iptables commans needed urgunly pleeeeze

Thanks in advance iptables commans needed urgunly pleeeeze

1- Command to remove an IP entered in an error using this command:

iptables -A INPUT -s XXX.XXX.XXX.XXX. -d 0/0 -j DROP

2- is it possible at all to insert a wild card in the IP to be dropped like: XXX.XXX.XXX.% (is the wild card % or *)??

thanks again

 

 

 

 

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