The Sleuth Kit and Autopsy Browser. Both are open source digital investigation tools (a.k.a. digital forensic tools) that run on Unix systems (such as Linux, OS X, FreeBSD, OpenBSD, and Solaris). They can be used to analyze NTFS, FAT, Ext2, Ext3, UFS1, and UFS2 file systems and several volume system types.
This HOWTO describes how to configure Snort version 1.8.3 to be used in conjunction with the statistical tools ACID (Analysis Console for Intrusion Databases) and SnortSnarf. It also intends to get some internal statistics out of snort, e.g. if there are packets dropped.