Research, test, and document if/how Samizdat could be used behind NAT/firewall

An interesting question was asked on the Fediverse: could Samizdat be used to host content behind NAT/firewall.

The minimal requirements are:

• a HTTPS-enabled site to kick-start Service Worker (no need to host actual content there);
• a way to push content to wherever the deployed plugins can fetch() it from.

With current plugins this would mean:

• hosting a skeleton site on some public hosting service (GitLab pages, etc)
• figuring out if pushing content to Gun and IPFS can happen from behind a firewall, or if running Gun and IPFS daemons behind firewall works well.

Hypothetically this would be easier with a plugin using anything that does not require a publicly accessible daemon, like pushing content to WebArchive and fetching from there.