---
title: "Managing DHCP Filters"
canonical: "https://docs.infoblox.com/space/nios85/35418348/Managing%20DHCP%20Filters"
format: markdown
---
You can do the following to manage DHCP filters:

- Modify filter settings. For information, see *<span style="color: #0000ff">[Modifying](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[DHCP](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Filters](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*.
- View a complete list of filters, MAC address items, and match rules. For information, see *<span style="color: #0000ff">[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[DHCP](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Filters.](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*
- Delete filters that are not in use. For information, see *<span style="color: #0000ff">[Deleting](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Filters](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[.](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)

# > Macro (anchor)

> Macro (anchor)

Modifying DHCP Filters

To modify a filter:

1. From the **Data** **Management** tab, select the **DHCP** tab -> **Filters** tab -> *filter_name* checkbox, and then click the Edit icon.
2. For a MAC address filter, the *DHCP* *MAC* *Filter* editor provides the following tabs from which you can modify information:
  - **General**: Modify the fields as described in *<span style="color: #0000ff">[Defining](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[MAC](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[Address](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[Filters](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*.
  - **DHCP** **Options**: Add or delete DHCP options. For information, see *<span style="color: #0000ff">[Defining](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[MAC](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[Address](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)*<span style="color: #0000ff">[Filters](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2507)</span>*.
  - **Extensible** **Attributes**: Add or delete extensible attributes that are associated with a specific DHCP range. You can also modify the values of extensible attributes. For information, see *<span style="color: #0000ff">[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)*<span style="color: #0000ff">[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)*<span style="color: #0000ff">[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[.](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)
  - **Permissions**: This tab appears only if you belong to a superuser admin group. For information, see *<span style="color: #0000ff">[About](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35979376)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35979376)*<span style="color: #0000ff">[Administrative](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35979376)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35979376)*<span style="color: #0000ff">[Permissions](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35979376)</span>*.

For a relay agent filter, the *Relay* *Agent* *Filter* editor provides the following tabs from which you can modify information:

> Macro (legacy-content)

For an option filter<span style="color: #ff0000"> (IPv4/IPv6)</span>, the *Option* *Filter* editor contains the following tabs from which you can modify information:

> Macro (legacy-content)

For a DHCP fingerprint filter, the *Add* *IPv4* *Fingerprint* *Filter* editor provides the following tabs from which you can modify information:

> Macro (legacy-content)

For a NAC filter, the *NAC* *Filter* editor contains the following tabs from which you can modifying information:

> Macro (legacy-content)

3. Save the configuration and click **Restart** if it appears at the top of the screen.

You can modify the MAC address filter items and match rules for corresponding MAC address filters and option filters. For information, see *<span style="color: #0000ff">[Modifying](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[MAC](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Address](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Filter](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Items](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971) and *<span style="color: #0000ff">[Viewing](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[DHCP](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)*<span style="color: #0000ff">[Filters](https://infoblox-docs.atlassian.net/wiki/spaces/nios85draft/pages/26477971)</span>*.

## > Macro (anchor)

Modifying MAC Address Filter Items

To modify a MAC address filter item:

1. From the **Data** **Management** tab, select the **DHCP** tab -> **Filters** tab -> *filter_name* -> *mac_filter* checkbox, and then click the Edit icon.
2. The *MAC* *Address* *Filter* *Item* editor contains the following tabs from which you can edit data:
  - **General**: Modify the fields as described in *<span style="color: #0000ff">[Adding](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[MAC](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Address](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Filter](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Items](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*.
  - **Registration**: Modify registration settings as described in *<span style="color: #0000ff">[Adding](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[MAC](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Address](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Filter](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)*<span style="color: #0000ff">[Items](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35914676/Configuring+MAC+Address+Filters#ConfiguringMACAddressFilters-bookmark2509)</span>*.
  - **Extensible** **Attributes**: Add or delete extensible attributes that are associated with a specific DHCP range. You can also modify the values of extensible attributes. For information, see *<span style="color: #0000ff">[Using](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)*<span style="color: #0000ff">[Extensible](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)*<span style="color: #0000ff">[Attributes](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#Using Extensible Attributes)</span>*[.](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35448912/Managing+Extensible+Attributes#bookmark868)
3. Save the configuration and click **Restart** if it appears at the top of the screen.

# > Macro (anchor)

> Macro (anchor)

Viewing DHCP Filters

To view DHCP filters:

1. From the **Data** **Management** tab, select the **DHCP** tab -> **Filters** tab.
2. Grid Manager displays the following for each filter:
  - **Name**: The name of the filter.
  - **Filter** **Type**: The filter type.
  - **Comment**: The information about the filter.
  - **Site**: The location to which the filter belongs. This is one of the predefined extensible attributes.

## > Macro (anchor)

Viewing MAC Address Filter Items

To view a list of MAC addresses in a specific MAC address filter:

1. From the **Data** **Management** tab, select the **DHCP** tab -> **Filters** tab -> *filter_name*.
2. Grid Manager displays the following:
  - **MAC** **Address**: The DHCP fingerprint information of client's device. This field is displayed only when users use captive portal for authentication. MAC address assigned to the filter.
  - **Username**: Grid Manager displays the username to which the MAC address belongs in the lease viewers.
  - **Comment**: The information you entered about the filter item.
  - **Expiration** **Time**: The expiration time you configured for the MAC address.
  - **Fingerprint**: The DHCP fingerprint information of client's device. This field is updated when users use Captive Portal for authentication.
  - **Site**: The location to which the filter belongs. This is one of the predefined extensible attributes.

# > Macro (anchor)

> Macro (anchor)

Deleting Filters

You can delete a filter that is not currently assigned to a DHCP range. You can also remove a filter from a DHCP range, and then delete the filter if it is not in use.  
To delete a filter:

1. From the **Data** **Management** tab, select the **DHCP** tab -> **Filters** tab -> *filter_name*, and then click the Delete icon.
2. In the *Delete* *Confirmation* dialog box, click **Yes**.

The appliance puts the deleted filters in the Recycle Bin, if enabled. You can later restore the filter if needed.

To schedule this task, click the Delete icon -> **Schedule** **Delete**. In the *Schedule* *Deletion* dialog box, click **Delete** **Later**, and then specify a date, time, and time zone.