Syslog Analyzer

[klussier at comcast.net]

Hi all,

As part of search to monitor the internet usage of our branch office, I am looking for a manager-friendly syslog analyzer. The firewall that is in place is capable of writing to a remote syslog server, and the log messages contain every bit of information that the management wants (timestamp, source and destination IP addresses, protocols, data sent/received, etc.) . I just have no way of presenting it to them in a friendly manner (i.e. they want a web site that they can go to and see reports of who is using the most bandwidth, what web sites are being visited, what protocols are being used (http, https, bittorrent, etc.), amount of data being downloaded, etc. 

Does anyone know a a good, granular syslog analyzer for this purpose? Open Source is always prefered, of course. 

TIA,
Kenny