ZyXEL ADSL Prestige 2602R-61 VoIP 91-006-024004B Manual Do Utilizador

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91-006-024004B
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Prestige 2602R Series User’s Guide
Chapter 13 Firewall Configuration
169
Maximum 
Incomplete High
This is the number of existing half-open 
sessions that causes the firewall to start 
deleting half-open sessions. When the 
number of existing half-open sessions rises 
above this number, the Prestige deletes half-
open sessions as required to accommodate 
new connection requests. Do not set 
Maximum Incomplete High to lower than the 
current Maximum Incomplete Low number.
100 existing half-open sessions. 
The above values causes the 
Prestige to start deleting half-open 
sessions when the number of 
existing half-open sessions rises 
above 100, and to stop deleting 
half-open sessions with the 
number of existing half-open 
sessions drops below 80.
TCP Maximum 
Incomplete 
This is the number of existing half-open TCP 
sessions with the same destination host IP 
address that causes the firewall to start 
dropping half-open sessions to that same 
destination host IP address. Enter a number 
between 1 and 256. As a general rule, you 
should choose a smaller number for a smaller 
network, a slower system or limited 
bandwidth.
30 existing half-open TCP 
sessions.
Action taken when 
the TCP Maximum 
Incomplete 
threshold is 
reached.
Delete the oldest 
half open session 
when new 
connection 
request comes
Select this radio button to clear the oldest half 
open session when a new connection request 
comes.
Deny new 
connection 
request for
Select this radio button and specify for how 
long the Prestige should block new 
connection requests when TCP Maximum 
Incomplete is reached. 
Enter the length of blocking time in minutes 
(between 1 and 255).
Back
Click Back to return to the previous screen. 
Apply
Click Apply to save your changes back to the Prestige.
Cancel
Click Cancel to begin configuring this screen afresh.
Table 49   Firewall: Threshold (continued)
LABEL
DESCRIPTION
DEFAULT VALUES