Begin adding support for bogons filtering, plus auto updating

ChangeLog

@@ -1,3 +1,7 @@
+0.7 - Brielle Bruns <bruns@2mbit.com>
+	- Beginning support for bogons filtering and updater
+	  script.
+
 0.6 - Brielle Bruns <bruns@2mbit.com>
 	- Fixed some potential ordering issues with NAT
 	- Added file for blocked IPs, plus new config option

include/bogon-bn-agg.txt

@@ -0,0 +1,23 @@
+0.0.0.0/7
+5.0.0.0/8
+14.0.0.0/8
+23.0.0.0/8
+27.0.0.0/8
+31.0.0.0/8
+36.0.0.0/7
+39.0.0.0/8
+42.0.0.0/8
+49.0.0.0/8
+50.0.0.0/8
+100.0.0.0/6
+104.0.0.0/6
+127.0.0.0/8
+169.254.0.0/16
+176.0.0.0/7
+179.0.0.0/8
+181.0.0.0/8
+185.0.0.0/8
+192.0.2.0/24
+198.18.0.0/15
+223.0.0.0/8
+224.0.0.0/3

include/update-bogons

@@ -0,0 +1,41 @@
+#!/bin/bash
+# Script to auto update bogons file for use with firewall script
+
+VERSION="0.1"
+WGET=/usr/bin/wget
+PREFIX=`pwd`
+BOGONSFILE=$PREFIX/bogon-bn-agg.txt
+BOGONSURL="http://www.cymru.com/Documents/bogon-bn-agg.txt"
+REMOVECIDR="(192.168.0.0|10.0.0.0|172.16.0.0)"
+
+
+if [ ! -x $WGET ]; then
+	echo "wget command not found or executable.  Please"
+	echo "edit the update-bogons script."
+	exit 1
+fi
+
+
+echo "Bogons update script - Version $VERSION"
+echo -e "Part of Firewall/SOSDG - http://www.sosdg.org \n"
+echo "Uses The Team Cymru Bogon List located at:"
+echo -e "http://www.cymru.com/Documents/bogon-list.html\n"
+
+if `wget -q -O $BOGONSFILE.new $BOGONSURL`; then
+	echo "Downloaded new bogons file..."
+	mv $BOGONSFILE $BOGONSFILE.old &>/dev/null
+	echo "Backed up $BOGONSFILE to .old..."
+	if [ $REMOVECIDR ]; then
+		grep -vE -e "$REMOVECIDR" $BOGONSFILE.new > $BOGONSFILE
+		echo "Removed blocks listed in REMOVECIDR..."
+		rm -f $BOGONSFILE.new
+	else
+		mv $BOGONSFILE.new $BOGONSFILE
+		echo "Replaced old bogons file with new one."
+	fi
+else
+	echo "Error downloading bogons file.  Please try again later."
+	rm -f $BOGONSFILE.new
+	exit 1
+fi
+exit 0