maximum concurrent user limit

[Ozan UÇAR <mail@xxxxxxxxxxxx>]

Hello Squid Users,

I have been on the lookout for a solution to limit the number of users 
allowed to connect to the Internet. What I am looking for is not 
maxconn. I do not wish to limit the number of total connections per 
client. A client can have as many connections as s/he wishes. Say, I 
want to limit Internet access to 20 users. I have been reading the 
manuals and googling for awhile now, with no luck. Anyone know of a way 
to achieve this?

Thanks in advance,