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#!/bin/sh
#
# Function that enables firewall
#
do_enable_firewall()
{
# creating sshguard chain
iptables -N sshguard 2> /dev/null
ip6tables -N sshguard 2> /dev/null
# block traffic from abusers
iptables -I INPUT -j sshguard 2> /dev/null
ip6tables -I INPUT -j sshguard 2> /dev/null
}
#
# Function that disables firewall
#
do_disable_firewall()
{
# flushes list of abusers
iptables -F sshguard 2> /dev/null
ip6tables -F sshguard 2> /dev/null
# removes sshguard firewall rules
iptables -D INPUT -j sshguard 2> /dev/null
ip6tables -D INPUT -j sshguard 2> /dev/null
# removing sshguard chain
iptables -X sshguard 2> /dev/null
ip6tables -X sshguard 2> /dev/null
}
case "$1" in
enable)
do_enable_firewall
;;
disable)
do_disable_firewall
;;
restart)
do_disable_firewall
do_enable_firewall
;;
*)
exit 1
;;
esac
exit 0
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