Linux??????--IP Tables
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????????????filter????е??????????????????????????????
????[root@localhost ~]# iptables -F
?????????????INPUT?????????????????????
????[root@localhost ~]# iptables -F INPUT
??????????????????iptables -L?????????????á? ??????????????????????£?
????iptables -P archy target
????????archy???????????target???????????????? filter???й???9??????????????????????????4????????????ACCEPT?????????????DROP???????????REJECT??????????????????ICMP?????????LOG??????????????????????????? ????????????????????????????DROP????????????????????????????е????????????????DROP??
????[root@localhost ~]# iptables -F INPUT DROP
????????????????????????????????????????????????????????д?“??”???????????????????????????????????ping????????С?
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???????iptables -A?????????????????????????£?
????iptables -A archy -i interface -j target
???????У?archy?????????????interface????ù?????????????????target??????????????????????????????????????????????INPUT??????????????????lo????????????
????[root@localhost ~]# iptables -A INPUT -i lo -p ALL -j ACCEPT
?????????й???????????????????????±??
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????iptables????-D???????????????????????????????????????????????????????? ????????--line-numbers????iptables -L??????????????????????£?
????[root@localhost ~]# iptables -L --line-numbers
????????鵽??????????????????????????????
????[root@localhost ~]# iptables -D 18
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