prox-fire
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#!/bin/bash
# <prox-fire Proxmox-Port öffnen und schließen>
# version: 0.3
# Copyright (C) <2013> <Heiko Kokemoor>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
EXT_IFACE='eth0'
LO_EXT_IFACE='lo'
IPTABLES='/sbin/iptables'
LOGLEVELDROP='4' # 1=alert,2=critical,3=error,4=warning,5=notice,6=info,7=debug
LOGLEVELACCEPT='4'
PROXPORT='8006'
check_rule_start()
{
CLIENT_IP=$(echo $SSH_CLIENT | awk '{ print $1}')
$IPTABLES -L -n|grep "tcp dpt:$PROXPORT"|grep $CLIENT_IP
}
accept_proxmox()
{
CLIENT_IP=$(echo $SSH_CLIENT | awk '{ print $1}')
$IPTABLES -A INPUT -i $EXT_IFACE -p tcp --dport $PROXPORT -s $CLIENT_IP -j ACCEPT
$IPTABLES -A OUTPUT -o $EXT_IFACE -p tcp --dport $PROXPORT -d $CLIENT_IP -j ACCEPT
echo "Port $PROXPORT for IP $CLIENT_IP is unblocked"
}
drop_proxmox()
{
CLIENT_IP=$(echo $SSH_CLIENT | awk '{ print $1}')
EI=0
EO=0
while [ $EI = 0 ] && [ $EO = 0 ]
do
$IPTABLES -D INPUT -i $EXT_IFACE -p tcp --dport $PROXPORT -s $CLIENT_IP -j ACCEPT
EI=$?
$IPTABLES -D OUTPUT -o $EXT_IFACE -p tcp --dport $PROXPORT -d $CLIENT_IP -j ACCEPT
EO=$?
done
echo "Port $PROXPORT for IP $CLIENT_IP is blocked"
}
stop_all()
{
C=0
L=0
unset Z
declare -a Z
A=$(iptables -L -n |grep $PROXPORT |awk '{print $4}'|grep -v 0.0.0.0||iptables -L -n |grep $PROXPORT |awk '{print $5}'|grep -v 0.0.0.0)
while [ $C = 0 ]
do
L=$(( $L+1 ))
Z[$L]=$(echo $A|awk '{ print $'''$L'''}')
$IPTABLES -D INPUT -i $EXT_IFACE -p tcp --dport $PROXPORT -s ${Z[$L]} -j ACCEPT
$IPTABLES -D OUTPUT -o $EXT_IFACE -p tcp --dport $PROXPORT -d ${Z[$L]} -j ACCEPT
if [ -z ${Z[$L]} ]
then C=1
fi
done
echo "Port $PROXPORT for all IPs blocked"
}
i=$1
case $i in
start)
check_rule_start
if [ $? = 1 ]
then
accept_proxmox
else
echo "IP $CLIENT_IP already unblocked"
fi
;;
stop)
drop_proxmox
;;
stop-all)
stop_all
;;
check)
check_rule_start
;;
*)
echo $(basename $0) '[start|stop|stop-all] - opens a port for the Proxmox Webinterface'
;;
esac