Can Caddy function as a (transparent) forward proxy with TLS interception similar to squid proxy?
GitHub - caddyserver/forwardproxy: Forward proxy plugin for the Caddy web server only mentions http
I believe so.
FYI, I don’t think that plugin has completed support for Caddy v2 yet, but there is a branch with some progress: GitHub - caddyserver/forwardproxy at caddy2
It would be best to ask your questions on that repo about the specifics.