The only major change that affects the configuration policy is the
introduction of the `webhook.ALLOWED_HOST_LIST` setting. For some dumb
reason, the default value of this setting *denies* access to machines on
the local network. This makes no sense; why do they expect you to host
your CI or whatever on a *public* network? Of course, the only reason
given is "for security reasons."
Since Gitea servers may be exposed directly to the Internet, it is
important to prevent SSH tunneling, lest the server become an ingress
point into the network.
Additionally, the *gitea* user should not be allowed to use password
authentication, as this would only work if the user actually has a
password (which it does not) and would result in shell access instead of
Gitea.
Dustin