How do I rebrand the NAC captive portal page?

Guests who connect to a network protected by MetaDefender NAC may be redirected to a captive portal sign-in page hosted by My OPSWAT Central Management. By default, this page shows the OPSWAT logo and color scheme. You can replace the logo and colors with your own by creating a rebranding package and assigning it to the captive portal.

What can be customized

Element

Customizable

Logo at the top of the page

Yes

Page and sign-in card background colors

Yes

Text, button, link, and icon colors

Yes

Page text (for example, "Welcome to the network")

No

Page URL

No

The branding applies to the whole guest flow: sign-in, guest self-registration, forgot/set password, and the success and error pages.

Rebranding packages are shared

The same rebranding packages are also used for the MetaDefender Endpoint remediation page of any device groups they are assigned to. Changes to a package that is already in use affect every place it is assigned. Create a dedicated package for the captive portal if you want to brand them differently.

Step 1: Download the rebranding package template

  1. Go to Settings > Rebranding.

  2. Click Add New Package.

  3. Enter a Name (and optionally a Description) for the package.

  4. Under Rebranding, select Customize a package.

  5. Click English next to Download modern rebranding package for customization to download the template .zip file.


Keep this page open. You will upload the customized package here in Step 3.

Step 2: Customize the package

Extract the downloaded .zip file. Only the files below affect the captive portal. Leave all other files (category_*.json, rule_*.json, and the remaining keys in generic.json) unchanged.

Logo

Replace logo.png, light_logo.png, and dark_logo.png with your own logo. Keep the same file names and format:

  • Format: PNG (a transparent background is recommended)

  • Size: 264 x 112 pixels

Colors

Open generic.json and edit the nac_* keys inside the colors object. Each value must be a 6-digit hex color in the form #RRGGBB.

Key

Controls

Default

nac_guest_auth_background

Page background

#F4F4F5

nac_guest_auth_popup_background

Sign-in card background

#FFFFFF

nac_guest_auth_text_primary

Main text color; also tints input field borders, placeholders, and dividers

#1B273C

nac_button_primary_background

Primary button (Sign In) background

#3074FC

nac_button_primary_color

Primary button text

#FFFFFF

nac_button_secondary_color

Secondary button (Register a guest account) text

#1B273C

nac_link_text_color

Links (for example, Forgot password?)

#1D6BFC

nac_success_icon_color

Success icon

#008A00

nac_failed_icon_color

Error icon

#CB0704

nac_failed_background

Error message background

#FAE6E5

nac_trademark

Footer trademark text

#707682

For example:

"colors": {
...
"nac_button_primary_background": "#0B5394",
"nac_button_primary_color": "#FFFFFF",
"nac_guest_auth_background": "#EEF3F8",
"nac_link_text_color": "#0B5394",
...
}

Re-package

Compress the files back into a .zip file. The files must be at the root of the archive, not inside a folder.

  1. Return to the Add New Package page from Step 1.

  2. Confirm Customize a package is selected, click Choose File, and select your .zip file.

  3. Click Add.

Step 4: Assign the package to the captive portal

  1. Go to RADIUS NAC > Captive Portal and open the Guest Registration Setting tab.

  2. In Assigned Rebranding Package, select your package.

  3. Click Save.


Step 5: Verify

Connect a guest device to the network, or open the captive portal in a new private browser window, and confirm that your logo and colors appear. Branding is loaded when the portal page opens, so a page that is already open will not change until it is reloaded.

Notes

  • To return to OPSWAT branding, select Default in Assigned Rebranding Package (assuming the Default package has not itself been customized).

  • If an assigned package is deleted, the captive portal automatically reverts to the default OPSWAT branding.

  • If your logo or colors cannot be loaded, the portal falls back to the default OPSWAT branding. Guests can still sign in.


On This Page
How do I rebrand the NAC captive portal page?What can be customizedStep 1: Download the rebranding package templateStep 2: Customize the packageStep 3: Upload the packageStep 4: Assign the package to the captive portalStep 5: VerifyNotesLogoColorsRe-package