String Groups Support

The
Avi Load Balancer
supports String Groups in addition to the match value pattern. The following topic explains the configuration of new String Groups for Argument Rules.
The String Group consists of the following parts:
  • String Group – UUID of the String Group containing the key used in the match element.
  • Key – PCRE-supported regular expression.
  1. Navigate to
    Templates
    WAF
    WAF Policy
    and click
    Positive Security
    tab.
  2. The option to use String Groups available under
    Match Elements
    , while creating a
    New Argument Rule
    , is shown below.
  3. For the
    String Group
    , select the default
    System-PSMGroup-Types
    from the drop-down menu or create a new String Group.
  4. For the default
    System-PSMGroup-Types
    , select one of the
    KEY NAMES
    as shown below. You can also edit the selected String Group:
  5. To create a new String Group, select
    create
    from the drop-down menu as shown below:
  6. Provide the
    Name
    , select
    Key & Value
    from the
    Type
    drop-down menu. Click
    Add
    . Enter a
    Key
    name and a PCRE-supported expression under the
    Value
    field, as shown below:
  7. Provide the name of the key created in the previous step as shown below.
The maximum number of String Groups that the
Avi Load Balancer
can support is 100. A String Group supports a maximum of 1000 key values.