Replaced snort gpl community rules by emergingthreats.net rules.

[ipfire-2.x.git] / src / initscripts / init.d / snort

#!/bin/sh
########################################################################
# Begin $rc_base/init.d/snort
#
# Description : Snort Initscript
#
# Authors     : Michael Tremer for ipfire.org - mitch@ipfire.org
#
# Version     : 01.00
#
# Notes       :
#
########################################################################

. /etc/sysconfig/rc
. ${rc_functions}

PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin; export PATH

eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
eval $(/usr/local/bin/readhash /var/ipfire/snort/settings)

if [ "$ENABLE_SNORT_ORANGE" == "on" ]; then
        HOME_NET+="$ORANGE_ADDRESS,"
        DEVICES+="$ORANGE_DEV "
fi

if [ "$ENABLE_SNORT_GREEN" == "on" ]; then
        HOME_NET+="$GREEN_ADDRESS,"
        DEVICES+="$GREEN_DEV "
fi

if [ "$ENABLE_SNORT_BLUE" == "on" ]; then
        HOME_NET+="$BLUE_ADDRESS,"
        DEVICES+="$BLUE_DEV "
fi

if [ "$ENABLE_SNORT" == "on" ]; then
        LOCAL_IP=`cat /var/ipfire/red/local-ipaddress`
        if [ "$LOCAL_IP" ]; then
                HOME_NET+="$LOCAL_IP,"
        else
                exit 1 ## Add error handling here
        fi
        DEVICES+=`cat /var/ipfire/red/iface 2>/dev/null`
fi

COUNT=`echo $HOME_NET | wc -m`
HOME_NET=`echo $HOME_NET | cut -c $[$COUNT - 2]`
 
echo "var HOME_NET [$HOME_NET]" >       /etc/snort/vars
echo "var EXTERNAL_NET ANY" >>          /etc/snort/vars

DNS1=`cat /var/ipfire/red/dns1 2>/dev/null`
DNS2=`cat /var/ipfire/red/dns2 2>/dev/null`

if [ "$DNS2" ]; then
        echo "var DNS_SERVERS [$DNS1,$DNS2]" >> /etc/snort/vars
else
        echo "var DNS_SERVERS $DNS1" >> /etc/snort/vars
fi 

case "$1" in
        start)
		# Disable incompatible rules
		for file in $(ls /etc/snort/rules/*.rules); do
			sed -i 's|^alert.*!\[\$DNS_SERVERS|#&|g' $file
			sed -i 's|^alert.*!\$SSH_PORTS|#&|g' $file
			sed -i 's|^alert.*!\$HOME_NET|#&|g' $file
			sed -i 's|^alert.*!\$SQL_SERVERS|#&|g' $file
		done

                for DEVICE in $DEVICES; do
                        boot_mesg "Starting Intrusion Detection System on $DEVICE..."
                        /usr/sbin/snort -c /etc/snort/snort.conf -i $DEVICE -D -l /var/log/snort --create-pidfile --nolock-pidfile --pid-path /var/run/
                        evaluate_retval
			sleep 1
                        chmod 644 /var/run/snort_$DEVICE.pid
                done
                
	  
                if [ -r /var/ipfire/guardian/enable ]; then
		              IFACE=`/bin/cat /var/ipfire/red/iface 2>/dev/null | /usr/bin/tr -d '\012'`
	                sed -e "s/^Interface.*/Interface       ${IFACE}/" /var/ipfire/guardian/guardian.conf > temp
	                mv temp /var/ipfire/guardian/guardian.conf
			chown nobody.root /var/ipfire/guardian/guardian.conf
	              
                  boot_mesg "Starting Guardian..."
		              loadproc /usr/local/bin/guardian.pl -c /var/ipfire/guardian/guardian.conf
		            fi
		    ;;
                
        stop)
               DEVICES=""
               if [ -r /var/run/snort_$BLUE_DEV.pid ]; then
                 DEVICES+="$BLUE_DEV "
               fi
               
               if [ -r /var/run/snort_$GREEN_DEV.pid ]; then
                 DEVICES+="$GREEN_DEV "
              fi
             
              if [ -r /var/run/snort_$ORANGE_DEV.pid ]; then
                 DEVICES+="$ORANGE_DEV "
              fi
      
              RED=`cat /var/ipfire/red/iface 2>/dev/null`
              if [ -r /var/run/snort_$RED.pid ]; then
                 DEVICES+=`cat /var/ipfire/red/iface 2>/dev/null`
              fi
       
              for DEVICE in $DEVICES; do
                 boot_mesg "Stopping Intrusion Detection System on $DEVICE..."
                 killproc -p /var/run/snort_$DEVICE.pid /var/run
              done
              
              rm /var/run/snort_* >/dev/null 2>/dev/null
                
              if [ -r /var/ipfire/guardian/enable ]; then
		          boot_mesg "Stopping Guardian..."
		          killproc /usr/local/bin/guardian.pl
		          fi
        ;;
                
        status)
                statusproc /usr/sbin/snort
                ;;
                
        restart)
                $0 stop
                $0 start
                ;;
                
        *)
                echo "Usage: $0 {start|stop|restart|status}"
                exit 1
                ;;
esac

chmod 644 /var/log/snort/* 2>/dev/null

# End $rc_base/init.d/snort