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Last active January 15, 2020 14:53
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Block an IP with iptables
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iptables.md

Block an IP

Use a real IPv4 instead of x.x.x.x

This will add the block rule to the beginning of the list moving (not overwriting) everything else down.

sudo /sbin/iptables -I INPUT 1 -s x.x.x.x -j DROP

View IP rules

sudo /sbin/iptables -L --line-numbers

Delete a rule

Get the line number (let's call it $line_number) from the previous step (View IP rules).

sudo /sbin/iptables -D INPUT $line_number
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