Vulnerability scanners
Vulnerability scanning activities are a key part of the work of a blue team. It is also usually the starting point of the vulnerability management process. As usual, there are commercial and free solutions. Currently, the main free solution is OpenVAS, which is still maintained with updated vulnerability feeds. One important drawback of the free OpenVAS version is that it receives update feeds with a 14-day delay, which could be a real issue depending on the criticality of our systems. OpenVAS also has a kind of distributed mode, which means we can have a central server (manager) and remote scanners that will perform the scans in remote LANs and only send the results to the manager for centralization. The famous Network Mapper (Nmap) also offers vulnerability scanning functionalities thanks to the Nmap Scripting Engine (NSE) scripts offered by the community. This last solution may be sufficient to detect specific vulnerabilities in our organization (active hunting...