"sudo iptables -F" <--that will flush iptables "sudo iptables -Z" <--that will zero it (i think... you should check just in case) No need to uninstall ufw, just give it a: "sudo ufw disable" it should output "ufw: disabled on system startup" backup: iptables-save > /root/working.iptables.rules resotre: iptables-restore < /root/working.iptables.rules
return false from within a jQuery event handler is effectively the same as calling both e.preventDefault and e.stopPropagation on the passed jQuery.Event object. e.preventDefault() will prevent the default event from occuring, e.stopPropagation() will prevent the evet from bubbling up and return false will do both. Note that this behaviour differs from normal (non-jQuery) event handlers, in which, notably, return false does not stop the event from bubbling up . 所以on前半部分的selector必须是静态的。
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