Zyxel-communications P-661H Series Instrukcja Użytkownika Strona 150

  • Pobierz
  • Dodaj do moich podręczników
  • Drukuj
  • Strona
    / 383
  • Spis treści
  • BOOKMARKI
  • Oceniono. / 5. Na podstawie oceny klientów
Przeglądanie stron 149
P-661H/HW Series User’s Guide
150 Chapter 8 Firewalls
Figure 81 Smurf Attack
8.4.2.1 ICMP Vulnerability
ICMP is an error-reporting protocol that works in concert with IP. The following ICMP types
trigger an alert:
8.4.2.2 Illegal Commands (NetBIOS and SMTP)
The only legal NetBIOS commands are the following - all others are illegal.
All SMTP commands are illegal except for those displayed in the following tables.
Table 57 ICMP Commands That Trigger Alerts
5 REDIRECT
13 TIMESTAMP_REQUEST
14 TIMESTAMP_REPLY
17 ADDRESS_MASK_REQUEST
18 ADDRESS_MASK_REPLY
Table 58 Legal NetBIOS Commands
MESSAGE:
REQUEST:
POSITIVE:
VE:
RETARGET:
KEEPALIVE:
Table 59 Legal SMTP Commands
AUTH DATA EHLO ETRN EXPN HELO HELP MAIL NOOP
QUIT RCPT RSET SAML SEND SOML TURN VRFY
Przeglądanie stron 149
1 2 ... 145 146 147 148 149 150 151 152 153 154 155 ... 382 383

Komentarze do niniejszej Instrukcji

Brak uwag