[SQU] SQUID NOT DISCONNECT FTP

I try to restrict internet accsess by time but doesnt work.
If enybody downloading some file from internet (with FTP) squid will not disconnect FTP.
WHY??????

In squid.conf added:
***********************************************************************
acl mydomen src 192.168.0.0-192.168.0.200/255.255.255.0
acl all src 0.0.0.0/0.0.0.0
acl time_work1 time MTWHF 7:00-10:00
acl time_work2 time MTWHF 13:00-15:00

http_access allow mydomen time_work1
http_access allow mydomen time_work2
http_access deny all
***********************************************************

WHAT IS WRONG??????

After time_work squid doesnt disconect FTP
Help please!!!!
Version is SQUID-2.3

Regards!
Sinisa.
e-mail: malesevic@sever.co.yu

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