Zyxel-communications 70 Series Manuale Utente Pagina 207

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
Vedere la pagina 206
ZyWALL 5/35/70 Series User’s Guide
207 Chapter 10 Firewalls
Figure 92 Smurf Attack
10.4.2.1 ICMP Vulnerability
ICMP is an error-reporting protocol that works in concert with IP. The following ICMP types
trigger an alert:
10.4.2.2 Illegal Commands (NetBIOS and SMTP)
The only legal NetBIOS commands are the following - all others are illegal.
Table 64 ICMP Commands That Trigger Alerts
5 REDIRECT
13 TIMESTAMP_REQUEST
14 TIMESTAMP_REPLY
17 ADDRESS_MASK_REQUEST
18 ADDRESS_MASK_REPLY
Table 65 Legal NetBIOS Commands
MESSAGE:
REQUEST:
POSITIVE:
NEGATIVE:
RETARGET:
KEEPALIVE:
Vedere la pagina 206
1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 806 807

Commenti su questo manuale

Nessun commento