plus utilis (les script utiliss sont les scripts de xabi dans
/usr/scripts/surveillance) darcs-hash:20051025182637-4ec08-e5b5aad14e959bcdc7ee559aeb3d17c36495b591.gz
This commit is contained in:
chove
parent
86fdb945d9
commit
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7 changed files with 0 additions and 1210 deletions
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#!/bin/sh
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##
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## Analyse
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##
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## Made by Tab <rv@crans.org>
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##
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## Started on Tue 09 Oct 2001 01:28:25 AM CEST tab
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## MAJ : 06/02/2003 -- Fred
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TEMPFILE="/tmp/analyse.mail"
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# Options pour les stats traffic
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PROG="/usr/scripts/analyse_komaz/nacct.py"
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OPTIONS="-N 15"
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OPTIONS2="-N 15 -c 2"
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OPTIONS3="-N 15 -c 5"
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# Divers chemins
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BLACKLIST="/var/zamok/CRANS/blacklist.cf"
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AUTODISC_LOG="/var/log/autodisconnect.log"
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VIRUS_BLACKLIST="/tmp/virus_blacklist"
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#################################################################################
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# Machines ayant été disconnectées dans les 24h :
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# affichage de leur historique
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echo "Bilan des autodisconnexions des dernières 24h :" >> $TEMPFILE
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echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" >> $TEMPFILE
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if [ -e $AUTODISC_LOG ]; then
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for host in $(awk -F'[ .]' '/'$(date --date=yesterday +%d-%m-%Y)'-(0[7-9]|1|2)|'$(date +%d-%m-%Y)'-0[0-6]/ {print $2}' $AUTODISC_LOG)
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do
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echo "$host :"
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( awk -F'-' '/'$host'.crans.org/ {print $3$2"@"$1"/"$2"/"$3" : autodisconnecté"}' $AUTODISC_LOG
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awk -F'[:/ ]' '/^'$host'/ || /^#'$host'/ {print $6$5"@"$4"/"$5"/"$6" : déco manuelle (->"$7"/"$8"/"$9")"}' $BLACKLIST ) \
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| sort -r \
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| awk -F@ '{print "\t"$2}'
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done >> $TEMPFILE
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else
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echo -e "Problème avec $AUTODISC_LOG" >> $TEMPFILE
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fi
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echo -e "\n" >> $TEMPFILE
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#################################################################################
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# Vérolés
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if [ -e $VIRUS_BLACKLIST ]; then
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echo "Bilan des bloquages web pour virus :" >> $TEMPFILE
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echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" >> $TEMPFILE
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echo "Il y a $(wc -l $VIRUS_BLACKLIST | awk '{print $1}') machines infectées." >> $TEMPFILE
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if [ -e $VIRUS_BLACKLIST.hier ] ; then
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diff -U0 -s $VIRUS_BLACKLIST.hier $VIRUS_BLACKLIST \
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| egrep -v '\-\-\-|\+\+\+|@@' >> $TEMPFILE
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else
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cat $VIRUS_BLACKLIST >> $TEMPFILE
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fi
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cp -f $VIRUS_BLACKLIST $VIRUS_BLACKLIST.hier
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echo -e "\n" >> $TEMPFILE
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fi
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#################################################################################
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# Statistiques
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echo "Statistiques upload/download :" >> $TEMPFILE
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echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" >> $TEMPFILE
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if [ -x $PROG ]; then
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echo -e "Upload (Download) pur normal :\n" >> $TEMPFILE
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$PROG $OPTIONS | tail -15 | awk -F "|" '{print $1" ("$3")"" "$7}' >> $TEMPFILE
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echo -e "\nUpload total normal :\n" >> $TEMPFILE
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$PROG $OPTIONS2 | tail -15 | awk -F "|" '{print $2" "$7}' >> $TEMPFILE
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echo -e "\nUpload total exempté :\n" >> $TEMPFILE
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$PROG $OPTIONS3 | tail -15 | awk -F "|" '{print $5" "$7}' >> $TEMPFILE
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else
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echo -e "Problème avec $PROG" >> $TEMPFILE
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fi
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#################################################################################
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# Envoi du mail
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cat $TEMPFILE |/usr/bin/mail -s "Stats -- $(date --date=yesterday +%A\ %d\ %B\ %Y)" disconnect@crans.org
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rm -f $TEMPFILE
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@ -1,215 +0,0 @@
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#!/bin/zsh
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##
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## autodisconnect
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##
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## Made by stransky
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## Login stransky <stransky@crans.org>
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##
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## Started on ven 25 jan 2002 22:24:26 CEST Nicolas STRANSKY
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## Last update lun 03 nov 2003 07:38:51 CET Nicolas STRANSKY
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##
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## script de surveillance automatique de l'upload.
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## à lancer par cron.
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export LANG=fr_FR@euro
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LIMITE_SOFT=100
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LIMITE_HARD=700
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MAIL_INTERVAL=100
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LOG=/var/log/autodisconnect.log
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LOGFILE=/var/log/net-acct/net-acct.log
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outpF=$(mktemp)
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TEMPFILE=/tmp/uploaders
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LISTFILE=/tmp/liste
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EMPREINTE_NEW=/tmp/empreinte-new
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EMPREINTE=/tmp/empreinte
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HABITUES=/tmp/habitues # Liste des habitués du système
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BLACKLISTES=/tmp/blacklistes
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BLACKLISTES_NEW=${BLACKLISTES}-new
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BLACKLISTE_ZAMOK=/var/zamok/CRANS/blacklist.cf
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VERIF=0 # on envoie un mail à disconnect si VERIF=1
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RENEW=1 # si cette valeur reste à 1 on vide le fichier empreinte.
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date=$(date +%A\ %d\ %B\ %Y\ \ %T)
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date2=$(date +%A\ %d\ %B\ %Y)
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date3=$(date +%d-%m-%Y-%T)
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DIR=/usr/scripts/analyse_komaz
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# Si /tmp/exempts.pickle n'existe pas, on relance exempts.py
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if [ ! -f /tmp/exempts.pickle ]; then
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$DIR/exempts.py
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fi
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# On renforce déjà la blacklist (au cas où le firewall a été relancé)
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if [ -f $BLACKLISTES ]; then
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while read machine ; do
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if ! (/sbin/iptables -nL BLACKLIST_SRC | grep -q "^REJECT.*$machine "); then
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/sbin/iptables -I BLACKLIST_SRC -s $machine -j REJECT
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echo blacklist $machine
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fi
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done < $BLACKLISTES
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fi
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# Retourne l'adresse email correspondant à la machine donnée en paramètre
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# Le premier paramètre est le nom de la machine en FQDN (lucas.crans.org)
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getAdresseMail() {
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# Quel est l'adhérent de la machine ?
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aid=$(ldapsearch -LLL -H ldaps://sila.crans.org -x -D "cn=admin,dc=crans,dc=org" \
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-w $(cat /etc/ldap.secret) -b "ou=data,dc=crans,dc=org" \
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host=$1 dn | head -1 | awk -F, '{print $2}')
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# On affiche son adresse email
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mail=$(ldapsearch -LLL -H ldaps://sila.crans.org -x -D "cn=admin,dc=crans,dc=org" \
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-w $(cat /etc/ldap.secret) -b "ou=data,dc=crans,dc=org" $aid \
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mail | awk -F': ' '($1 ~ /^mail$/) {if ($2 ~ /@/) print $2; else print $2"@crans.org"}')
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if [[ -z $mail ]]; then
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echo disconnect@crans.org
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else
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echo $mail
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fi
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}
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echo $date > $LISTFILE
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echo " " >> $LISTFILE
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#/usr/scripts/analyse.pl -u -n 10 -f $LOGFILE --noperiod | egrep -v "zamok|komaz|sila" | \
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#grep -v "Ko" | awk '{print $1" "$3}' | sed 's/Mo/ /g' | sed 's/\.[0-9]*Go/000 /g' > $TEMPFILE
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$DIR/nacct.py -n -N 25| grep -v 'NoDNS_' > $outpF
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if [ $? -eq 255 ]; then
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echo "Problème avec nacct.py : lock"
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exit 1
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fi
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cat $outpF | tail -25 | awk -F "|" '{print $1" "$7}' | egrep -v "136\.(1|2|3|4|6|8|9|10)$" > $TEMPFILE
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# Pour conserver un historique de la sortie de nacct.py
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echo -e "\n$date" >> /tmp/nacct_history
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cat $outpF >> /tmp/nacct_history
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if ! grep -q "^===========================================================================" $outpF ; then
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echo "Pas de données ; problème avec nacct"
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exit 1
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fi
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rm $outpF
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while read upload machine ; do # On lit dans $TEMPFILE
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if ! (/sbin/iptables -nL BLACKLIST_SRC | grep -q "^REJECT.*$machine ") && [ $( echo $upload | cut -d '.' -f 1 ) -ge $LIMITE_SOFT ]
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then # Si la machine dépasse la limite soft et n'est pas déjà blacklistée,
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RENEW=0 # on ne vide pas le fichier empreinte
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hostname=`host $machine | awk '/Name:/ {print $2}'`
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if [ $( echo $upload | cut -d '.' -f 1 ) -ge $LIMITE_HARD ]
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then
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/sbin/iptables -I BLACKLIST_SRC -s $machine -j REJECT
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echo blacklist $hostname
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echo "$hostname FIREWALISÉ ! ($upload Mo)" >> $LISTFILE
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echo "$date3 $hostname $upload" >> $LOG
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echo "$machine" >> $BLACKLISTES
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VERIF=1
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# Envoi d'un mail pour prévenir la personne (à modifier pour éventuellement utiliser sendmail)
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# On doit tester la variable EMAIL ?
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EMAIL=$(getAdresseMail $hostname)
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echo $EMAIL
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cat <<EOF | mail -s "Deconnexion temporaire de $hostname" -a "From: disconnect@crans.org" -a "Reply-To: disconnect@crans.org" $EMAIL
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Bonjour,
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Ta machine $hostname a été temporairement déconnectée parce que tu uploadais
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une quantité importante de données. Tu recevras dans moins de 24h
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un mail indiquant ta reconnexion. Tu as toujours accès au web ainsi qu'à tes mails
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mais les autres services sont suspendus. Si cela se renouvelle trop souvent, tu
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risques d'être déconnecté entièrement pour une durée plus importante. Il
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t'appartient donc de surveiller cela de plus près et de faire en sorte que ta
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machine n'uploade pas de manière excessive à l'avenir.
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Pour plus d'informations, tu peux consulter la page:
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http://wiki.crans.org/moin.cgi/VieCrans_2fD_e9connexionPourUpload
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Si tu as des questions, contacte disconnect@crans.org
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EOF
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elif ! (grep -q $hostname $EMPREINTE) # si la machine n'a pas encore été repérée par autodisconnect
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then
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EMAIL=$(getAdresseMail $hostname)
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# On évince les habitués, ils reçoivent assez de mails comme ça
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if ! (grep -q $EMAIL $HABITUES); then
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echo "$hostname uploade ($upload Mo)" >> $LISTFILE
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echo "$hostname $upload" >> $EMPREINTE_NEW
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VERIF=1 # Pas d'envoi de mail dans ce cas
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cat <<EOF | mail -s "Ta machine $hostname uploade" -a "From: disconnect@crans.org" -a "Reply-To: disconnect@crans.org" $EMAIL
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Bonjour,
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Ta machine $hostname uploade une quantité importante de données vers l'extérieur
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(actuellement, $upload Mo). Si cela continuait, elle serait automatiquement
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déconnectée pour une durée d'environ 24 heures. Il t'appartient donc de
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surveiller cela de plus près et de faire en sorte que ta machine n'uploade pas
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de manière excessive à l'avenir.
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Pour plus d'informations, tu peux consulter la page:
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http://wiki.crans.org/moin.cgi/VieCrans_2fD_e9connexionPourUpload
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Si tu as des questions, contacte disconnect@crans.org
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EOF
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fi
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elif [ `echo $upload | cut -d '.' -f 1` -gt `echo $(cat $EMPREINTE | \
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awk -v MACHINE=$hostname '$0 ~ MACHINE {print $2}')"/1+$MAIL_INTERVAL"|bc` ]
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# si la machine a uploadé $MAIL_INTERVAL Mo de plus que la dernière
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# fois qu'on a envoyé un mail à son sujet, on renvoie un mail.
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then
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echo "$hostname uploade encore. ($upload Mo)" >> $LISTFILE
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echo "$hostname $upload" >> $EMPREINTE_NEW
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else # sinon on conserve les infos sur la machine
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cat $EMPREINTE | grep $hostname >> $EMPREINTE_NEW
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fi
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fi
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done < $TEMPFILE
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if [ $RENEW -eq 1 ] ; then cat /dev/null > $EMPREINTE ; fi
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if [ -f $EMPREINTE_NEW ] ; then mv $EMPREINTE_NEW $EMPREINTE ; fi
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# Reconnexion des machines déconnectées
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rm -f $BLACKLISTES_NEW
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if [ -f $BLACKLISTES ]; then
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while read machine ; do
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# Est-ce que cette machine est toujours dans le TOP 12 ?
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# Juste pour vérifier où se situe le problème -- Nico
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echo "$machine firewalisé en est encore à : $(awk '($2 == "'$machine'") {print $1}' $TEMPFILE)"
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if ! (grep -q $machine'$' $TEMPFILE) || \
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[ $LIMITE_SOFT -ge $(awk '($2 == "'$machine'") {print $1}' $TEMPFILE | cut -d '.' -f 1 ) ]; then
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VERIF=1
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# On doit la reconnecter : on la vire de BLACKLISTES
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grep -v $machine $BLACKLISTES > $BLACKLISTES_NEW
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hostname=`host $machine | awk '/Name:/ {print $2}'`
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# Reconnexion
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if ! (grep -q "^$(echo $hostname | cut -f1 -d.)" $BLACKLISTE_ZAMOK )
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then # Si la machine est blacklistée sur zamok on ne reconnecte pas
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/sbin/iptables -D BLACKLIST_SRC -s $machine -j REJECT
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echo "La machine $hostname a été reconnectée. ($(awk '($2 == "'$machine'") {print $1}' $TEMPFILE) Mo)" >> $LISTFILE
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EMAIL=$(getAdresseMail $hostname)
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cat <<EOF | mail -s "Reconnexion de $hostname" -a "From: disconnect@crans.org" -a "Reply-To: disconnect@crans.org" $EMAIL
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Bonjour,
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Ta machine $hostname avait été temporairement déconnectée, elle est maintenant
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reconnectée. Vérifie que tu ne fais plus d'upload pour éviter de te faire
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déconnecter une nouvelle fois.
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EOF
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else
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echo "La machine $hostname reste blacklisstée sur zamok. ($(awk '($2 == "'$machine'") {print $1}' $TEMPFILE) Mo)" >> $LISTFILE
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fi
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echo reconnexion $machine
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fi
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done < $BLACKLISTES
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fi
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# Bug, on n'enlève qu'une machine à chaque fois, pas trop grave
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if [ -f $BLACKLISTES_NEW ]; then cat $BLACKLISTES_NEW > $BLACKLISTES; fi
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# Eventuellement, appel de firewall blacklist si on n'a pas encore reconnecté
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if [ $VERIF -eq 1 ]
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then
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echo -e "\n-- \ncréé par autodisconnect." >> $LISTFILE
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cat $LISTFILE | /usr/bin/mail -s "upload temps réel - $date2" -a "From: disconnect@crans.org" -a "Reply-To: disconnect@crans.org" pessoles@crans.org
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fi
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exit 0
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@ -1,42 +0,0 @@
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#! /usr/bin/env python
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# -*- encoding: iso-8859-15 -*-
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import cPickle,re
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exempts = { 'dst' : [], 'src_dst' : {} }
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"""
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exempts['dst'] : liste de réseaux (exprimés en regex) vers lesquels le traffic est exempté
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exempts['src_dst'] [ IP ] : idem, mais seulement en provenance de IP.
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"""
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exempts['dst'].append( '138\.231\..*' ) # * => *.ens-cachan.fr
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exempts['src_dst']['138.231.149.10'] = ['134\.157\.96\.216'] # rivendell.wifi.crans.org => *.ccr.jussieu.fr
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exempts['src_dst']['138.231.141.187'] = ['129\.104\.17\..*', '134\.157\.96\.216' ] # barad-dur.crans => *.polytechnique.fr et *.ccr.jussieu.fr
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exempts['src_dst']['138.231.136.7'] = ['195\.221\.21\.36'] # egon => ftp.crihan.fr pour rsync mirroir debian/fedor
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exempts['src_dst']['138.231.143.62'] =['193\.49\.25\.152' , '138\.195\.34\..*' ] # ogre => centrale / labo fast (psud)
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exempts['src_dst']['138.231.140.173'] =['195\.220\.131\.33' , '195\.220\.133\.98' ] # duckien => rebol.ephe.sorbonne.fr oss.ephe.sorbonne.fr, 28/1/2005 -- Bilou
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exempts['src_dst']['138.231.137.230'] =['129\.175\.100\.221' ] # helene => orsay
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exempts['src_dst']['138.231.136.7'] =['138\.195\..*' ] # egon => centrale paris
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exempts['src_dst']['138.231.139.106'] =['138\.195\.74\..*' ] # schuss => centrale paris
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exempts['src_dst']['138.231.139.106'] =['138\.195\.75\..*' ] # schuss => centrale paris
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exempts['src_dst']['138.231.150.106'] =['157\.99\.164\.27' ] # sayan-ftp.wifi => chile.sysbio.pasteur.fr
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def compileRegs( exempts) :
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L = []
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for s in exempts['dst'] :
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L.append( re.compile(s) )
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exempts['dst'] = L
|
||||
for k in exempts['src_dst'].keys() :
|
||||
L = []
|
||||
for s in exempts['src_dst'] [k] :
|
||||
L.append( re.compile(s) )
|
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exempts['src_dst'] [k] = L
|
||||
|
||||
|
||||
compileRegs( exempts )
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fd=open("/tmp/exempts.pickle","wb")
|
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cPickle.dump(exempts, fd)
|
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|
|
@ -1,28 +0,0 @@
|
|||
#!/usr/bin/awk -f
|
||||
#Lecture des logs du firewall pour retourner la liste des machines floodant
|
||||
#
|
||||
#Arguments :
|
||||
#<fichier(s) à scanner> <autre fichier donc le nom contient blacklist>
|
||||
# Le second fichier contient les IP des machines supplémentaires à sortir.
|
||||
#
|
||||
# Format de sortie : Mois jour hh:mm:ss hostname nb_attques
|
||||
#
|
||||
# 02/2003 Frédéric Pauget
|
||||
|
||||
{ if (FILENAME~"blacklist") {
|
||||
if ($0=="") nextfile;
|
||||
tentatives[$0]=0;
|
||||
dern_tentative[$0]="Vieux 00 00:00:00"; }
|
||||
}
|
||||
|
||||
/.*Flood:IN=eth0.*/ {
|
||||
gsub("SRC=","",$9);
|
||||
tentatives[$9]++;
|
||||
dern_tentative[$9]=$1" "$2" "$3;
|
||||
}
|
||||
|
||||
END{
|
||||
for (machine in tentatives){
|
||||
system("echo "dern_tentative[machine]" $(host "machine" 2>/dev/null | awk '/^Name/ {print $2}') "tentatives[machine])
|
||||
}
|
||||
}
|
||||
|
|
@ -1,572 +0,0 @@
|
|||
#! /usr/bin/env python
|
||||
# -*- encoding: iso-8859-15 -*-
|
||||
|
||||
## (C) Samuel Krempp 2001
|
||||
## krempp@crans.ens-cachan.fr
|
||||
## Permission to copy, use, modify, sell and
|
||||
## distribute this software is granted provided this copyright notice appears
|
||||
## in all copies. This software is provided "as is" without express or implied
|
||||
## warranty, and with no claim as to its suitability for any purpose.
|
||||
|
||||
import os,sys,string,re,getopt,time
|
||||
import cPickle # load/dump python objects
|
||||
import socket
|
||||
|
||||
""" nacct.py : parse the logs+dump of net-acct, then print a summary of the last 24h
|
||||
|
||||
Usage : nacct.py [-N 20 ] : display the top-20
|
||||
[-c 1] : sort by the first column.
|
||||
[-n] : display numeric IP (instead of resolved hostnames)
|
||||
[-p nacct.pickle ] : where to put the persistence file
|
||||
[-f net-acct.log] [-f net.acct.log.0] [-u net-acct.dump]
|
||||
[-T <duree> = 24 ] : analyse data of the last <duree> hours
|
||||
[-T <duree2>= 2 ] : store data of the last <duree2> days.
|
||||
[-h host] : prints details for given host, from the *persistent* file only.
|
||||
[-t <date>=current time] : choose current time
|
||||
e.g. : nacct.py -h toto.crans.org -t '2002 12 31 23:59' -T 48
|
||||
will print details for toto on the 48 hours before given time.
|
||||
"""
|
||||
|
||||
|
||||
|
||||
def isExempt(exempts, src_ip, dst_ip) :
|
||||
is_exempt=0
|
||||
for r in exempts['dst'] :
|
||||
if r.search(dst_ip) :
|
||||
is_exempt = 1
|
||||
break
|
||||
if is_exempt ==0 :
|
||||
if exempts['src_dst'].has_key(src_ip) :
|
||||
tmp=exempts['src_dst'][src_ip]
|
||||
for r in tmp :
|
||||
if r.search(dst_ip) :
|
||||
is_exempt=1
|
||||
break
|
||||
return is_exempt
|
||||
|
||||
|
||||
def parseInputUntil ( f, prevline, conns_DB, exempts, end_time) :
|
||||
""" reads lines of the file f _until_ the timestamp is >= end_time
|
||||
data structure :
|
||||
. exempts [ src ] [ dst ] : if exists, count this traffic separately ('exempted' bytes)
|
||||
. conns_DB [ IP ] = [ PURE_upload_bytes, upload_bytes, download_bytes # normal bytes
|
||||
, gPUL, gUL, gDL ] # 'exempted' bytes
|
||||
(i.e. there are 6 counters, 3 for normal bytes, 3 for exempted bytes)
|
||||
|
||||
optionnally, prev_line is a line to be parsed before processing the file
|
||||
(used because we read next line's timestamps)
|
||||
Returns : (nextline, last_time, got_nothing)
|
||||
. nextLine : similar to prevLine
|
||||
. last_time : a timestamp such that : . all read timeStamps are <= last_time
|
||||
. all unread timeStamps are > last_time
|
||||
in practice, last_time is either the greatest read timeStamp, or (nextline's timestamp) - 1
|
||||
. got_nothing : true iff the file was completely empty.
|
||||
"""
|
||||
got_nothing = 1
|
||||
nextline = "" # in case a line needs to be parsed at next call..
|
||||
last_time = 0
|
||||
|
||||
t=0
|
||||
src_ip=""
|
||||
dst_ip=""
|
||||
size=0
|
||||
|
||||
# local variable aliases (optimising lookup..)
|
||||
lsplit = string.split; llong=long;
|
||||
lregLAN=regLAN
|
||||
end_time=repr(end_time)
|
||||
|
||||
(prev_stime, prev_proto, prev_src_ip, prev_src_port, prev_dst_ip, prev_dst_port, prev_size, pd)\
|
||||
= ["" ] * 8
|
||||
prev_is_symmetric = 1
|
||||
prev_m_src = 0
|
||||
|
||||
lineN=0
|
||||
while(1) :
|
||||
if not prevline :
|
||||
line = f.readline()
|
||||
lineN += 1
|
||||
else :
|
||||
line = prevline
|
||||
prevline=""
|
||||
|
||||
if not line : break
|
||||
got_nothing = 0
|
||||
|
||||
(stime, proto, src_ip, src_port, dst_ip, dst_port, size, pd) = lsplit(line, '\t', 7)
|
||||
|
||||
if stime >= end_time :
|
||||
nextline=line
|
||||
# if a whole slice is absent in logs, we need to set last_time here :
|
||||
if last_time =="" : last_time = int(stime) - 1
|
||||
break
|
||||
else :
|
||||
last_time = stime
|
||||
|
||||
if 1 : # now really PARSE the line :
|
||||
try:
|
||||
size=llong(size)
|
||||
except ValueError:
|
||||
raise ValueError("INCORRECT size \"%s\" at line %d : %s " % (size, lineN, line) )
|
||||
|
||||
# Upload :
|
||||
is_exempt=0
|
||||
if isExempt(exempts, src_ip, dst_ip) :
|
||||
is_exempt = 3
|
||||
|
||||
try:
|
||||
conns_DB[src_ip ][is_exempt +1] += size
|
||||
except KeyError:
|
||||
conns_DB[src_ip ] = [long(0)]*6
|
||||
conns_DB[src_ip ][is_exempt +1] = long(size)
|
||||
|
||||
# PURE Upload :
|
||||
is_symmetric = ( prev_src_ip == dst_ip and prev_src_port== dst_port and \
|
||||
prev_dst_ip == src_ip and prev_dst_port== src_port and \
|
||||
prev_stime == stime and prev_proto==proto )
|
||||
if is_symmetric :
|
||||
try :
|
||||
if prev_size > size :
|
||||
conns_DB[prev_src_ip ][ prev_is_exempt + 0] += prev_size
|
||||
else:
|
||||
conns_DB[src_ip ][ is_exempt +0] += size
|
||||
except KeyError:
|
||||
print "proto=%s %s, src_ip=%s %s" % (prev_proto, proto, prev_src_ip, src_ip)
|
||||
else :
|
||||
if prev_is_symmetric == 0 :
|
||||
# previous line has no symetrical transfer, assume PURE upload
|
||||
conns_DB[prev_src_ip ][ prev_is_exempt + 0] += prev_size
|
||||
# Download :
|
||||
#m=lregLAN.search(dst_ip)
|
||||
if 1:
|
||||
dst_is_exempt=0
|
||||
if isExempt(exempts, dst_ip, src_ip) :
|
||||
dst_is_exempt = 3
|
||||
try:
|
||||
conns_DB[dst_ip ][dst_is_exempt +2] += size
|
||||
except KeyError:
|
||||
conns_DB[dst_ip ] = [long(0)]*6
|
||||
conns_DB[dst_ip ][dst_is_exempt +2] = long(size)
|
||||
|
||||
(prev_stime, prev_proto, prev_src_ip, prev_src_port) = (stime, proto, src_ip, src_port)
|
||||
(prev_dst_ip, prev_dst_port, prev_size) = (dst_ip, dst_port, size)
|
||||
(prev_is_exempt, prev_is_symmetric) = (is_exempt, is_symmetric)
|
||||
|
||||
return (nextline, int(last_time), got_nothing)
|
||||
|
||||
def readSlices(inFile, db, exempts, slice0) :
|
||||
"""Loop on time slices, and parse the file step by step"""
|
||||
prevLine=""; last_time=0
|
||||
slice= slice0
|
||||
while 1 : # loop on time_slice
|
||||
end_time = (slice+1) * timeStep
|
||||
u=db[slice]
|
||||
(prevLine, lTime, got_nothing) = parseInputUntil(inFile, prevLine, db [slice], exempts, end_time)
|
||||
if got_nothing :
|
||||
break
|
||||
|
||||
if lTime != 0 : last_time = lTime
|
||||
|
||||
slice = max ( 1+slice, last_time / timeStep)
|
||||
|
||||
if not db.has_key(slice) :
|
||||
db[slice]={}
|
||||
|
||||
return (last_time)
|
||||
|
||||
def readFile(file_info, db, exempts ) :
|
||||
""" reads -completely, partially, or not at all- a list of rotated files.
|
||||
1/ find the file in the list that is the first that contains new data
|
||||
2/ seek the position where we stopped and read the file, and the newer ones.
|
||||
|
||||
file_info fields used here :
|
||||
['fnames'] : list of the rotated-files for one log, e.g. ['net-acct.log', 'net-acct.log.0']
|
||||
must be in anti-chronological order (else the script aborts)
|
||||
['prev_pos'] : offset-position pointig where we stopped reading at previous call
|
||||
(because of log-rotates, we have to guess for which file this offset is..)
|
||||
['last_time'] : timestamp of the last read entry of this log
|
||||
used to guess which file was opened previously, and which are new.
|
||||
|
||||
|
||||
"""
|
||||
if debug :
|
||||
print "VeryBeg: lasttime = %d" % file_info.get('last_time', 777)
|
||||
|
||||
file_info.setdefault('last_time',0)
|
||||
# 1.
|
||||
# Where did we stop, on the previous execution ?
|
||||
# in the list of files, find which need update => [0, end_of_new[ :
|
||||
times = [0]*len(file_info['fnames'])
|
||||
min_time=0
|
||||
i=-1
|
||||
for name in file_info['fnames'] :
|
||||
i += 1
|
||||
try :
|
||||
inFile=open(name,"rb")
|
||||
s = inFile.readline()
|
||||
inFile.close()
|
||||
except IOError :
|
||||
continue
|
||||
if not s :
|
||||
continue
|
||||
t = int( string.split(s, '\t')[0] )
|
||||
assert t > 1
|
||||
if min_time != 0 : assert t <= min_time
|
||||
min_time = t
|
||||
times[i] = t
|
||||
|
||||
end_of_new=0
|
||||
if file_info['last_time']==0 : # first time we read those files
|
||||
file_info['last_time'] = min_time-1
|
||||
end_of_new = len(times)
|
||||
else : # we have archives about those files, see which files are new/updated
|
||||
for t in times :
|
||||
end_of_new += 1
|
||||
if t <= file_info['last_time'] :
|
||||
break # the ones before are old ones. this is last updated one.
|
||||
|
||||
FileNames=file_info['fnames'][0:end_of_new]
|
||||
|
||||
if debug :
|
||||
print "first data at %s(%d), fileTimes= %s" % \
|
||||
(time.asctime(time.localtime(file_info['last_time'])),
|
||||
file_info['last_time'], times)
|
||||
print "We need to read/update %s" % (FileNames)
|
||||
|
||||
if file_info['last_time'] < min_time :
|
||||
file_info['prev_pos'] = 0
|
||||
if file_info.get('reset_if_new', 0) :
|
||||
# erase counters, they are no longer wanted.
|
||||
for k in db.keys() :
|
||||
del db[k]
|
||||
|
||||
slice0= file_info['last_time'] / timeStep
|
||||
|
||||
# 2.
|
||||
# everything's ready, loop on files, and parse them.
|
||||
FileNames.reverse() # start with the oldest
|
||||
times=times[0:end_of_new]
|
||||
Files_and_pos= zip( FileNames, [file_info['prev_pos']] + [0]*(end_of_new-1) )
|
||||
last_time=0; last_pos =0
|
||||
i=len(FileNames)
|
||||
for (fname, pos) in Files_and_pos :
|
||||
i -= 1
|
||||
if debug :
|
||||
print " read %s => Seek to pos %d" % (fname, pos )
|
||||
|
||||
try: inFile = open(fname, "rb")
|
||||
except IOError:
|
||||
continue
|
||||
inFile.seek(pos)
|
||||
|
||||
db.setdefault(slice0, {} )
|
||||
last_time = readSlices(inFile, db, exempts, slice0)
|
||||
if last_time != 0 : # we advanced in this file.
|
||||
slice0= last_time / timeStep
|
||||
elif i>= 1 : # guess an adequate slice0 to start with for next file :
|
||||
slice0= times[i-1]/timeStep
|
||||
last_pos = inFile.tell()
|
||||
assert last_pos >= pos
|
||||
inFile.close()
|
||||
|
||||
# 3.
|
||||
# Update file_info variables :
|
||||
if 1:
|
||||
if last_time != 0 :
|
||||
assert file_info.get('last_time', 0) <= last_time
|
||||
file_info['last_time'] = last_time
|
||||
if last_pos > 0 :
|
||||
file_info['prev_pos'] = last_pos
|
||||
|
||||
if debug and file_info.has_key('last_time') :
|
||||
print "VeryLast: lasttime = %d" % file_info['last_time']
|
||||
|
||||
|
||||
def loadPersist() :
|
||||
data = {}
|
||||
try:
|
||||
data = cPickle.load( open(pickleName, "rb") )
|
||||
except IOError:
|
||||
print "[can not load persistent data. Will need to read all the log-file.]"
|
||||
return data
|
||||
|
||||
def updateData() :
|
||||
""" structure of data :
|
||||
data['counts'] : the actual counters, split in separate databases :
|
||||
['dump'] : for bytes read in the dump
|
||||
['log'] : for bytes read in the log
|
||||
each is a 'conns_DB', that holds one database per timeslice :
|
||||
[<slice>] [IP] : 6-uple (see parseInputUntil)
|
||||
data['files']
|
||||
['ledump'] : is the file_info for the dump files.
|
||||
['lelog' ] : is the file_info for the regular log files
|
||||
each 'file_info' DB has following keys :
|
||||
'fnames', 'prev_pos', 'last_time' (see readFile)
|
||||
'dbName' (the corresponding key into data['counts'])
|
||||
'reset_if_new' (optionnal, designed for the dump file)
|
||||
"""
|
||||
data = loadPersist()
|
||||
|
||||
try:
|
||||
exempts = cPickle.load( open(pickleExemptsName, "rb") )
|
||||
except IOError:
|
||||
print "[can not load exmpts data. assuming no exempt]"
|
||||
exempts = { 'dst' : [], 'src_dst' : {} }
|
||||
|
||||
# initialise each database if needed :
|
||||
for k in ['files', 'counts' ]:
|
||||
data.setdefault(k, {} )
|
||||
Files=data['files']
|
||||
Files.setdefault('ledump', { 'dbName':'dump', 'fnames': dumpFNames, 'reset_if_new':1 })
|
||||
Files.setdefault('lelog', {'dbName':'log', 'fnames': logFNames } )
|
||||
|
||||
# overwrite the filenames stored in pickle with those from the command-line.
|
||||
Files['ledump'] ['fnames'] = dumpFNames
|
||||
Files['lelog'] ['fnames'] = logFNames
|
||||
|
||||
|
||||
for k in Files.keys():
|
||||
data['counts'].setdefault(Files[k]['dbName'], {} )
|
||||
|
||||
for key in data['files'].keys() :
|
||||
file_info = data['files'][key]
|
||||
if debug:
|
||||
print "file_info : %s " % file_info
|
||||
print "Parsing %s into data['counts'][ %s ]" % ( file_info['fnames'], file_info['dbName'])
|
||||
readFile( file_info, data['counts'] [file_info['dbName'] ], exempts )
|
||||
|
||||
return data
|
||||
|
||||
|
||||
def printCounters(counts, mkHeaders=0) :
|
||||
unit = 1e3
|
||||
if megas : unit = 1e6
|
||||
if mkHeaders :
|
||||
return "%9s|%9s|%9s | %10s|%9s|%9s" % ('Pure UL ', 'Upload ', 'Download',
|
||||
'Exempt PUL', 'Exempt U', 'Exempt D' )
|
||||
|
||||
s="%9.3f|%9.3f|%9.3f | %9.3f|%9.3f|%9.3f" % (counts[0]/(unit), counts[1]/(unit), counts[2]/(unit),
|
||||
counts[3]/unit, counts[4]/unit, counts[5]/unit)
|
||||
return s
|
||||
|
||||
|
||||
def bilan(DB, dbNames, duree, cur_time, disp_all = 0) :
|
||||
slice0=int( (cur_time-duree) / timeStep )
|
||||
by_host={}
|
||||
Nslices = {}
|
||||
for db_key in dbNames :
|
||||
Nslices[db_key] = 0
|
||||
for slice in DB[db_key].keys() :
|
||||
if slice >= slice0 :
|
||||
Nslices[db_key] += 1
|
||||
for host in DB[db_key][slice].keys() :
|
||||
if disp_all or regLAN.search(host):
|
||||
counts=DB[db_key][slice][host]
|
||||
cur = by_host.setdefault(host, [long(0)] *len(counts) + [host] )
|
||||
for i in range(len(counts)):
|
||||
cur[i] += counts[i]
|
||||
liste=by_host.values()
|
||||
liste.sort( lambda x, y: -cmp(x[sort_column], y[sort_column] )) # tri décroissant sur le N° champ
|
||||
print " %5.1f h stats since %s. %d hour-slices found " % (duree/3600.0,
|
||||
time.asctime(time.localtime(slice0*timeStep)),
|
||||
max(Nslices.values()) )
|
||||
print printCounters(0, 1) + " | HOST"
|
||||
print "="*77
|
||||
for l in liste[0:top10_length] :
|
||||
# Test si le DNS de la machine existe (donc si la machine est inscrite au crans)
|
||||
try:
|
||||
host = socket.gethostbyaddr( l[-1] ) [0]
|
||||
bad = 0
|
||||
except socket.error :
|
||||
host = l[-1]
|
||||
bad = 1
|
||||
|
||||
if not resolve_names :
|
||||
# On veut l'IP
|
||||
host = l[-1]
|
||||
|
||||
if bad :
|
||||
host = "NoDNS_" + host
|
||||
|
||||
print printCounters(l)+ (" |%s" % host)
|
||||
|
||||
|
||||
def detail_bilan(DB, hostName, IP, duree, cur_time) :
|
||||
slice0 = int( (cur_time-duree) / timeStep )
|
||||
slice1 = slice0 + int( duree/timeStep)
|
||||
slicePrints={}
|
||||
Nslices = {}
|
||||
db_key = 'log'
|
||||
|
||||
Nslices[db_key] = 0
|
||||
for slice in range(slice0, slice1+1) :
|
||||
pref = time.strftime("%Hh%M", time.localtime(slice*timeStep) )
|
||||
str = " (No record of this time-slice at all)"
|
||||
if slice in DB[db_key].keys() :
|
||||
str = " (No activity for this host in this time-slice)"
|
||||
Nslices[db_key] += 1
|
||||
if IP in DB[db_key][slice].keys() :
|
||||
str = printCounters( DB[db_key][slice][IP])
|
||||
|
||||
slicePrints[slice] = "%s|%s" %(pref,str)
|
||||
|
||||
print "Comptes par tranches de %ds pour la machine %s" % (timeStep, hostName)
|
||||
print "début : %s" % (time.asctime(time.localtime( slice0 * timeStep) ) )
|
||||
print ("%5s|" % 'time') + printCounters(0,1)
|
||||
print "="*77
|
||||
for slice in range(slice0, slice1+1) :
|
||||
l=slicePrints[slice]
|
||||
print l
|
||||
print "Fin : %s" % (time.asctime(time.localtime( -1 + (slice1+1) * timeStep) ) )
|
||||
|
||||
|
||||
def main(cur_time) :
|
||||
data=updateData()
|
||||
bilan(data['counts'], ['log', 'dump'], duree, cur_time, disp_all)
|
||||
|
||||
# make persistent data as small as possible :
|
||||
del data['counts'][ data['files']['ledump']['dbName'] ]
|
||||
del data['files']['ledump']
|
||||
cur_t = time.time()
|
||||
del_slices=[]
|
||||
# -> get rid of old slices
|
||||
for slice in data['counts']['log'].keys() :
|
||||
if slice < (cur_t-sduree)/timeStep :
|
||||
del_slices.append(slice)
|
||||
for slice in del_slices :
|
||||
del data['counts']['log'][slice]
|
||||
|
||||
# get rid of useless extern hosts :
|
||||
|
||||
for slice in data['counts']['log'].keys() :
|
||||
d=data['counts']['log'][slice]
|
||||
del_hosts=[]
|
||||
for host in d.keys() :
|
||||
m= store_all or regLAN.search(host)
|
||||
# keep extern hosts that were used as big upload targets : download >= 1 Mo
|
||||
if not m and d[host][2]< 1e6 :
|
||||
del_hosts.append( host)
|
||||
for host in del_hosts :
|
||||
del d[host]
|
||||
|
||||
cPickle.dump(data, open(pickleName,"wb") )
|
||||
|
||||
|
||||
#################
|
||||
# global vars :
|
||||
#
|
||||
|
||||
timeStep=3600 # 1h slices
|
||||
#################
|
||||
|
||||
|
||||
|
||||
optlist, args = getopt.getopt(sys.argv[1:], "dkDsnc:p:f:h::u:L:N:T:t:")
|
||||
|
||||
lock_name = "/var/lock/nacct.py" # Fichier de lock
|
||||
store_all = 0 # if false, store only hosts matching regLAN
|
||||
disp_all = 0 # if false, display only .. ..
|
||||
sduree = 48*3600 # delete slices when they are that much old
|
||||
duree = 0 # display the stats over this period
|
||||
top10_length = 30
|
||||
sort_column= 0 # 0 : sort by PURE, 1 : by upload, 2: by download.. up to 6 (cf parseInputUntil)
|
||||
resolve_names = 1 # resolve hostnames
|
||||
logFNames= []
|
||||
dumpFNames=[]
|
||||
debug=0
|
||||
megas=1
|
||||
detail_host=""
|
||||
cur_time=time.time()
|
||||
network=""
|
||||
pickleName=""
|
||||
pickleExemptsName = ""
|
||||
|
||||
if os.path.isfile(lock_name) :
|
||||
# Ya le lock
|
||||
print "Lock existant (%s)" % lock_name
|
||||
fd = open(lock_name, "r")
|
||||
msg=fd.readlines()
|
||||
fd.close()
|
||||
pid=string.split(msg[0],'\n')[0]
|
||||
msg=string.strip(string.join(msg[1:], '') )
|
||||
q = os.system("ps -o pid,tty,user,etime,command " +pid)
|
||||
if q==256:
|
||||
print "PID lock no trouvé => delock"
|
||||
try :
|
||||
os.remove(lock_name)
|
||||
except :
|
||||
None
|
||||
else :
|
||||
print "Script lockant en activité, sortie"
|
||||
sys.exit(255)
|
||||
|
||||
#Locking
|
||||
lock_fd=open(lock_name, "w")
|
||||
lock_comment = "%s" % os.getpid()
|
||||
lock_fd.write(lock_comment)
|
||||
lock_fd.close()
|
||||
|
||||
for [key, val] in optlist :
|
||||
if key == '-f' :
|
||||
logFNames.append(val)
|
||||
if key == '-u' :
|
||||
dumpFNames.append(val)
|
||||
if key == '-d' :
|
||||
debug = 1
|
||||
if key == '-D' :
|
||||
disp_all = 1
|
||||
if key == '-L' :
|
||||
network = val
|
||||
if key == '-h' :
|
||||
detail_host = val
|
||||
if key == '-t' :
|
||||
cur_time = int( time.mktime(time.strptime(val,"%Y %m %d %H:%M")) )
|
||||
if key == '-N' :
|
||||
top10_length = int(val)
|
||||
if key == '-k' :
|
||||
megas = 0 # use kilos instead of Megs
|
||||
if key == '-p' :
|
||||
pickleName=val
|
||||
if key == '-s' :
|
||||
store_all = 1
|
||||
if key == '-n' :
|
||||
resolve_names = 0
|
||||
if key == '-T' :
|
||||
if duree == 0 :
|
||||
duree = int( float(val) * 3600 )
|
||||
else:
|
||||
sduree = int( float(val) * 3600 * 24 )
|
||||
if key == '-c' :
|
||||
sort_column = int(val) -1
|
||||
|
||||
if duree == 0:
|
||||
duree = 24*3600
|
||||
if not logFNames :
|
||||
logFNames = ["/var/log/net-acct/net-acct.log", "/var/log/net-acct/net-acct.log.0" ]
|
||||
if not dumpFNames :
|
||||
dumpFNames = ["/var/log/net-acct/dump" ]
|
||||
if not network :
|
||||
network = "^138\.231\.1((3[6-9]|4[0-9]|50|51).*)$"
|
||||
regLAN=re.compile(network)
|
||||
if not pickleName :
|
||||
pickleName="/tmp/nacct.pickle"
|
||||
|
||||
if not pickleExemptsName :
|
||||
pickleExemptsName="/tmp/exempts.pickle"
|
||||
|
||||
|
||||
|
||||
# launch :
|
||||
if detail_host :
|
||||
data=loadPersist()
|
||||
IP = socket.gethostbyname( detail_host)
|
||||
detail_bilan(data['counts'], detail_host, IP, duree, cur_time)
|
||||
else :
|
||||
data = main(cur_time)
|
||||
|
||||
# Supression du lock
|
||||
try :
|
||||
os.remove(lock_name)
|
||||
except :
|
||||
None
|
||||
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
#!/usr/bin/awk -f
|
||||
#Lecture des logs du firewall pour retourner la liste des machines attaquant
|
||||
#sur le port 135 ou 6667
|
||||
#
|
||||
#Arguments :
|
||||
#<fichier(s) à scanner> <autre fichier donc le nom contient blacklist>
|
||||
# Le second fichier contient les IP des machines supplémentaires à sortir.
|
||||
#
|
||||
# Format de sortie : Mois jour hh:mm:ss hostname nb_attques
|
||||
#
|
||||
# 02/2003 Frédéric Pauget
|
||||
|
||||
{ if (FILENAME~"blacklist") {
|
||||
if ($0=="") nextfile;
|
||||
tentatives[$0]=0;
|
||||
dern_tentative[$0]="Vieux 00 00:00:00"; }
|
||||
}
|
||||
|
||||
/.*Virus:IN=eth0.*/{
|
||||
gsub("SRC=","",$9);
|
||||
tentatives[$9]++;
|
||||
dern_tentative[$9]=$1" "$2" "$3;
|
||||
}
|
||||
|
||||
END{
|
||||
for (machine in tentatives){
|
||||
system("echo "dern_tentative[machine]" $(host "machine" 2>/dev/null | awk '/^Name/ {print $2}') "tentatives[machine])
|
||||
}
|
||||
}
|
||||
|
|
@ -1,240 +0,0 @@
|
|||
#!/bin/sh
|
||||
#############################################################################
|
||||
## Script de déconexion/reconnexion automatique pour virus de type blaster ##
|
||||
## ##
|
||||
## Principe : ##
|
||||
## -> détection des attaques grâce aux logs du firewall ##
|
||||
## lecture par *_scan.awk ##
|
||||
## -> à partir du nombre d'attaques et de l'heure de dernière attaque ##
|
||||
## déconnecte ou reconnecte des machines ##
|
||||
## ##
|
||||
## Frédéric Pauget 02/2003 ##
|
||||
## 07/2004 adaptation pour scan de plusieurs types d'attaques ##
|
||||
#############################################################################
|
||||
|
||||
is_up() {
|
||||
# Supression de la machine dans la table arp
|
||||
/usr/sbin/arp -d $1 2> /dev/null
|
||||
|
||||
# Teste si la machine founie est up
|
||||
if fping -c1 $1 > /dev/null 2>&1 ; then
|
||||
# Elle a répondu au ping
|
||||
return 0
|
||||
fi
|
||||
if /usr/sbin/arp $1 2>/dev/null | egrep -q '(no entry|incomplete)' ; then
|
||||
# Elle n'est pas dans la table ARP
|
||||
return 1
|
||||
else
|
||||
# Elle est dans la table ARP
|
||||
return 0
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
if [[ $1 ]] && [[ $1 = "--real-run" ]]; then
|
||||
dry=false
|
||||
else
|
||||
dry=true
|
||||
fi
|
||||
|
||||
BLACKLIST_FINAL='/tmp/virus_blacklist'
|
||||
|
||||
# Logs du firewall
|
||||
FW_LOGS=/var/log/firewall/filtre.log
|
||||
|
||||
# Prétraitement logs
|
||||
tail -7200 $FW_LOGS > /tmp/fw_logs_light
|
||||
|
||||
# Fonction utile : retourne l'IP d'une machine
|
||||
ip() {
|
||||
echo $(host $1 2>/dev/null | awk '{print $3}')
|
||||
}
|
||||
|
||||
# Fonction principale
|
||||
scan() {
|
||||
# signification des arguments :
|
||||
# 1 : nombre d'attaques pour être considéré infecté
|
||||
# 2 : nombre de secondes sans attaques pour être considéré sain
|
||||
# 3 : script de scan
|
||||
# 4 : repertoire de stockage fichiers
|
||||
nb_att=$1
|
||||
nb_sec=$2
|
||||
SCRIPT=$3
|
||||
|
||||
# Liste des attaques
|
||||
INFECTES=$4/infectes
|
||||
# Machines décontaminées
|
||||
RECO=$4/reconectes
|
||||
|
||||
# Machines blacklistées
|
||||
BLACKLIST=$4/blacklist
|
||||
|
||||
# Fichiers temporaires supplémentaires
|
||||
DIFF=/tmp/virus_diff
|
||||
TMPFILE=/tmp/virus_scan
|
||||
|
||||
# Doit exister, même vides
|
||||
touch $RECO
|
||||
touch $BLACKLIST
|
||||
|
||||
if ! [[ -e $INFECTES ]]; then
|
||||
dry=true
|
||||
echo "dry-run mode forcé (fichier absent)"
|
||||
touch $INFECTES
|
||||
fi
|
||||
|
||||
# Test préliminaire
|
||||
if [[ ! -e $SCRIPT ]] ; then
|
||||
echo "Erreur : $SCRIPT non trouvé"
|
||||
exit 255
|
||||
fi
|
||||
|
||||
# Conversion blacklist hostname -> IPs
|
||||
if [[ "$(head -1 $BLACKLIST)" == "komaz" ]]; then
|
||||
echo "Ancienne blackliste vide"
|
||||
touch $BLACKLIST.ip
|
||||
else
|
||||
echo "Conversion blackliste..."
|
||||
for i in $(cat $BLACKLIST | sort | uniq)
|
||||
do
|
||||
ip $i
|
||||
done > $BLACKLIST.ip
|
||||
fi
|
||||
|
||||
echo "Détection des infectés..."
|
||||
$SCRIPT $BLACKLIST.ip /tmp/fw_logs_light > $TMPFILE
|
||||
# sort un fichier du type :
|
||||
# Mois Jour Heure hostname nb d'attaques depuis les dernier logrotate
|
||||
|
||||
echo "Traitement..."
|
||||
mv $INFECTES $INFECTES.old
|
||||
sort -r $TMPFILE > $INFECTES
|
||||
echo -n "" > $TMPFILE
|
||||
|
||||
# Différencee entre le fichier obtenu la au dernier lancement et le nouveau
|
||||
diff -U 1000 $INFECTES.old $INFECTES | egrep -v '\-\-\-|\+\+\+|@@' > $DIFF
|
||||
|
||||
if ! [[ -s $DIFF ]]; then
|
||||
echo "Aucun changement par rapport au dernier scan."
|
||||
cp $INFECTES $DIFF
|
||||
fi
|
||||
|
||||
# Traitement par host
|
||||
for host in $(awk '{print $4}' $DIFF | sort | uniq)
|
||||
do
|
||||
if grep -q "\+.* $host " $DIFF && grep -q "\-.* $host " $DIFF ; then
|
||||
# En + et - : variation
|
||||
nb=$(echo $(awk '$4=="'$host'" {print $5}' $INFECTES) - $(awk '$4=="'$host'" {print $5}' $INFECTES.old) | bc)
|
||||
echo -ne "Variation ($nb) "
|
||||
if grep -q "^$host$" $BLACKLIST ; then
|
||||
# Déja blacklisté, on remet
|
||||
echo -ne "\033[1;31m(RESTE) "
|
||||
echo $host >> $TMPFILE
|
||||
elif [[ $nb -gt $nb_att ]] ; then
|
||||
# Nouveau
|
||||
echo -ne "\033[1;31m(NOUVEAU) "
|
||||
echo $host >> $TMPFILE
|
||||
else
|
||||
# Pas assez de tentatives
|
||||
echo -n "(PASSE) "
|
||||
fi
|
||||
|
||||
|
||||
elif grep -q "\+.* $host " $DIFF ; then
|
||||
# Que en + donc c'est un nouveau
|
||||
nb=$(awk '$4=="'$host'" {print $5}' $INFECTES)
|
||||
if [[ $nb -gt $nb_att ]] ; then
|
||||
echo -ne "\033[1;31mNOUVEAU ($nb) "
|
||||
echo $host >> $TMPFILE
|
||||
else
|
||||
echo -ne "PASSE ($nb) "
|
||||
fi
|
||||
|
||||
elif grep -q "\-.* $host " $DIFF ; then
|
||||
# Que en -, c'est un coup de logrotate, on remet les blacklistés.
|
||||
if grep -q "^$host$" $BLACKLIST ; then
|
||||
echo "RESTE : $host"
|
||||
echo $host >> $TMPFILE
|
||||
else
|
||||
echo "Vieux : $host"
|
||||
fi
|
||||
|
||||
else
|
||||
# Pas de variation
|
||||
if grep -q "^$host$" $BLACKLIST ; then
|
||||
echo -n "Pas de variation "
|
||||
# UP or not ?
|
||||
if is_up $host ; then
|
||||
# UP
|
||||
last=$(date -d "$(awk '$4=="'$host'" {print $1" "$2" "$3}' $INFECTES)" +%s 2>/dev/null)
|
||||
# Cas ou c'est vraiment trop vieux
|
||||
if [[ -z $last ]] ; then
|
||||
last=0
|
||||
fi
|
||||
now=$(date +%s)
|
||||
t=$(echo "$now-$last" | bc)
|
||||
if [[ $t -gt $nb_sec ]] ; then
|
||||
# Reconexions automatique
|
||||
echo -n " reconnexion"
|
||||
echo $host >> $RECO
|
||||
else
|
||||
echo $host >> $TMPFILE
|
||||
fi
|
||||
|
||||
else
|
||||
# Down
|
||||
echo -ne "\033[1;41m(NO_PING)"
|
||||
echo $host >> $TMPFILE
|
||||
fi
|
||||
|
||||
echo -ne "\033[0m : "
|
||||
else
|
||||
echo -n "Reste connecté "
|
||||
fi
|
||||
fi
|
||||
echo -ne "\033[0m"
|
||||
awk '$4=="'$host'" {print $1" "$2" "$3" "$4}' $INFECTES
|
||||
done
|
||||
|
||||
# Opérations finales
|
||||
sort $TMPFILE > $BLACKLIST
|
||||
}
|
||||
|
||||
#######################################################################
|
||||
|
||||
# Scan des attaques sur le 135 :
|
||||
# 10 tentatives pour être considéré infecté
|
||||
# 1h sans attaque pour être considéré désinfecté
|
||||
echo -e "\033[1;33m###############################\nScan attaques port 135 ou 6667\033[1;0m"
|
||||
scan 10 3600 /usr/scripts/analyse_komaz/rpc_scan.awk /var/tmp/rpc
|
||||
|
||||
# Scan des floods :
|
||||
# 100 tentatives pour être considéré infecté
|
||||
# 1h sans attaque pour être considéré désinfecté
|
||||
echo -e "\033[1;33m###############################\nScan floods\033[1;0m"
|
||||
scan 100 3600 /usr/scripts/analyse_komaz/flood_scan.awk /var/tmp/flood
|
||||
|
||||
# Constitution de la blackliste finale
|
||||
cat /var/tmp/rpc/blacklist /var/tmp/flood/blacklist | sort | uniq > $BLACKLIST_FINAL.new
|
||||
|
||||
if ! [[ -s $BLACKLIST_FINAL.new ]]; then
|
||||
# Il n'y a personne, il faut au moins une machine sinon squid aime pas.
|
||||
echo 'komaz' > $BLACKLIST_FINAL.new
|
||||
fi
|
||||
|
||||
if ! $dry ; then
|
||||
if diff -q $BLACKLIST_FINAL $BLACKLIST_FINAL.new ; then
|
||||
echo "Pas de changement dans la blackliste"
|
||||
else
|
||||
# Synchro blacklist
|
||||
/usr/bin/rsync -C -a -e "ssh -i /usr/scripts/analyse_komaz/keys/synchro_virus" $BLACKLIST_FINAL.new root@sila.crans.org:/etc/squid/blacklist_infectes
|
||||
# Reload de squid
|
||||
/usr/bin/ssh -o StrictHostKeyChecking=no -i /usr/scripts/analyse_komaz/keys/reload_squid root@sila.crans.org squid reload
|
||||
fi
|
||||
else
|
||||
echo "Dry mode : blackliste non copiée sur sila et squid non relancé"
|
||||
echo "Utiliser l'option --real-run pour tout faire."
|
||||
fi
|
||||
|
||||
# On ne garde que la dernière version de la blacklist
|
||||
mv $BLACKLIST_FINAL.new $BLACKLIST_FINAL
|
||||
Loading…
Add table
Add a link
Reference in a new issue