On 7/16/11, Fajar Priyanto <fajarpri at arinet.org> wrote: > Do this: > 1. Make sure your Centos has two network card. One connected to > internet, one to local lan. Make sure the Centos can already browsing > internet. > Example internet: eth0 192.168.1.1 > local: eth1 192.168.2.1 > > 2. Activate ip forwarding in /etc/sysconfig/sysctl.conf > net.ipv4.ip_forward = 1 > > Run sysctl -r to reload the new setting > > 3. Type this iptables command to share internet: > iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE > > 4. Set your windows box to use 192.168.2.1 as it's default gateway. > Don't forget to give it DNS too like 8.8.8.8 > > 5. I'd suggest you join your Linux Local User Group to have more help. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Thank you very much for your help. At now, I have put my windows machine behind my centos 5.6 firewall server with just one NIC. The windows machine can ping 192.9.9.3 but it cannot browse Internet like connecting to google. I have set its DNS too. Can you please let me know what step is missing? Thank you