Open-source research tools

- Another valuable and very interesting category…of tools that we need in our Pen Testing toolbox…is that of open-source intelligence.…Now open-source intelligence is a classification…of tools that means any place we can go…that's open-source free data that's available to us…to do research on what we've found with other tools.…So let's assume that we have an IP address…or we have a domain name.…Either one of those,…we want to find more information about them,…find out what it really represents.…

We can dig down with these tools…and find more information surrounding…the technical response that we got…from perhaps our scanning and enumeration tools.…For those tools we can start off with the Whois tool.…Whois is implemented in multiple ways.…You can have,…there is a Whois command at the command line under Linux,…or there's multiple Whois websites.…We'll take a look at those in just a second.…Whois provides domain details about the IP address…or the domain itself actually that you've requested.…

Nslookup is another query tool…