{{indexmenu_n>50}}

# Classify

The **classify** tab lets you configure filtering parameters in order to define types of traffic to include in which [Class](/glossary/q/qos_class).

## Overview

At the top of the page is a list of selectable classification groups.

When a particular group is selected, details about it is shown in the configuration section.

Adding a parameter will filter out traffic according to the parameters and assign it to the group.

^ Item ^ Description ^
| Target | [Group](/glossary/q/qos_group) to assign. |
| Protocol | Protocol affected (All / [UDP](/glossary/u/udp) / [TCP](/glossary/t/tcp) / [ICMP](/glossary/i/icmp)). |
| Source Host | (All / Specific host). |
| Destination Host | (All / Specific host). |
| Ports | Included [ports](/glossary/p/port) anywhere . |
| Source Ports | Included [ports](/glossary/p/port) in source. |
| Destination Ports | Included [ports](/glossary/p/port) in destination. |
| Port Range | Range of [ports](/glossary/p/port) anywhere. |
| Precedence | [Precedence](/glossary/p/precedence). |
| Packet Size | Size of [packets](/glossary/p/packet) to match. |
| Direction | (`Both` / `In` / `Out`) |
| Mark | Hexadecimal [mark code](/glossary/q/qos_mark) to att to the packets. (`0x000000`-`0xFFFFFF`) |
| Connbytes | [Connection Bytes](/glossary/c/connection_bytes) for when to start filtering. |
| TCP flags | [TCP Flags](/glossary/t/tcp_flags) to match. |



### Add Filter

To add a filter:

* Click the **Add** button

* Select **Classification group**

* Enter QoS values as needed.

* Click **Apply**


### Reorder

The filters are prioritized in order from top to bottom in the list.

 You can rearrange the classes by using the buttons:

| {{/icon/up.png}} | Move up |
| {{/icon/down.png}} | Move down |