How to do it...

We will use zenmap to graphically map our network out to a predefined point:

1. Open zenmap by selecting Application | Information Gathering - zenmap. Spend a minute and examine the interface. You have some profile scans, and you can create your own to perform repetitive tasks. You will also see several output tabs. The one we will concentrate on a bit will be the Topology section:

1. Start by using an nmap traceroute scan using ICMP to map the path that we have to scanme.nmap.org. In the target screen, type scanme.nmap.org, and we will use the following options: -sn for a simple ping scan, -PE to specify protocol ICMP, and -traceroute to indicate that we want traceroute information to the destination. Once done, click on Topology to see a graphical view of our network. This information can be used to see other areas we may want to scan:

1. If we have internal access to the network, we can try scanning it against the RFC1918 address block. For speed, we specifically just did the 192.168.0.0/16 address block. As you see, we have found other address blocks that are worth exploring:

1. You can click on Save Graphic, and save the topology as a PDF or PNG file, and insert it into KeepNote. You can also save the entire scan by going to Scan | Save Scan for later reference, or to continue to grow your knowledge of the network host and the host discovery.