The question is simple: Does the web gateway provide quota for users based on time and traffic used?
The Web Gateway can provide reports on a users or IP's browse times, but does not apply time or traffic based quotas at this time.
I did't find any quota option in this product
If this Info helps to resolve the issue please Mark as Solution
Yes the Web Gateway currently does not have any sized based quotas.
add the request in "IDEAS" section
Help Link: http://www.symantec.com/business/support/overview.jsp?pid=54619