ZyXEL Communications LTE7460-M608, Руководство пользователя

Страница: 69 / 124

Chapter 7 Networking
LTE7460-M608 User’s Guide
69
The following table describes the labels in this screen.
7.9 Firewall > ALG Screen
Click Networking > Firewall > ALG to open the ALG (Application Layer Gateway) screen. Use this screen
to add NAT (Network Address Translation) filters into your LTE7460-M608’s gateway to support packets
and sessions for certain application layer protocols.
Figure 54 Networking > Firewall > ALG
Table 22 Networking > Firewall > DoS Attack
LABEL DESCRIPTION
DoS Attack
Enable DoS Protection Enable this to protect against DoS attacks. The LTE7460-M608 will drop sessions that
surpass maximum thresholds.
SYN Flood This is the rate of new TCP half-open sessions per second that causes the firewall to
start deleting half-open sessions. When the rate of new connection attempts rises
above this number, the LTE7460-M608 deletes half-open sessions as required to
accommodate new connection attempts.
Echo Storm This is the rate of new Echo Request half-open sessions per second that causes the
firewall to start deleting half-open sessions. When the rate of new connection
attempts rises above this number, the LTE7460-M608 deletes half-open sessions as
required to accommodate new connection attempts.
ICMP Flood This is the rate of new ICMP Request (other than Echo) half-open sessions per second
that causes the firewall to start deleting half-open sessions. When the rate of new
connection attempts rises above this number, the LTE7460-M608 deletes half-open
sessions as required to accommodate new connection attempts.
Apply Click Apply to save your changes back to the LTE7460-M608.
Reset Click Reset to reload the previous configuration for this screen.