m4v3rick yes, that does make sense to make that permission work outside of the Admin CP especially for groups who can't view the Admin CP altogether 🙂
Feel free to submit a PR or wait until we have time to enhance this specific feature.
djalmasi the Banned IP list is currently only viewable in the Admin CP unfortunately 🙁 But, for your other issue, the one where you can't see the Ban IP button, are you trying to ban a user who is part of a group that cannot ban IP's? Please refer to datitisev's post with regards to what I'm asking 🙂
Can you also post the output of
php flarum info ran from the root directory of your Flarum install? This can help with troubleshooting while knowing what other extensions you might have installed that could be conflicting.