squid + tcpproxy + firestarter

[pogey]

Hi..

I have redhat linux 9 configured with two network cards eth0 directly conneted internet eth1 is for local connection and setup squid to share http connection.  My squid is running ok. For my email i setup tcpproxy + pop3.proxy and for my firewall i use firestarter. I run tcpproxy and firestarter with open port 110 and its function ok just for a while, but then my connection is lost. when i ping to outside there is no connection. But when i disable firestarter and restart my network service my connection get back ok but my client cannot send or receive email. Can someone help me to solved this problem.  

Thank you!...