> For the complete documentation index, see [llms.txt](https://tmediadocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tmediadocs.telcobridges.com/other-pages/system-settings-session-border-gateway-and-acls/create-session-border-gateway-access-control-list-acl-filters.md).

# Create Session Border Gateway Access Control List (ACL) Filters

> **Applies to:** SBC 3.1, 3.3

To customize the actions of a firewall rule, you can add a filter to the rule.

1-Click **ACL** in the navigation panel.

![ACL 0](https://docs.telcobridges.com/w/images/9/90/ACL_0.png)

2-Select a firewall rule.

![Sbc Filter 0](https://docs.telcobridges.com/w/images/8/82/Sbc_Filter_0.png)

3-To define what the rule will do, click **Create New Filter**.

**Note:** The **Create New Filter** option is available when you create a new Firewall rule and have not yet created a filter. Otherwise, you can select the existing filter to edit it.

![Sbc Rule 2a](https://docs.telcobridges.com/w/images/a/a2/Sbc_Rule_2a.png)

2-Enter values for the filter.

* Click **Create**

![Sbc Rule 3](https://docs.telcobridges.com/w/images/2/2b/Sbc_Rule_3.png)

**To change the priority of an access rule, use the arrow icons.**

* To increase the priority of an access rule, use either the double or single arrow ![Sbc Rule 6](https://docs.telcobridges.com/w/images/2/29/Sbc_Rule_6.png) to move the rule up by one position, or to the top of the list.
* To decrease the priority of an access rule, use either the double or single arrow ![Sbc Rule 7](https://docs.telcobridges.com/w/images/a/ac/Sbc_Rule_7.png) to move the rule down by one position, or to the bottom of the list.

**Position of sample rule before it is moved** ![Sbc Rule 4](https://docs.telcobridges.com/w/images/f/f1/Sbc_Rule_4.png)

**Position of sample rule after it is moved** ![Sbc Rule 5](https://docs.telcobridges.com/w/images/6/68/Sbc_Rule_5.png)

### List of Parameters

SBC Filter

* [Name](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/other#s)
* [IP Interface](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/security#s)
* [Protocol](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/m3ua#s)
* [Source IP](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Source Netmask](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Source Port](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Destination IP](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Destination Netmask](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Destination Port](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/ip-network#s)
* [Override Default Thresholds](https://tmediadocs.telcobridges.com/telecom-references/parameter-reference/other#s)


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