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 ...

If you have ever needed to survey a large group of systems to find out which of them supported some particular service, such as ftp, telnet, ssh or some other particular application, you have probably ...

A couple of simple Linux commands can provide a lot of information about the systems and devices attached to your network. If you’d like to know what systems and devices are attached to your local ...

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 ...

When your network starts acting up, having the right tools in place helps you respond quickly and confidently. Nmap is one of the most versatile network troubleshooting tools available, offering a ...

[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 ...