PDF not using CSS in .Net IIS Site

Aspose.PDF Product Family
1

We use Aspose to generate PDFs in a .Net based IIS site.
Everything works as expected. However, we are trying to use a cloud-based WAF, and PDFs generated when accessing the site through the WAF are missing fonts and images. During this same time, PDFs are generated successfully, when site is accessed directly.
User ->F5 GTM -> F5 LTM -> IIS Servers = PDF All Good
User -> WAF ->F5 GTM -> F5 LTM -> IIS Servers = PDF Missing CSS
In both cases, IIS Servers have host records pointing the site FQDN to the F5 LTM

I suspect the Aspose calls to css and fonts files, for some reason fail, when user connects through the WAF. Doesn’t make sense.
Would be great if there was a way to log any requests being made for the CSS and/or font files etc, so, we can see what is failing.
Any suggestions on what to check?
Thanks!

2

@Nikdha

It seems like the firewall is blocking the HTTP connection to access CSS and other resources during generation of the PDFs. We will surely look into further details of the issue. Would you kindly share some steps and sample data in order to replicate the issue at our side. We will test the scenario in our environment and address it accordingly.