snort_stat.pl v1.14 (Feb 2001) does statistical analysis on snort logfiles. It's setup to process the syslog alerts that Snort creates and generate a bunch of relavent statistics about the current alerts. If you read the beginning of the script, it tells you how to activate the program as a cron job to provide daily reports of activity recorded by Snort.
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This is a php script which goes to the database (Postgresql) and generate some statistics from the data. For more info see this snortdb page.
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