the Metasploit Framework. I've been using the tool my entire career for network mapping and host discovery, ...

If you haven't started scanning your network for UDP port 17185, then you better start now. This past week at BSides Las Vegas and Defcon, HD Moore, CSO of Rapid7 and Metasploit chief architect for ...

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 ...

[b]modem scan nmap[/b][b][/b] sudo nmap -v -O --osscan-guess 192.168.0.1/24 map scan report for 192.168.0.8 Host is up (0.0070s latency). Not shown: 999 closed ports PORT STATE SERVICE 5555/tcp open ...

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 ...

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 ...