Install guide

Software Version 2.7.4 37
Software Version 2.7.4
C613-10444-00 REV A
Firewall: Automatic Teardown of Data
Connections
With this enhancement, the firewall can close a WAN link as soon as all TCP
connections are closed. This avoids the cost of unused dial-up links such as
ISDN links.
The firewall detects when TCP sessions are opened and closed. You can
configure triggers to activate when:
■ the first session opens, by specifying mode=start
■ the last TCP session closes, by specifying mode=end.
You can also see how many sessions are open.
Important This trigger only monitors TCP sessions, not UDP traffic or any
other traffic. Remember that the firewall may still be passing non-TCP traffic.
Modified Commands
create trigger
Syntax CREate TRIGger=trigger-id
FIREwall={ALL|DOSattack|FRAgattack|HOStscan|PORtscan|
SESSION|SMTPATTACK|SMUrfattack|SYNattack|TCPattack}
[MODE={STArt|END|BOTH}] [AFTer=hh:mm] [BEFore=hh:mm]
[{DAte=date|DAYs=day-list}] [NAMe=name]
[REPeat={Yes|No|ONCe|FORever|count}]
[SCript=filename...] [STAte={ENAbled|DIsabled}]
[TEST={YES|NO|ON|OFF|True|False}]
set trigger
Syntax SET TRIGger=trigger-id
FIREwall={ALL|DOSattack|FRAgattack|HOStscan|PORtscan|
SESSION|SMTPATTACK|SMUrfattack|SYNattack|TCPattack}
[MODE={STArt|END|BOTH}] [AFTer=hh:mm] [BEFore=hh:mm]
[{DAte=date|DAYs=day-list}] [NAMe=name]
[REPeat={Yes|No|ONCe|FORever|count}]
[TEST={YES|NO|ON|OFF|True|False}]