Nice video Irongeek ...always good to see the intuitive vids you make on pentesting
By the way, for those that watched the video, he touches upon the fact that Firefox caches DNS; for those that want to disable this, do as follows:
- Goto about:config in the address bar.
- Right click on the list of properties, select new > integer in the context menu
- Enter network.dnsCacheExpiration as the preference name and 0 as the integer value
- Add another integer preference, this time use network.dnsCacheEntries as the preference name and again 0 as the value