One reason would be an Intrusion Detection System: make sure no malware gets downloaded, or to analyze traffic for stuff that looks like malware phoning home.

One reason would be an Intrusion Detection System: make sure no malware gets downloaded, or to analyze traffic for stuff that looks like malware phoning home. http://en.wikipedia.org/wiki/Intrusion_detection_system http://en.wikipedia.org/wiki/Intrusion_detection_system