Dear ALL, There is a Linux Gateway Server ( FC9 ) : eth0 connect with ADSL modem ( Dynamic IP ) eth1 connect with HUB [root@xxx ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static BROADCAST=192.168.0.255 IPADDR=192.168.0.254 NETMASK=255.255.255.0 NETWORK=192.168.0.0 ONBOOT=yes NM_CONTROLLED= [root@xxx ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 BOOTPROTO=static BROADCAST=192.168.1.255 IPADDR=192.168.1.254 NETMASK=255.255.255.0 NETWORK=192.168.1.0 ONBOOT=yes NM_CONTROLLED= For NAT setting : iptables -A POSTROUTING -t nat -s 192.168.1.0/24 -o ppp0 -j MASQUERADE BUT All of clients can't ping ISP's IP or domain : C:\>ping 202.175.xxx.xxx Pinging 202.175.xxx.xxx with 32 bytes of data: Reply from 192.168.1.254: Destination net unreachable. Reply from 192.168.1.254: Destination net unreachable. Reply from 192.168.1.254: Destination net unreachable. Reply from 192.168.1.254: Destination net unreachable. So, would you mind to help ? Thanks ! Edward. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines