Make sure the certificate meets the AD FS and Web Application Proxy SSL certificate requirements; How many certificates are needed. It is recommended that you use a common SSL certificate across all AD FS and Web Application Proxy servers. For detailed requirements see the document AD FS and Web Application Proxy SSL certificate requirements

KB Article | Forcepoint Support Jun 11, 2020 7 Best Free Proxy Servers for Anonymous Web Surfing Apr 13, 2020 Proxy server - Wikipedia Encryption / SSL acceleration: when secure web sites are created, the Secure Sockets Layer (SSL) encryption is often not done by the web server itself, but by a reverse proxy that is equipped with SSL acceleration hardware. Furthermore, a host can provide a single "SSL proxy" to provide SSL encryption for an arbitrary number of hosts; removing Support - McAfee

If the web request works fine in your localhost with default proxy and not working in your web server, then you have to set your company's approved proxy and also whitelist the URL you are connecting to from your web application in the web server. You can mention the proxy settings either in web.config or in code.

If the SSL/TLS certificate itself is signed by a publicly trusted certificate authority (CA), such as SSL.com, the certificate will be implicitly trusted by client software such as web browsers and operating systems.Publicly trusted CAs have been approved by major software suppliers to validate identities that will be trusted on their platforms.

Working with Web proxies

SudoProxy uses optimized web proxy solution high end data security and free SSL encryption support which makes the transmission between user and proxy server fully encrypted and makes the user anonymous and also bypass censorship and geographical restriction providing user a … What is SSL? - SSL.com If the SSL/TLS certificate itself is signed by a publicly trusted certificate authority (CA), such as SSL.com, the certificate will be implicitly trusted by client software such as web browsers and operating systems.Publicly trusted CAs have been approved by major software suppliers to validate identities that will be trusted on their platforms. EdgeRouter - Web Proxy – Ubiquiti Networks Support and