RfWebUI in ADC is a mobile-friendly theme, adapts fluidly to different screen layouts, and supports Citrix Receiver Extension APIs making customizing a lot easier. Moreover this is a supported approach from Citrix based on their nfactor extensibility framework.
The two files we are interested in adding a disclaimer to the login page are scripts.js and style.css. The JS file would hold the actual text and the CSS file would hold the styling code. Sample below. <RfWebUI-Custom> would be your custom theme name.
/var/netscaler/logon/themes/<RfWebUI-Custom>/scripts.js
$('.customAuthFooter').html("Disclaimer: All information, software, services, and comments provided on the site are for informational and self-help purposes only and are not intended to be a substitute for professional advice.");customAuthFooter is an out of the box HTML ID for RfWebUI theme, others ID your might be interested are customAuthBottom and customAuthHeader HTML IDs.
/var/netscaler/logon/themes/<RfWebUI-Custom>/style.css
.customAuthFooter {
bottom: 0;
font-size: 12px;
color: white;
text-align: center;
background-color: black;
}End Result
Invalidate staticobjects cache to see the changes right away
References >
https://www.citrix.com/content/dam/citrix/en_us/citrix-developer/documents/receiver-apis.html
https://docs.citrix.com/en-us/citrix-adc/current-release/aaa-tm/authentication-methods/multi-factor-nfactor-authentication/nfactor-extensibility.html