Topology Discovery

The best way to discover the topology of a network is to run a topology discovery using NMAP. Examples: # nmap -sP 10.1.2.0/24.  Now known as #nmap -sn 10.1.2.0/24.  This option tells Nmap not to do a port scan after host discovery, and only print out the available hosts that responded to the host discovery […]

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Creating an inventory with nmap network scanning

Creating systems reports A systems report can be quickly generated by nmap. Simply by scanning a network, an immediate list of systems and their protocols can be seen by using operating system identification (-O) and possibly verbose output (-v) against the complete network (/24): nmap -O -v 192.168.1.0/24 However, the format is unruly, as pages […]

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What is Nmap?

Nmap (“Network Mapper”) is an open source tool for network exploration and security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are […]

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