7. The method of claim 4 , further comprising preprocessing one or more additional configuration files such that the classifying includes classifying the security rules across the configuration file and the one or more additional configuration files into classifications of the security rules based on commonality between the security rules in the configuration file and the one or more additional configuration files, wherein the generating for display further includes generating for display configuration file location information associated with each of the security rules in the one of the classifications.
4. The method of claim 1 , wherein the classifying includes classifying the security rules based on commonality between the security rules, each classification including the security rules that share the commonality for that classification, and the method further comprises: receiving a selection of a security rule in the opened configuration file; responsive to the selection of the security rule, determining whether the selected security rule is classified into any of the classifications; and if it is determined that the selected security rule is classified into one of the classifications, generating for display the security rules in the one of the classifications.