Footprinting (also known as reconnaissance) commonly refers to one of the pre-attack phases; tasks performed before doing the actual attack. In other words, footprinting is the first step in the evaluation of the security posture of the target organization's IT infrastructure. During this phase, a hacker can collect the following information − Domain name IP [...]
If a hacker can determine what type of operating system a targeted computer is running, he or she can work to exploit the vulnerabilities present in that operating system. OS Fingerprinting is used by security professionals and hackers for mapping remote networks and determining which vulnerabilities might be present to exploit. In fact, it is [...]
First of all, we recommend that you read our other post entitled "TCP/UDP Ports". But, what are free port scanner tools? A port scan learns which ports on a router or firewall are open, and can use this information to find a computer system’s potential weaknesses. A port-scanner tool asks about each port, one at [...]