Solve the problem of \\"Setting chains to policy ACCEPT\\" error in Linode iptables

This problem was recorded before but not edited into an article. Just in the morning, some netizens mentioned that they also encountered this problem. When we configure a certain software testing environment, an error message like Setting chains to policy ACCEPT: security raw nat[FAILED]filter appears when restarting iptables. It seems that this has not happened before in the same VPS release system. The problem only occurs this time in Linode VPS.

When you encounter a problem, you search for answers to see if you can find a solution.

First, edit the /etc/init.d/iptables file

Find the location of \\”case \\”$i\\” in\\” and add the script directly below

security)$IPTABLES -t filter -P INPUT $policy \\\\&& $IPTABLES -t filter -P OUTPUT $policy \\\\&& $IPTABLES -t filter -P FORWARD $policy \\\\| | let ret+=1;;

As shown below:

Save the file and exit.

Second, restart iptables

service iptables restart

Then we can see the error-free results.

This will completely solve this problem.

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