Cachet/app/routes/auth.php

<?php

Route::group([
    'before' => 'has_setting:app_name',
    'namespace' => 'CachetHQ\Cachet\Http\Controllers',
    ], function () {
    Route::get('/auth/login', [
        'before' => 'guest',
        'as' => 'login',
        'uses' => 'AuthController@showLogin',
    ]);
    Route::post('/auth/login', [
        'before' => 'guest|csrf|login_throttling',
        'as' => 'logout',
        'uses' => 'AuthController@postLogin',
    ]);
});

Route::group([
    'before' => 'auth',
    'namespace' => 'CachetHQ\Cachet\Http\Controllers',
    ], function () {
    Route::get('/auth/logout', [
        'as' => 'logout',
        'uses' => 'AuthController@logoutAction',
    ]);
});