If you want to limit what people can authorize to your wiki, you may want to use the **whitelist**.
In `config.ini`, in the `[Authorization]` section, enable the white list in `UseWhiteList` and list all allowed usernames in the `WhiteList` field separated by comma:
```
...
[Authorization]
UseWhiteList = true
WhiteList = fish,pesce,рыба
...
```
Reload the wiki.
From now on, only these usernames can be used, ie you can only register and log in with these names. Others will be rejected.
