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SI2000 Callisto821+ Router Users Guide 

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figure 83: The Add Trigger page. 

 

2.  Configure the trigger as follows: 

•  Transport Type; select a transport type from the drop-down list, depending on whether you 

are adding a trigger for a TCP or a UDP application. 

•  Port Number Start; type the start of the trigger port range that the primary session uses. 

•  Port Number End; type the end of the trigger port range that the primary session uses. 

•  Secondary Port Number Start; type the start of the trigger port range that the secondary 

session uses. 

•  Secondary Port Number End; type the end of the trigger port range that the secondary 

session uses. 

•  Allow Multiple Hosts; select allow  if you want a secondary session to be initiated to/from 

different remote hosts. Select block  if you want a secondary session to be initiated only 
to/from the same remote host. 

•  Max Activity Interval; type the maximum interval time (in milliseconds) between the use of 

secondary port sessions. 

•  Enable Session Chaining; select Allow  or  Block  depending on whether you want to allow 

multi-level TCP session chaining. 

•  Enable UDP Session Chaining; select Allow  or  Block  depending on whether you want to 

allow multi-level UDP and TCP session chaining. You must set Enable Session Chaining to 
Allow if you want this to work. 

•  Binary Address Replacement; select Allow or Block depending on whether you want to use 

binary address replacement on an existing trigger. 

•  Address Translation Type; specify what type of address replacement is set on a trigger. You 

must set Binary Address Replacement to Allow if you want this to work. 

3.  Once you have configured the trigger, click on Apply. The Firewall Trigger Configuration page is 

displayed, containing details of the trigger that you have just configured. 

4.  Each trigger displayed in the Firewall Trigger Configuration page has a Delete hyperlink assigned to 

it. To delete a trigger, click on this link, then at the confirmation page, click on the Delete button. The 
Firewall Trigger Configuration page is displayed and details of the deleted trigger have been 
removed. There are two hyperlinks on the page: