Cisco Cisco Firepower Management Center 4000

Optionally, you can customize the value of 

Var1

 in any set. In Custom Set 2 where 

Var1

 has not been 

customized, its value is 

192.168.1.0/24

. In Custom Set 1 the customized value 

192.168.2.0/24 

of 

Var1 

overrides the default value. Resetting a user-defined variable in the default set resets its default 

value to 

any

 in all sets.

It is important to note in this example that, if you do not update 

Var1

 in Custom Set 2, further 

customizing or resetting 

Var1

 in the default set consequently updates the current, default value of 

Var1

 

in Custom Set 2, thereby affecting any intrusion policy linked to the variable set.

Although not shown in the example, note that interactions between sets are the same for user-defined 
variables and default variables except that resetting a default variable in the default set resets it to the 
value configured by Cisco in the current rule update.

The next two examples illustrate variable set interactions when you add a user-defined variable to a 
custom set. When you save the new variable, you are prompted whether to use the configured value as 
the default value for other sets. In the following example, you elect to use the configured value.

Note that, except for the origin of 

Var1

 from Custom Set 1, this example is identical to the example above 

where you added 

Var1

 to the default set. Adding the customized value 

192.168.1.0/24

 for 

Var1

 to 

Custom Set 1 copies the value to the default set as a customized value with a default value of 

any

. 

Thereafter, 

Var1

 values and interactions are the same as if you had added 

Var1

 to the default set. As with 

the previous example, keep in mind that further customizing or resetting 

Var1

 in the default set 

consequently updates the current, default value of 

Var1

 in Custom Set 2, thereby affecting any intrusion 

policy linked to the variable set.