Deleting A Rule; Cloning A Rule; Adding Or Editing A Rule - Dell SonicWall SRA 4200 Administrator's Manual

Example – Using String Length and URL Decode with Parameter Values:ID
Comparing against a decoded input allows the administrator to use the String Length
operation to check the length of the input against the matching variable. For example, if a Web
application ID parameter should not be more than four characters, the administrator could
select Parameter Values in the Variable field, enter ID in the selection field, click + to add the
variable and selected item to the rule, enter 4 in the Value field, select > in the Operator list,
and select both URL Decode and String Length in the Advanced Operations list.

Deleting a Rule

To delete a rule from a rule chain:
On the Web Application Firewall > Rules page, click the Edit Rule Chain icon
Step 1
Configure for the rule chain from which you want to delete a rule. The page for that rule chain
opens.
Click the Delete icon
Step 2
Click OK in the confirmation dialog box.
Step 3
Click Accept.
Step 4

Cloning a Rule

To clone a rule:
On the Web Application Firewall > Rules page, click the Edit Rule Chain icon
Step 1
Configure for the rule chain which contains the rule you want to clone. The page for that rule
chain opens.
Click the Clone icon
Step 2
Click OK in the confirmation dialog box.
Step 3
You can now edit the rule to customize it. See

Adding or Editing a Rule

To add or edit a rule in a rule chain, perform the following steps:
Click the Edit Rule Chain icon
Step 1
or edit a rule. The page for that rule chain opens.
Click the Add Rule button to add a new rule, or click the Edit icon under Configure for the rule
Step 2
you want to edit.
In the Add Rule page or the page for the edited rule, select a variable from the Variables drop-
Step 3
down list. See
If the chosen variable is a collection of variables, a selection field is displayed to the right of the
Step 4
Variables field, after the colon. If you wish to make a comparison against a particular member
of the collection, type the name of that item into the selection field.
To test the collection itself against an input, leave the selection field blank. For example, to test
whether a certain parameter exists in the request, you could select the Parameter Names
variable and then type the specific parameter name into the Value field (but not into the variable
selection field).
Click the Plus button
Step 5
more variables.
under Configure for the rule you want to delete.
under Configure for the rule you want to clone.
under Configure for the rule chain on which you want to add
"About Variables" on page 266
to add the variable to the rule. Repeat
"Adding or Editing a Rule" on page
for information about the available variables.
Step 2
Web Application Firewall Configuration | 273
under
under
273.
through Step 5 to add