Voir la liste des ports ouverts sur Windows
Les ports sont utilisés pour pouvoir gérer plusieurs connexions sur un même ordinateur. On pourrait comparer les ports d'une interface réseau aux quais d'une gare.
Pour savoir quels sont les ports ouverts sur un windows, on peut utiliser cette ligne de commande (dans cmd.exe) :
netstat -ano
Vous obtiendrez alors la liste des ports utilisés, avec le pid du processus concerné sur la dernière colonne :
C:\Users\Vincent>netstat -ano Connexions actives Proto Adresse locale Adresse distante État TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 5100 TCP 0.0.0.0:135 0.0.0.0:0 LISTENING 768 TCP 0.0.0.0:49157 0.0.0.0:0 LISTENING 520 TCP 0.0.0.0:49160 0.0.0.0:0 LISTENING 3024 TCP 127.0.0.1:63098 127.0.0.1:63099 ESTABLISHED 5772 TCP 127.0.0.1:63099 127.0.0.1:63098 ESTABLISHED 5772 TCP 192.168.1.30:139 0.0.0.0:0 LISTENING 4 TCP 192.168.1.30:51385 198.252.206.25:80 ESTABLISHED 5772 TCP 192.168.1.30:51541 67.228.168.221:80 ESTABLISHED 5772 TCP 192.168.1.30:51710 193.104.215.61:80 CLOSE_WAIT 2460 TCP 192.168.72.1:139 0.0.0.0:0 LISTENING 4 TCP 192.168.241.1:139 0.0.0.0:0 LISTENING 4 TCP [::]:135 [::]:0 LISTENING 768 TCP [::]:49160 [::]:0 LISTENING 3024 UDP 0.0.0.0:500 *:* 1000 UDP 0.0.0.0:3702 *:* 972 UDP 0.0.0.0:3702 *:* 1800 UDP 0.0.0.0:64750 *:* 972 UDP 127.0.0.1:1900 *:* 1800 UDP 127.0.0.1:57592 *:* 1800 UDP 192.168.1.30:137 *:* 4 UDP 192.168.241.1:138 *:* 4 UDP 192.168.241.1:1900 *:* 1800 UDP 192.168.241.1:57590 *:* 1800
Pour connaître le nom du processus correspondant à un PID, utilisez le gestionnaire de tâches (Ctrl + Alt + Suppr), onglet Processus.
CurrPorts : un logiciel pour voir les ports ouverts
La ligne de commande c'est pas très pratique à utiliser, si vous ne souhaitez pas l'utiliser, vous pouvez télécharger un logiciel qui fait la même chose que la commande netstat, mais avec une interface graphique :
Télécharger Cports (Nirsoft)
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On peut même filtrer les résultats sur le protocole (TCP ou UDP), et en fonction du processus rattaché :
exclude:both:udp: exclure l'UDPexclude:process:System: exclure les processus du système d'exploitation
Allez donc jeter un oeil sur cette page : dessiner un gâteau.
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