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How to bypass nginx proxy a list of IPS

I have an Nginx config with the redirect to holding pages:

    location / {
        ...
        if ($setholdingpage = 'True') {
        rewrite (^.*$) /holding-page last;
        }
           proxy_pass $backend;
    }

Also, I have a list of IPs that should be whitelisted and not redirected to holding pages. How it’s possible to do?

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2

Answers


  1. 0

    You can make use of the allow deny directives.

    If I get you correct the whitelist will be your $setholdingpage variable in some sort?

    try this

    server {

error_page 403=@holding;

location / {
  allow 127.0.0.1;
  allow 192.168.1.0/24;
  deny all;

  proxy_pass http://backend;

}

location /@holding {
  root /path/to/your/holding/html;
  index holdingv1.html;
}

}

    This will send the non-whitelisted IPs to the error-page you specified. The error_page can be in the location as well.

    Not tested but this should do the trick.

    References:
    http://nginx.org/en/docs/http/ngx_http_access_module.html#allow

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  2. 0

    You can use the Nginx geo module to create a variable based upon client IP address, you can specify individual IP addresses or CIDR ranges:

    geo $bypassip {
  default 0;

  64.233.160.0/19 1;
  66.102.0.0/20 1;
}

    Then override your variable if the IP matches one in your list:

    if ($bypassip = 1){
  set $setholdingpage False;
}

    I use a similar setup to block certain geographic regions but still allow Google crawlers to access my site.

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