A Pre-shared key (PSK) is a simple way to guard access to a resource, with a "password" that can be used by any user to be recognized as able to access the server. Unlike a normal username+password, there is no way for the server to differentiate user and restrict access in different ways. This is a useful alternative to providing unlimited access for anonymous users.

This example will try to read from the URL to determine what the key is - if present, it will be autopopulated in the field below. Otherwise, paste the current key (can be found in the server logs) here. Then, click go to test the login. Note that by default, this key changes on each server startup, but the key can be specified in configuration to be consistent.