Snortalog is a powerful Perl script that summarizes Snort logs, making it easy to view any network attacks detected by Snort. It can generate charts in HTML, PDF, and text output. It works with all versions of Snort, and can analyze logs in three formats: syslog, fast, and full snort alerts. Moreover, it is able to summarize other logs like Fw-1 (NG and 4.1), Netfilter, and IPFilter in a similar way.
You can download it from the following link: https://packetstormsecurity.com/files/download/54004/snortalog_v2.4.1.tgz
Source: https://packetstormsecurity.com/files/54004/snortalog_v2.4.1.tgz.html