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Accepted
Tom
Asked: 2012-01-06 11:07:21 +0800 CST

How Do I Refuse a Request to a Subdomain in Nginx

  • 772

If my configuration looks something like

server {
  listen 80;
  server_name example.com;
}

how do I refuse requests to subdomain.example.com?

subdomain nginx

3 Answers

  1. Best Answer
    server {
    listen 80;
    server_name subdomain.example.com;
    deny all;
}

    Or, if you wanted to drop all traffic that wasn't to a domain explicitly defined in another server block in your config:

    server {
    listen 80 default_server;
    server_name _;
    deny all;
}
    • 7

  2. Shane Madden's answer will work, or you may also use the non-standard response code 444, which will kill the connection without sending any headers (source: http://wiki.nginx.org/HttpRewriteModule)

    To block specific subdomains:

    server {
    server_name subdomain.example.com;
        return 444;
}

    Or to block all subdomains or domains that are not handled elsewhere:

    server {
    server_name _;
    return 444;
}

    The latter option is useful when blocking domains that are duplicating your content and thus may hurt your search engine rankings. (This comes from personal experience.)

    • 2

  3. If your subdomain have trafic, better redirect all request from subdomain to domain like this

            if ($http_host != "example.com") {
            rewrite ^ http://example.com$request_uri permanent;
    }

    in server section

    It's SEO friendly.

    • 1