Avaya Business Secure Router 222 Configuration - Basics Manuel d'utilisateur Page 162

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 451
  • Table des matières
  • DEPANNAGE
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 161
162 Chapter 10 Firewalls
NN47922-500
Figure 49 Smurf attack
ICMP vulnerability
ICMP is an error reporting protocol that works in concert with IP. The following
ICMP types trigger an alert:
Illegal Commands (NetBIOS and SMTP)
The only legal NetBIOS commands are shown in Table 36 all others are illegal.
Table 35 ICMP commands that trigger alerts
5 REDIRECT
13 TIMESTAMP_REQUEST
14 TIMESTAMP_REPLY
17 ADDRESS_MASK_REQUEST
18 ADDRESS_MASK_REPLY
Table 36 Legal NetBIOS commands
MESSAGE:
REQUEST:
POSITIVE:
NEGATIVE:
RETARGET:
KEEPALIVE:
Vue de la page 161
1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 450 451

Commentaires sur ces manuels

Pas de commentaire