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Debian GNU/Linux Reference Guide
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8.6.29 Bases pour tester un r�seau

Installez les paquets netkit-ping, traceroute, dnsutils, ipchains (noyau 2.2) iptables (noyau 2.4), et net-tools, puis :

     $ ping yahoo.com            # teste la connexion Internet
     $ traceroute yahoo.com      # trace les paquets IP
     $ ifconfig                  # affiche la configuration de la machine
     $ route -n                  # affiche la configuration de routage
     $ dig [@dns-server.com] host.dom [{a|mx|any}] |less
           # affiche les enregistrements DNS de host.dom
           # sur dns-server.com pour un enregistrement {a|mx|any}
     $ ichains  -L -n |less      # affiche le filtre de paquets (noyau 2.2)
     $ iptables -L -n |less      # affiche le filtre de paquets (noyau 2.4)
     $ netstat -a                # recherche tous les ports ouverts
     $ netstat -l --inet         # recherche tous les ports en �coute
     $ netstat -ln --tcp         # recherche tous les ports tcp en �coute
                                   (affichage num�rique)

Debian GNU/Linux Reference Guide
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