Monitor Amount of User Traffic

Task: You have a local area network and its users have access to the Internet via a proxy server. You would like to know how much traffic is created by each user.

Solution: Create a filter for each user that monitors the traffic between each user’s IP address and the IP address:port of the proxy server. Such a filter can look like this (the proxy in this example is 192.168.0.1:3128 and the users are 192.168.0.2 and 192.168.0.3, etc).