iptables articles
Getting Started with iptables in Linuxiptables commandadd a rule (-A --append -I --insert)allow ICMPallow lo interfaceAllow or deny a connection on an interfaceallow SSHDisable DNS resolution (-n --numeric)drop ruleflush rules (-F or --flush)iptables-save commandlisting rules (-L --list --list-rules)reload iptables using the iptables-restore commandremove a rule (-D --delete)
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