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January 20 2014

17:29

Vous vous plaigniez que des étrangèr(e)s « volent » des emplois ?

Si des gens sans visa, parlant mal le français ou moins diplômé(e)s arrivent à décrocher un emploi,
c'est peut-être que le problème se situe chez vous. [Dans votre tête.]

(Via une image sur Twitter.)

December 26 2013

17:49

Un affichage minimum dans tcpdump

Pour afficher peu d'informations, on peut combiner les options -q (sortie rapide) et -t (non affichage d'un cachet ou référence temporelle en début de ligne).

Ainsi, la commande sudo tcpdump -i [interface] -q -t génère un rendu léger qui ne donne grosso-modo que les adresses IP et ports utilisés :

IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 0
IP 55.66.77.88.8945 > 12.34.56.78.46039: tcp 12
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 0
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 5031
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 0
IP6 ab90::247:c84f:fe5a:75c6 > ip6-allnodes: ICMP6, router advertisement, length 104
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 5031
IP 55.66.77.88.8945 > 12.34.56.78.46039: tcp 0
IP 55.66.77.88.8945 > 12.34.56.78.46039: tcp 381
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 0
IP 12.34.56.78.46039 > 55.66.77.88.8945: tcp 5031
IP 55.66.77.88.8945 > 12.34.56.78.46039: tcp 0
IP 97.86.75.64.https > 12.34.56.78.42610: tcp 5031
IP 55.66.77.88.8945 > 12.34.56.78.46039: tcp 0
IP 202.190.179.37.7671 > 12.34.56.78.www: tcp 0
IP 254.203.151.100.mysql > 12.34.56.78.55152: tcp 0
IP 254.203.151.100.mysql > 12.34.56.78.55152: tcp 0

Documentation officielle : https://www.tcpdump.org/tcpdump_man.html .

July 11 2011

20:15
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