Firewall issues...kinda [message #31229] |
Sat, 21 June 2008 14:28 ![Go to next message Go to next message](/theme/ovz3/images/down.png) |
detz
Messages: 4 Registered: June 2008
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Junior Member |
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I used the firewall scripts to setup a firewall on the HT and the VM's and it seems to work but I have issues/questions. I can't ping/access anything from the servers but I can access the servers from outsite(web, ssh). Also, I have three VM's setup and one of them can ping but the other two can't.
#!/bin/sh
# firewall Start iptables firewall
# chkconfig: 2345 08 92
# description: Starts, stops and saves iptables firewall
# This script sets up the firewall for the INPUT chain (which is for
# the HN itself) and then processes the config files under
# /etc/firewall.d to set up additional rules in the FORWARD chain
# to allow access to containers' services.
. /etc/init.d/functions
# the IP block allocated to this server
SEGMENT="216.245.192.138/216.245.192.142"
# the IP used by the hosting server itself
THISHOST="216.245.192.138"
# services that should be allowed to the HN;
# services for containers are configured in /etc/firewall.d/*
OKPORTS="6022"
OUTPORTS="8888 8889 6022"
# hosts allowed full access through the firewall,
# to all containers and to this server
DMZS="209.130.152.0/209.130.152.28"
purge() {
echo -n "Firewall: Purging and allowing all traffic"
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P INPUT ACCEPT
iptables -F
success ; echo
}
setup() {
echo -n "Firewall: Setting default policies to DROP"
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -I INPUT -j ACCEPT -m state --state ESTABLISHED,RELATED
iptables -I FORWARD -j ACCEPT -m state --state ESTABLISHED,RELATED
iptables -I INPUT -j ACCEPT -i lo
iptables -I FORWARD -j ACCEPT --source $SEGMENT
success ; echo
echo "Firewall: Allowing access to HN"
for port in $OKPORTS ; do
echo -n " port $port"
iptables -I INPUT -j ACCEPT -s $SEGMENT -d $THISHOST --protocol tcp --destination-port $port
iptables -I INPUT -j ACCEPT -s $SEGMENT -d $THISHOST --protocol udp --destination-port $port
success ; echo
done
echo "Firewall: Allowing access to HN from outside"
for port in $OUTPORTS ; do
echo -n " port $port"
iptables -A INPUT -p tcp --dport $port -j ACCEPT
iptables -A INPUT -p udp --dport $port -j ACCEPT
success ; echo
done
for ip in $DMZS ; do
echo -n " DMZ $ip"
iptables -I INPUT -i eth0 -j ACCEPT -s $ip
iptables -I FORWARD -i eth0 -j ACCEPT -s $ip
success ; echo
done
CTSETUPS=`echo /etc/firewall.d/*`
if [ "$CTSETUPS" != "/etc/firewall.d/*" ] ; then
echo "Firewall: Setting up container firewalls"
for i in $CTSETUPS ; do
. $i
echo -n " $CTNAME CT$CTID"
if [ -n "$BANNED" ]; then
for source in $BANNED ; do iptables -I FORWARD -j DROP --destination $CTIP --source $source ; done
fi
if [ -n "$OPENPORTS" ]; then
for port in $OPENPORTS ; do iptables -I FORWARD -j ACCEPT --protocol tcp --destination $CTIP --destination-port $port ; done
for port in $OPENPORTS ; do iptables -I FORWARD -j ACCEPT --protocol udp --destination $CTIP --destination-port $port ; done
fi
if [ -n "$DMZS" ]; then
for source in $DMZS ; do iptables -I FORWARD -j ACCEPT --protocol tcp --destination $CTIP --source $source ; done
for source in $DMZS ; do iptables -I FORWARD -j ACCEPT --protocol udp --destination $CTIP --source $source ; done
fi
[ $? -eq 0 ] && success || failure
echo
done
fi
}
case "$1" in
start)
echo "Starting firewall..."
purge
setup
;;
stop)
echo "Stopping firewall..."
purge
;;
restart)
$0 stop
$0 start
;;
status)
iptables -n -L
;;
*)
echo "Usage: $0 <start|stop|restart|status>"
;;
esac
And each of the VM's have a conf file...
CTID="110" # the container's ID#
CTNAME="Production" # A human-friendly label for the container
CTIP="216.245.192.139" # the IP address for this container
OPENPORTS="80 443 6022" # ports that should be universally opened
DMZS="209.130.152.0/28" # IPs and blocks that should have full access
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