Reverse Proxy

The VGS reverse proxy intercepts traffic between the client (your APIs, Website, etc.) and the server. Reverse proxy filters replace sensitive information before forwarding the traffic/data to your server.

What does it allow you to do?

  • Rewrite requests or responses on the fly before data enters or leaves your system.
  • Operate on data outside of the scope of your backend systems.
  • Set/Change/Strip Headers.
  • Modify the payload even if it’s not a strict redaction/replacement.

How does it work?

  • You point your client API or Frontend to our reverse proxy and set the upstream in our dashboard to your server DNS.


  • BEFORE: →
  • AFTER: → →
  • ALTERNATIVELY: you can load your client website/app through the proxy. This is useful if your client and backend do not communicate via API. We can provide a CNAME to whitelabel this when you’re ready to use for production.

The Reverse Proxy directs traffic between the client-side (inbound) traffic, the VGS vault (where sensitive data is stored), and your backend systems as illustrated by the below image. reverse_proxy_img

How do I implement it?

Let’s take the easiest use case, an HTML form posting credit card data. You can serve your content via the proxy and this form will work with a sample echo server filter.

<form class="form-horizontal2 boxed" method="post" action="/post">
  <div class="panel panel-info">
    <div class="form-group">
      <div class="col-md-12">
        <label for="pan_number" id="pan_number_label">Credit Card Number</label>
        <input class="form-control" placeholder="Card Number" type="text" name="cc_number" id="pan_number" value="">
    <div class="form-group">
      <label for="pan_exp" id="pan_exp_label">CC Expiration</label>
      <input class="form-control" placeholder="Card Expiration" type="text" name="cc_exp" id="pan_exp">
  <div class="form-group">
    <label for="pan_cvv" id="pan_cvv_label">CC CVV</label>
    <input class="form-control" placeholder="CVV" type="text" name="cc_cvv" id="pan_cvv" value="">
  <div class="form-group">
    <span>Pay securely using your credit card</span>
  <button type="submit">Place Order</button>

In this example form, on any press of the submit button we post to the path in the action attribute in the form tag:

In order for the form to relay to your server, just change your upstream to in the like the image below.

Once you have this set-up you can work on your transformers and filters.

Encrypted Communication

VGS supports encryption to protect communications between VGS and your web application. VGS supports the TLS cryptographic protocol. Support for anything less than TLS1.2 is officially deprecated.

For more information regarding TLS:

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