Hi, I have configured transparent squid on my Linux firewall and masqueraded only ftp ports (20 and 21). My problem is i wanted to block yahoo messenger through squid but after squid rejects yahoo messanger is masquerading with ftp ports and going out and without masquerading anything yahoo messanger is not working. How can I block yahoo messanger with the above situation. Thanx & Regards Mani ===== Subramanian ThenralMani Manager - Technical Yukthi Systems Pvt. Ltd. #178, 5th Main, J.P.Nagar 3rd Phase, Bangalore-560 074 Phone #:6582923 Reach me at:9845211913 __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com