'providers' => array(
    # other providers omitted
    'Fideloper\Proxy\TrustedProxyServiceProvider',
);

    protected $middleware = [
        // Illuminate middlewares omitted for brevity
        'Fideloper\Proxy\TrustProxies',

<?php
return [
    'proxies' => [
        '192.168.10.10',
    ],
    // These are defaults already set in the config:
    'headers' => [
        (defined('Illuminate\Http\Request::HEADER_FORWARDED') ? Illuminate\Http\Request::HEADER_FORWARDED : 'forwarded') => 'FORWARDED',
        \Illuminate\Http\Request::HEADER_CLIENT_IP    => 'X_FORWARDED_FOR',
        \Illuminate\Http\Request::HEADER_CLIENT_HOST  => 'X_FORWARDED_HOST',
        \Illuminate\Http\Request::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
        \Illuminate\Http\Request::HEADER_CLIENT_PORT  => 'X_FORWARDED_PORT',
    ]
];

<?php
return [
    'proxies' => [
        '192.168.10.10',
    ],
    // These are defaults already set in the config:
    'headers' => [
        (defined('Illuminate\Http\Request::HEADER_FORWARDED') ? Illuminate\Http\Request::HEADER_FORWARDED : 'forwarded') => null,
        \Illuminate\Http\Request::HEADER_CLIENT_IP    => 'X_FORWARDED_FOR',
        \Illuminate\Http\Request::HEADER_CLIENT_HOST  => null,
        \Illuminate\Http\Request::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
        \Illuminate\Http\Request::HEADER_CLIENT_PORT  => 'X_FORWARDED_PORT',
    ]
];