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@bortzmeyer
bortzmeyer / zonemaster-ipv6.md
Created Sep 11, 2019
zonemaster.fr reachable over IPv6
View zonemaster-ipv6.md 
% blaeu-reach -r 100 --by_probe 2001:67c:2218:3::1:83
99 probes reported
Test #22786080 done at 2019-09-11T07:25:01Z
Tests: 98 successful probes (99.0 %), 1 failed (1.0 %), average RTT: 70 ms
@bortzmeyer
bortzmeyer / canary.md
Created Sep 10, 2019
RIPE Atlas probe and Mozilla canary domain for DNS censorship
View canary.md 
 % blaeu-resolve -r 1000 --type A use-application-dns.net 
[ERROR: NXDOMAIN] : 5 occurrences 
[185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153] : 990 occurrences 
Test #22775161 done at 2019-09-10T06:32:14Z
@bortzmeyer
bortzmeyer / gandi-face-cachee.md
Created Sep 6, 2019
Problème HTTP chez Gandi
View gandi-face-cachee.md 
% curl -v http://www.face-cachee-internet.fr
* Rebuilt URL to: http://www.face-cachee-internet.fr/
*   Trying 217.70.184.56...
* TCP_NODELAY set
* Connected to www.face-cachee-internet.fr (217.70.184.56) port 80 (#0)
> GET / HTTP/1.1
> Host: www.face-cachee-internet.fr
> User-Agent: curl/7.52.1
> Accept: */*
@bortzmeyer
bortzmeyer / syncthing.md
Last active Aug 29, 2019
Test de Syncthing
View syncthing.md

Syncthing https://syncthing.net/ est un outil de synchronisation de fichiers en pair-à-pair. J'ai testé avec deux machines, un PC Ubuntu et un ordiphone Android. Les machines se reconnaissent par leur "device ID", un condensat d'une clé cryptographique. Sur Android, on peut l'afficher avec "Afficher l'ID de l'appareil". Sur Ubuntu via l'interface Web "Show my ID". Pour accepter l'Android, j'ai utilisé la fonction qui affiche les ID des machines du même réseau local. Pour accepter le PC, j'ai utilisé le QR-code affiché dans l'interface Web. Installation sur Ubuntu : dans le magasin standard, donc apt-get install syncthing (ou bien le cliquodrome d'installation de logiciels). Aucune idée de ce qu'on doit faire après, je ne trouve pas la doc. Ah, si, le lien était discret : https://docs.syncthing.net/intro/getting-started.html On lance syncthing et il crée les clés puis vous redirige vers une interface Web Installation sur Android : via le Google Play Store. Il faut ensuite explicitement indiquer quels dossiers

@bortzmeyer
bortzmeyer / flexbalancer.md
Created Jul 31, 2019
Broken CDN DNS server
View flexbalancer.md

NXDOMAIN for an ENT (Empty Non-Terminal)

 dig @ns1.flexbalancer.net. A a7e454.flexbalancer.net 

; <<>> DiG 9.10.3-P4-Debian <<>> @ns1.flexbalancer.net. A a7e454.flexbalancer.net
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 627
@bortzmeyer
bortzmeyer / context.md
Created Jul 31, 2019
Firefox console for Context generator
View context.md 
<script> source URI is not allowed in this document: “https://browser.sentry-cdn.com/4.4.1/bundle.min.js”.
le-generateur-de-communiques-ministeriels.html:604
Loading failed for the <script> with source “https://www.googletagmanager.com/gtag/js?id=UA-15017861-10”.
index.html:4
ReferenceError: Sentry is not defined[Learn More]
le-generateur-de-communiques-ministeriels.html:606:5
Loading failed for the <script> with source “https://connect.facebook.net/en_US/fbevents.js”.
le-generateur-de-communiques-ministeriels.html:1
Loading failed for the <script> with source “https://snap.licdn.com/li.lms-analytics/insight.min.js”.
@bortzmeyer
bortzmeyer / arfinic-anycast.md
Created Jul 22, 2019
Afrinic anycast DNS server
View arfinic-anycast.md

Seen by the RIPE Atlas probes.

% blaeu-resolve -r 100 --nsid --nameserver 196.216.168.25 -q SOA tn
Nameserver 196.216.168.25
[NSID: b's04-ns2.jnb' ns1.ati.tn. hostmaster.ati.tn. 2019128869 21600 10800 604800 86400] : 49 occurrences 
[NSID: b's03-ns2.jnb' ns1.ati.tn. hostmaster.ati.tn. 2019128869 21600 10800 604800 86400] : 38 occurrences 
[TIMEOUT] : 6 occurrences 
[NSID: b's01-ns2.jinx' ns1.ati.tn. hostmaster.ati.tn. 2019128869 21600 10800 604800 86400] : 2 occurrences 
[NSID: b's01.ns2.tun' ns1.ati.tn. hostmaster.ati.tn. 2019128869 21600 10800 604800 86400] : 1 occurrences
@bortzmeyer
bortzmeyer / mine.md
Created Jun 18, 2019
Programme de minage pour l'école d'été de cybersécurité, cours Bitcoin
View mine.md 
#!/usr/bin/env python3

import random

def asciisum(s):
    result = 0
    for c in s:
        result += ord(c)
    return result
@bortzmeyer
bortzmeyer / cameroon.cm
Created May 23, 2019
Cameroon wrong delegation for com.cm
View cameroon.cm
```
% check-soa -i cm
auth02.ns.uu.net.
198.6.1.82: ERROR: SERVFAIL (112 ms)
benoue.camnet.cm.
195.24.208.2: OK: 2019052303 (118 ms)
kim.camnet.cm.
195.24.192.35: OK: 2019052303 (114 ms)
lom.camnet.cm.
195.24.192.34: OK: 2019052307 (114 ms)
@bortzmeyer
bortzmeyer / xml-xslt.md
Created Apr 19, 2019
Playing with XML
View xml-xslt.md 
% cat toto.xml
<?xml version="1.0" encoding="utf-8"?>
<p>foo <b>bar</b> : quz</p>

% cat convert.xsl
<?xml version='1.0' encoding="utf-8"?>
<!DOCTYPE stylesheet [
<!ENTITY newln "&#xA;">
]>
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