I was trying to make bridge connection between wlan and eth on Centos..I made Forward and NAT rules and then something wrong with System eth0 connection. It does not connect anymore..Could you help me how to solve this issue? How can I go back working eth0 settings ?Edit :  Here is what I did from command line  iptables -A FORWARD -i eth1 -j ACCEPT iptables -A FORWARD -o eth1 -j ACCEPT sysctl -w net.ipv4.ip_forward=1
After adding FORWARD NAT rules, cannot connect system eth0
networking;centos