Serve ad zone JS code locally to circumvent adblocks

Ad blockers can be circumvent by replacing a server address which hosts ad units’ script. This operation demands changes in server’s configuration.

Below is an example for the nginx server. This excerpt from configuration has a proxy defined for script main.js. The main.js script is responsible for adding ads on page.

# can be put in /etc/nginx/nginx.conf if you use multiple virtual servers
proxy_cache_path  /tmp/ads-cache  levels=1:2    keys_zone=ads:1m    inactive=24h  max_size=10m;

server {

# ... other site configuration options ... #

    location /main.js {
        expires 1h;
        proxy_pass https://ADSERVER_DOMAIN/main.js;
        proxy_ssl_server_name on;
        proxy_buffering on;

        proxy_cache            ads;
        proxy_cache_valid      200  1h;
        proxy_cache_use_stale  error timeout invalid_header updating;
    }
}

Typically the configuration can be found in /etc/nginx/sites-enabled/YOUR-SITE or /etc/nginx/conf.d/*.conf file. The ADSERVER_DOMAIN must be replaced with the valid domain. The AdServer’s domain can be obtained from common code for ad units. It is available on the site’s details page after clicking Get code button.

<!-- Common code for all ad units, should be inserted into head section -->
<script type="text/javascript" src="https://ADSERVER_DOMAIN/main.js" async></script>
<!-- End of common code -->

The AdServer’s domain can be replaced with the publisher’s site name, e.g.

<script type="text/javascript" src="https://example.com/main.js" async></script>

or left empty

<script type="text/javascript" src="/main.js" async></script>