h1. Mentiodns

Validation des DNS à partir d'une liste sur un unbound et un DNS grand FAI et comparaison des résultats ;)

h2. Noeud actifs

|. Nom |. Bloc |
| Dam64 | domain_names.com_sortedaf|
| Dam64 | domain_names.com_sortedag|
| Mezzanine | domain_names.com_sortedad |
| Millicent | domain_names.com_sortedab |
| Millicent | domain_names.com_sortedah |
| Sacha | domain_names.org_sortedaa |
| Sacha | domain_names.org_sortedab |
| Sacha | domain_names.org_sortedab |
| Sacha | domain_names.org_sortedac |
| Sacha | domain_names.org_sortedac |
| Taz | domain_names.com_sortedac |
| Taz | domain_names.com_sortedae |

h2. Mentio

Packages: curl dig python socat tmux unbound whois

#-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+-#

MENTIODNS : Check for lying DNS (France)¶

#--------------------------------------------#

Version 1.6 - conf file #¶

Version 1.5 - test Dig resolving¶

Version 1.4 - Socat SSL sending results #¶

Version 1.3 - tld optioN¶

Version 1.2 - Round robin on DNS_ISP_LIST¶

For each request¶

Version 1.1 - Allow resume on basename¶

Version 1.0 - Parallel process with DIG¶

#--------------------------------------------#

(c) Sacha at Aquilenet.fr part of FFDN.org¶

#--------------------------------------------#

This shity script intend to bruteforce the ISP lying DNS Servers to identify which one¶

is going on Ministry of Interior Blocking page and compare the IP result from your favorite DNS server¶

Use this script with the following parameters¶

$1 MODE: client server local¶

$2 File source: list of domain names whithout tld¶

$3 tld: com, org, ...¶

$4 count number (if none from zero or from count file based on file name)¶

If you relanch the script it will check if it has a counter for the given file to resume¶

Blacklisted sites in $BLACKLIST_LOG file¶

Diff ip from a domain name are in $DIFF_LOG¶

1st launch creating config file¶

Copy generated certificates:¶

FILENAME=mentio_ssl-server¶

openssl genrsa -out $FILENAME.key 1024¶

openssl req -new -key $FILENAME.key -x509 -days 3653 -out $FILENAME.crt¶

cat $FILENAME.key $FILENAME.crt >$FILENAME.pem¶

FILENAME=mentio_ssl-client¶

...¶

##########################################################
HOMEDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
MENTIOCONF="$HOMEDIR/mentio.conf"

Number of parallel requests thruw dig¶

parallel=10

Socat server¶

SERVER="taz.im:65522"
##########################################################

##########################################################

CHECK CONFIG¶

if [ ! -f $MENTIOCONF ]; then
echo "=================================================================="
echo "MENTIODNS"
echo "------------------------------------------------------------------"
echo "1st time configuring"
echo -n "IP UNBOUND ? "
read DNS_MY

echo 'HOMEDIR="'$HOMEDIR'"' > $MENTIOCONF
echo 'DNS_MY="'$DNS_MY'"' >> $MENTIOCONF
IP_PUB=curl ifconfig.io
ASN=whois -h whois.cymru.com $IP_PUB |cut -d' ' -f1|sed -n "2p"
DNS_LIST="$HOMEDIR/mentio-DNS_ISP_LIST"
DNS_ISP_LIST=grep $ASN $DNS_LIST|cut -d' ' -f3-
echo 'DNS_ISP_LIST="'$DNS_ISP_LIST'"' >> $MENTIOCONF
echo "------------------------------------------------------------------"
echo " CONFIGURATION FILE:"
echo " please check and relaunch"
echo "------------------------------------------------------------------"
cat $MENTIOCONF
echo "------------------------------------------------------------------"
exit 1
fi
##########################################################

##########################################################

PARAMETERS to execute the script¶

Mode Log export with socat "client" "server" "local"¶

MODE=$1

if [ $MODE == "server" ]; then
socat -v -u openssl-listen:65522,fork,reuseaddr,cert=mentio_ssl-server.pem,cafile=mentio_ssl-client.crt OPEN:$HOMEDIR/MENTIO-DNS_DIFF,creat,append
exit 1
fi
##########################################################

##########################################################

Check if commandline parameters are less than 3¶

if [ $# -lt 3 ]; then
echo "=================================================================="
echo "MENTIODNS"
echo "------------------------------------------------------------------"
echo "Missing Parameter, please enter:"
echo
echo "mentio-check client|server|local filename tld (count number)"
echo
exit 1
fi
##########################################################

##########################################################

Get parameters¶

From config file¶

source $MENTIOCONF

From command line¶

$2 DNS source file name¶

DNS_SOURCE=$2

$3 TLD name (com, org...)¶

tld=$3

line counter from the dns source file, nothing for auto-resuming¶

COUNT=$4

##########################################################

SOCAT¶

SENDSOCAT="socat stdio openssl-connect:$SERVER,verify=0,cert=$HOMEDIR/mentio_ssl-client.pem,cafile=$HOMEDIR/mentio_ssl-server.crt"
##########################################################

COLORS¶

RED='\e[31m'
GREEN='\e[32m'
YELLOW='\e[33m'
GRAY='\e[90m'
NC='\033[0m' # No Color
##########################################################

Various variables¶

DNS_SOURCE_BASENAME=basename $DNS_SOURCE
DIFF_LOG="$HOMEDIR/DNS_DIFF"
BLACKLIST_LOG="$HOMEDIR/DNS_BLACKLISTED"
lines=wc -l $DNS_SOURCE|awk -F " " '{print $1}'
countfile="$HOMEDIR/DNS_Count-$DNS_SOURCE_BASENAME"
dateus=date +%Y%m%d-%H%M%S
##########################################################

Dig parameters¶

DIG_FAST="+nodnssec +short +timeout=1 +tries=2"
DIG_SLOW="+nodnssec +short +timeout=5 +tries=3 "
##########################################################

##########################################################

Generate list for dig: round robin from dns list¶

Like (@DNS-server domain) x parallel¶

_check(){
i=0
url=""
while [ $i -lt $parallel ]
do
n=expr $count + $i
ISP_DNS=echo $DNS_ISP_LIST | xargs -n 1| sort -R | head -n 1
url="$url @$ISP_DNS awk -v n="${n}" 'NR==n {print;exit}' $DNS_SOURCE.$tld"
i=expr $i + 1
done
}
##########################################################

##########################################################

Counter: create one if not existing, use existing instead¶

if [ -z $COUNT ]; then
if [ -f $countfile ]; then
count=cat $countfile
else
count=0
echo $count > $countfile
fi
else count=$COUNT
echo $count > $countfile
fi
##########################################################

##########################################################

MAIN LOOP¶

while [ "$count" != "$lines" ]; do
echo $count > $countfile
_check
site="$url"
echo "-------------------------------------------------------------------------------"
echo "#$count $dateus SITE:$site"
if nomentio=dig @$DNS_MY $DIG_SLOW $site|sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4| tr '\r\n' ' ' && [ -z "$nomentio" ]; then
echo -e "$GRAY Unknown zone $site $NC"
fi
if mentio=dig $DIG_SLOW $site|sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4| tr '\r\n' ' ' && [ -z "$mentio" ]; then
echo -e "$GRAY Unknown zone $site $NC"
fi

if [ -n "$nomentio" ] && [ -n "$mentio" ]; then
if [ "$nomentio" != "$mentio" ]; then
for i in $site; do
if nomentio1=dig $DIG_FAST @$DNS_MY $i|sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4| tr '\r\n' ' ' && [ -z "$nomentio1" ]; then
echo -e "$GRAY Unknown zone $i $NC"
fi
ISP_DNS=echo $DNS_ISP_LIST | xargs -n 1| sort -R | head -n 1
if mentio1=dig $DIG_FAST @$ISP_DNS $i|sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4| tr '\r\n' ' ' && [ -z "$mentio1" ]; then
echo -e "$GRAY Unknown zone $i $NC"
fi
if [ "$nomentio1" != "$mentio1" ]; then
if $mentio1 == 90.85.* ; then
if [ $MODE == "client" ]; then
echo "!!! $dateus hostname SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1 $NC" | $SENDSOCAT
fi
echo -e "$RED !!! $dateus SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1 $NC"
echo "!!! $dateus SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1" >> $BLACKLIST_LOG
else
if [ $MODE == "client" ]; then
echo ">>> $dateus hostname SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1" | $SENDSOCAT
fi

echo -e "$YELLOW >>> SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1 $NC"
echo ">>> $dateus SITE:$i ISPDNS:$ISP_DNS REAL:$nomentio1 MENTIO:$mentio1" >> $DIFF_LOG
fi
fi
done
else
echo -e "$GREEN#$count SITE:$site $NC"
fi
fi

count=expr $count + $parallel

done
##########################################################

h2. Test (valide au 14/06/18)

dig +short shahamat1.com
90.85.16.52

h2. Liste de serveurs DNS FAI Français

h3. Free - ASN12322

212.27.40.240
212.27.40.241
212.27.40.244
212.27.40.245

h3. Bouygues - ASN5410

194.158.122.10
194.158.122.15

h3. SFR/Numericable - ASN5410

89.2.0.1
89.2.0.2

h3. SFR - ASN15557

109.0.66.10
109.0.66.20

h3. Orange - ASN3215

80.10.246.1
80.10.246.2
80.10.246.3
80.10.246.5
80.10.246.7
80.10.246.129
80.10.246.130
80.10.246.132
80.10.246.134
80.10.246.136
81.253.149.1
81.253.149.2
81.253.149.6
81.253.149.9
81.253.149.10

h3. OBS (ouverts)

194.2.0.20
194.2.0.50

h2. Vigies de la neutralité

https://ooni.torproject.org
https://respectmynet.eu

h2. Cadre légal

https://www.legifrance.gouv.fr/affichTexte.do?cidTexte=JORFTEXT000000801164&fastPos;=2&fastReqId;=606073666&categorieLien;=cid&oldAction;=rechTexte#LEGIARTI000029756525

le décret https://www.legifrance.gouv.fr/affichTexte.do;jsessionid=FE6BFDED672BF1E2EFC5CA70705CF26E.tplgfr21s_3?cidTexte=LEGITEXT000030315036&dateTexte;=20150305&categorieLien;=cid#LEGITEXT000030315036

https://www.legifrance.gouv.fr/affichTexte.do;jsessionid=FE6BFDED672BF1E2EFC5CA70705CF26E.tplgfr21s_3?cidTexte=JORFTEXT000030195477&dateTexte;=20180619

h2. Unbound

server:
verbosity: 1
interface: 127.0.0.1
do-ip4: yes
do-ip6: no
do-udp: yes
do-tcp: no
access-control: 127.0.0.0/8 allow
access-control: 0.0.0.0/0 refuse
logfile: /var/log/unbound
hide-identity: yes
hide-version: yes
harden-glue: yes
use-caps-for-id: yes
do-not-query-localhost: yes

h2. Ansible divers

Copy file:

ansible mentio -m copy -a "src=mentio-check6 dest=~/MENTIODNS/"

Copy file single host:

ansible mentio --limit dam -m copy -a "src=mentio-check6 dest=~/MENTIODNS/"

ansible-playbook /etc/ansible/playbooks/mentio.yml

• hosts: mentio sudo: no tasks:
  • name: copyfiles copy: src: "{{ item.src }}" dest: "{{ item.dest }}" with_items:
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio-check6',dest: '~/MENTIODNS/' }
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio-DNS_ISP_LIST',dest: '~/MENTIODNS/' }
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio_ssl-client.crt',dest: '~/MENTIODNS/' }
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio_ssl-client.key',dest: '~/MENTIODNS/' }
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio_ssl-client.pem',dest: '~/MENTIODNS/' }
    • { src: '/home/sacha/0nmyway/00_Aquilenet/FFDN/mentiodns.fr/mentio_ssl-server.crt',dest: '~/MENTIODNS/' }