I set squid as transparency proxy on the LAN..
so all HTTP protocol traffic will go thru squid.

the problem is the yahoo messenger using port 80 (http protocol) as the
transfer file port..
when i enable the port redirect to squid under iptables, the file
cannot be transfer..
but if i off the port redirect to squid server.. the file transfer
under YM is work..

what can i do to solve this problem. it is a setting problem on squid ?

please advice..