How to leave those browsers that you need in $http_user_agent under nginx?

Question

Nginx

There is such a code.

if ($http_user_agent ~* msnbot|scrapbot) {
        return 403;
    }

It screens out normally, but how to do the opposite, prescribe the browsers and tablets that are, and all the other Mimi pass? 403 issue if not in the list?

Answer 1

You in the documentation, not here.
Try it!:

if (!$http_user_agent ~* msnbot|scrapbot) {
        return 403;
}

Answer 2

if ($http_user_agent !~* msnbot|scrapbot) {
        return 403;
}

nginx.org/ru/docs/http/ngx_http_rewrite_module.html#if