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Monitoring
On peut surveiller :
l'état physique d'une machine : température, disques (S.M.A.R.T. )
la charge d'une machine : nombre d'utilisateur, de requêtes, la CPU, débit réseau ...
disponibilité applicative : présence de processus et leur réponse par exemple
les messages inscrits en logs systèmes (Event-Viewer) concernant une application ou un composant système
les performances du réseau : débit, latence, taux d'erreur, QoS ...
la nature des protocoles d'un réseau et leur taux relatif : UDP, TCP, ICMP, idem pour la couche 4 ...
les attaques connues sur un Pare-feu par exemple
les réponses protocolaires (simulation partielle d'une session)
les modifications, suivant le but de la surveillance et dans certain cas, sont souhaitables ou au contraire signalent une anomalie.
la qualité du travail lors de montage audio/vidéo sur des périphériques professionnel