This application was designed to give users usable data surrounding the requests being sent to their Barracuda Web Filter. The application was designed using data from a Barracuda Web Filter 310, even though the access logs should be universal across the Barracuda Web Filter family of appliances I cannot guarantee it will work with other versions. This app is freely available on Splunkbase here:
http://splunk-base.splunk.com/apps/31192/splunk-for-barracuda-web-filter
Pre-deployment Assumptions:
1. You have enabled syslog logging on your Web Filter appliance.