The Nmap Project just released the Holiday Edition of its open source cross-platform security scanner and network mapper, with several important improvements and bug fixes. New features in Nmap 7.40 ...

From the book’s website, “Topics include subverting firewalls and intrusion detection systems, optimizing Nmap performance, and automating common networking tasks with the Nmap Scripting Engine. Hints ...

Port scanning tries to reveal any entry points into a system. A web server, for example, must have port 80 open. Even if a firewall protects all else on the machine, by the necessity of its function ...

Who doesn’t love free software? Recently, we conducted an informal, unscientific poll asking readers to tell us about their favorite free information security tools. And boy, did they ever respond.