Prefix List
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.. image:: img/Routing-PrefixList.png
    :width: 100%
    :align: center
    :alt: Routing Prefix List

Prefix Lists are an advanced filtering mechanism based on IP Address Range.

They can be found at **Routing → Dynamic → Prefix List**.

Each Prefix List must have a unique name and a list of IP Addresses/Ranges.

They are ordered by the **Sequence** number.

**Action** can either be set to Permit or Deny. A mix of both is possible in a Prefix List.

**Minimum Mask** is for a range of IP Ranges to be filtered.
The prefix list will be applied if the prefix length is less than or equal to the *le* prefix length.
This number must be bigger than the Network Mask.

**Maximum Mask** is for a range of IP Ranges to be filtered.
The prefix list will be applied if the prefix length is greater than or equal to the *ge* prefix length.
This number must be smaller than the Network Mask.

A Prefix List without the **Minimum Mask** or **Maximum Mask** is the same as an :ref:`Access List`.