* Websites are big and take a long time to download.
* They had previously solved this problem with a caching server but theirs broke with TLS.
The author is apparently unaware of the options they have.
* Run a proxy server that caches pages. Basically all software supports proxies. Secure and well understood. No PKI to manage. And you can allow access to the proxy with no TLS or get a public cert. Works very well with those old devices too.
* Run a HTTPS caching server and add the CA to the systems. Little more effort but transparent.
* Websites are big and take a long time to download.
* They had previously solved this problem with a caching server but theirs broke with TLS.
The author is apparently unaware of the options they have.
* Run a proxy server that caches pages. Basically all software supports proxies. Secure and well understood. No PKI to manage. And you can allow access to the proxy with no TLS or get a public cert. Works very well with those old devices too.
* Run a HTTPS caching server and add the CA to the systems. Little more effort but transparent.