If you’ve ever wondered how to find rogue devices on a network, scan other networks for interesting machines, rapidly find out what operating systems or software service versions are running on hosts on a given network and a whole bunch more, then NMAP is the free, open-source tool for you. And boy, you’re in for a treat, because here’s a full tutorial, courtesy of Al’s Geek Lab. There’s enough in this video to make you a competent network reconnaissance individual. Remember, with great power, comes great responsibility, so use this information wisely and legally!

Some BBSes (Bulletin Boards) are members of Game networks that allow gamers from all over to join in and play in leagues, and also there are BBSes that are members of massive file distribution networks which have terabytes of files to share. Want to know how to get in on the action? Just watch this video!

Whilst I’m at it, here are some personal recommendations of some great BBSes to try out, including my own one!:

The Quantum Wormhole bbs.erb.pw
The Bottomless Abyss bbs.bottomlessabyss.net (port 2023)
Al’s Geek Lab BBS bbs.alsgeeklab.com (port 2323)
20 For Beers 20forbeers.com (port 1337)
The Underground theunderground.us (port 10023)
The Agency BBS agency.bbs.nz
Absinthe BBS absinthebbs.net (port 1940)
Wizards Rainbow wizardsrainbow.com (host to Black Country Rock games)
The Vault BBS thevaultbbs.ddns.net (port 2323)