| 1 | Script in `/usr/local/bin` on [[Crin2]] to drop abusive IP addresses: |
| 2 | |
| 3 | == ipdrop == |
| 4 | |
| 5 | {{{ |
| 6 | #!bash |
| 7 | #!/usr/bin/env bash |
| 8 | |
| 9 | # location of the logchange script, we assume it has been |
| 10 | # installed int he same directory as this script is in |
| 11 | #DIR="/usr/local/bin" |
| 12 | DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" |
| 13 | LOGCHANGE="$DIR/logchange" |
| 14 | |
| 15 | # check that the script is being run by root |
| 16 | if [[ "$(id -u)" != "0" ]] ; then |
| 17 | echo "You must run '$0' as root or via sudo" |
| 18 | exit 1 |
| 19 | fi |
| 20 | |
| 21 | # check that the logchange script is installed |
| 22 | if [[ ! -f "${LOGCHANGE}" ]] ; then |
| 23 | echo "You need to install the '${LOGCHANGE}' script before you can run $0" |
| 24 | exit 2 |
| 25 | fi |
| 26 | |
| 27 | # check for a IP address on standard input |
| 28 | if [[ $1 ]]; then |
| 29 | IP="$1" |
| 30 | elif [[ ! "$1" ]]; then |
| 31 | echo "Type IP address you would like dropped and then [ENTER]:" |
| 32 | read ip |
| 33 | IP=${ip} |
| 34 | fi |
| 35 | |
| 36 | # drop the ip address |
| 37 | iptables -I INPUT -s $IP -j DROP |
| 38 | # save the changes |
| 39 | bash -c "iptables-save > /etc/network/iptables.save" |
| 40 | # record the changes |
| 41 | logchange "$IP : dropped" |
| 42 | |
| 43 | exit 0 |
| 44 | }}} |