1. 找出行號，方便刪除 root@cw2-netflow:~# iptables -L --line-numbers Chain INPUT (policy ACCEPT) num target prot opt source destination 1 sshguard all -- anywhere anywhere Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Chain sshguard (1 references) num target prot opt source ...