1. A computer-implemented method for facilitating intelligent auditing of security log data and validation of firewall configuration, the method comprising: storing a set of rules from modeled security policies, wherein a respective rule is represented as a structured statement; converting a set of log data into Web Ontology Language (OWL)-based format; applying the rules to the OWL-format log data; and identifying one or more records of the log data which indicate potential violation of the security-policy rules based on results of applying the rules.