49
z
Max Half open TCP Connection: Set the percentage of
concurrent IP sessions that can be in the half-open state.
In ordinary TCP communication, packets are in the
half-open state only briefly as a connection is being
initiated; the state changes to active when packets are
being exchanged, or closed when the exchange is
complete. TCP connections in the half-open state can use
up the available IP sessions. If the percentage is exceeded,
then the half-open sessions will be closed and replaced
with new sessions as they are initiated.
z
Max ICMP Connection: Set the percentage of concurrent
IP sessions that can be used for ICMP messages. If the
percentage is exceeded, then older ICMP IP sessions will
be replaced by new sessions as they are initiated.
z
Max Single Host Connection: Set the percentage of
concurrent IP session that can originate from a single
computer. This percentage should take into account the
number of hosts on the LAN.
III.
Save
z
Click the Submit button to save the settings in the RAM.
z
To save these configuration changes permanently, enter
the Save & Reboot page, select Save and click Submit
button to save new settings.
4.12.2 Managing the Blacklist
If data packets are received that violate the firewall settings or
any of the IP Filter rules, then the source IP address of the offending
packets can be blocked from such accesses for a specified period of
time. The source computer remains on the black list for the period of
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