Changing the logo
You can replace the default Fortinet logo with your organization’s logo. First, import the logo file into the FortiGate unit and then modify the Login page code to reference your file.
To import a logo file
1. Go to System > Config > Replacement Messages and select Manage Images.
2. Select Create New.
3. Enter a Name for the logo and select the appropriate Content Type.
The file must not exceed 6000 bytes.
4. Select Browse, find your logo file and then select Open.
5. Select OK.
To specify the new logo in the replacement message
1. Go to WiFi Controller > WiFi Network > SSID and edit your SSID.
The SSID Security Mode must be Captive Portal.
2. Make sure that Customize Portal Messages is selected and then select the adjacent Edit icon.
3. In the Edit Message window, select the Login page message.
4. In the Message HTML, find the %%IMAGE tag.
By default it specifies the Fortinet logo:%%IMAGE:logo_fw_auth%%
5. Change the image name to the one you provided for your logo.
The tag should now read, for example, %%IMAGE:mylogo%%
6. Select OK.