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My centos 5.6 firewall server shares its Internet connection with my windows machine behind it. After the required settings, the windows machine can ping valid ip addresses but it cannot browse valid url (despite the fact that DNS is set for it). Can you please give me a hint?
You need to provide more useful information if we are to help you. You should be providing actual error messages etc. What does "cannot browse" mean? What actually happens? If pinging is working then web pages should be also, from the linux side of things, unless you have iptables rules blocking it. Do you?
I have set eth0 @192.168.10.114 and eth0:1 @172.18.128.1 . The windows machine ip @172.18.209.1
I have activated ip forwarding in /etc/sysctl.conf 'net.ipv4.ip_forward=1' . I run 'sysctl -p' to reload settings . I issued the following command to share internet :
#iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
On windows machine, I set its default GW as @172.18.128.1 . I set DNS for the windows machine like the ones set on centos . The windows machine can ping valid ip but cannot browse valid url.