ZyXEL Communications P-2602HW-63C Guía de usuario descargar pdf (Pagina 223)

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Chapter 15 Firewall Configuration

P-2602H(W)(L)-DxA User’s Guide

223

Figure 132 Firewall: Threshold

The following table describes the labels in this screen.

Table 83 Firewall: Threshold

LABEL DESCRIPTION DEFAULT VALUES

Denial of Service

Thresholds

One Minute Low This is the rate of new half-open sessions

that causes the firewall to stop deleting half-

open sessions. The ZyXEL Device continues

to delete half-open sessions as necessary,

until the rate of new connection attempts

drops below this number.

80 existing half-open sessions.

One Minute High This is the rate of new half-open sessions

that causes the firewall to start deleting half-

open sessions. When the rate of new

connection attempts rises above this number,

the ZyXEL Device deletes half-open sessions

as required to accommodate new connection

attempts.

100 half-open sessions per

minute. The above numbers cause

the ZyXEL Device to start deleting

half-open sessions when more

than 100 session establishment

attempts have been detected in

the last minute, and to stop

deleting half-open sessions when

fewer than 80 session

establishment attempts have been

detected in the last minute.

Maximum

Incomplete Low

This is the number of existing half-open

sessions that causes the firewall to stop

deleting half-open sessions. The ZyXEL

Device continues to delete half-open

requests as necessary, until the number of

existing half-open sessions drops below this

number.

80 existing half-open sessions.

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