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Prestige 652 Series User’s Guide
Firewall Configuration
12-5
Table 12-1 Attack Alert
LABEL DESCRIPTION
Maximum
Incomplete Low
This is the number of existing half-open sessions (default "80") that causes the
firewall to stop deleting half-open sessions.
The Prestige continues to delete half-open requests as necessary, until the number
of existing half-open sessions drops below this number.
Maximum
Incomplete High
This is the number of existing half-open sessions (default "100") 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. The Prestige stops deleting half-
open sessions when the number is less than the
Max Incomplete Low
.
Do not set
Maximum Incomplete High
to lower than the current
Max Incomplete
Low
number.
TCP Maximum
Incomplete
This is the number of existing half-open TCP sessions (default "10") 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.
Blocking Time When
TCP Maximum Incomplete
is reached you can choose if the next session
should be allowed or blocked. If you select
Blocking Time
, any new sessions will be
blocked for the length of time you specify in the next field
(min)
and all old
incomplete sessions will be cleared during this period.
If you want strong security, it is better to block the traffic for a short time, as it will give
the server some time to digest the loading.
(min) Type the length of
Blocking Time
in minutes (1-256). The default is "0".
Back
Click
Back
to return to the previous screen.
Apply
Click
Apply
to save your customized settings and exit this screen.
Cancel
Click
Cancel
to return to the previously saved settings.
Содержание Prestige 652
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Страница 433: ...XII Part XII Appendices and Index This part contains additional background information and an index or key terms...
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