There are some known client-side misconfigurations. If they were not already caught by the local RADIUS
server, it does not make sense for the proxy to send these requests up to the eduroam infrastructure. These
requests are immediately rejected.
Note: if you need to blacklist an existing realm for some reason, you can follow the myabc.com example,
copying and replacing it with the realm to be blacklisted.
Requests that are coming in from upstream and are supposed to be handled by the own RADIUS server are
listed in _OWN_REALM_. Create multiples of these stanzas if your local server serves more than one realm.