Dear all, We are using Red Hat 9.0 as gateway server with Kernel 2.4.20-8 and iptables firewall We are facing some problems with network traffic. FTP is not working IP phone is not working Please find network.pdf using following link for your reference. http://downloadftp.modular-infotech.com/common/share/network.pdf Thanks and regards Swapnil K. System Group Modular Infotech Pvt. Ltd. 26 Electronic Co-operative Estate, Pune Satara Road, Pune. 411 009. Maharshtra. INDIA. Ph: +91-20-24226612 Ext. 206. Fax: +91-20-24225896. E-mail: postmaster@modular-infotech.com Website: www.modular-infotech.com