The document discusses several software tools that can be used to simulate and audit computer security. It describes OMNeT++ and NeSSi2, open-source frameworks for simulating communication networks and testing intrusion detection algorithms. It also outlines the features of Secure Windows Auditor, a Windows security auditing tool that identifies vulnerabilities, categorizes risks, and provides solutions to secure systems. A list of additional security tools for auditing Windows, Oracle, SQL servers and analyzing event logs, passwords, access rights and compliance is also provided.