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如何恢复iptables的默认设置


  /usr/local/sbin/iptables -P INPUT ACCEPT
  /usr/local/sbin/iptables -P FORWARD ACCEPT
  /usr/local/sbin/iptables -P OUTPUT ACCEPT
  #
  # reset the default policies in the nat table.
  #
  /usr/local/sbin/iptables -t nat -P PREROUTING ACCEPT
  /usr/local/sbin/iptables -t nat -P POSTROUTING ACCEPT
  /usr/local/sbin/iptables -t nat -P OUTPUT ACCEPT
  #
  # flush all the rules in the filter and nat tables.
  #
  /usr/local/sbin/iptables -F
  /usr/local/sbin/iptables -t nat -F
  #
  # erase all chains that's not default in filter and nat table.
  #
  /usr/local/sbin/iptables -X
  /usr/local/sbin/iptables -t nat -X'
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