In the pre-tagging days of web analytics when dinosaurs roamed the landscape, log files weren’t the only way to collect data. Packet sniffing or network-based data collection, popularized by Accrue Software,was also available. Proponents argued that packet sniffing was superior because data collection becomes “hands off” once the collection appliance is installed between the router and network switch. There are no tags to maintain, nor log files to administer.

If you’d like to look into this method of data collection, there are a few solutions out there that merit your attention. Read my post on CMS Watch to find out which ones deserve a look.
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Posted by: Phil Kemelor VP, Strategic Consulting Services – Semphonic
Analyst – CMS Watch Web Analytics Report
Author – The Executive’s Guide to Web Site Measurement and Testing
Blog – CMS Watch Analytics Channel