有没有办法删除多行而不iptables
知道我的里面有什么iptables
?
例如,我想删除端口 80 的每个端口转发,如下所示iptables
:
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
REDIRECT tcp -- anywhere anywhere tcp dpt:http redir ports 8080
REDIRECT tcp -- anywhere anywhere tcp dpt:https redir ports 8443
有没有办法用一个命令删除这两行?
答案1
这是一个工作脚本:
iptables -t nat --list-rules PREROUTING | while IFS='' read -r line || [[ -n "$line" ]]; do
RULE443=$(echo $line | grep "REDIRECT --to-ports 8443")
RULE80=$(echo $line | grep "REDIRECT --to-ports 8080")
if [ "$RULE80" != '' ]
then
PORT80=$(echo $RULE80 | grep -o '\-\-dport.*' | cut -d' ' -f2)
iptables -t nat -D PREROUTING -p tcp --dport $PORT80 -j REDIRECT --to-port 8080
elif [ "$RULE443" != '' ]
then
PORT443=$(echo $RULE443 | grep -o '\-\-dport.*' | cut -d' ' -f2)
iptables -t nat -D PREROUTING -p tcp --dport $PORT443 -j REDIRECT --to-port 8443
fi
done