Cross Domain Embeds

If you are using Know's cloud managed service and wish to serve Knowi on your page served from your own domain to avoid any modern browser crossdomain errors, you can add a proxy inside your domain to forward the traffic to Knowi. 

While there are a number of ways to achieve this, we will use the forever popular apache web server in this post: 

Throughout this document, we will assume the following

1. Your domain is example.com
2. You want to forward all requests to https://proxy.example.com to https://www.knowi.com
3. You have access to your SSL private.key, cert.crt, and optionally intermediate.crt for your example.com domain.

Setting up apache web server:

1. Install httpd on your server using any kind of package management if available or manually from https://httpd.apache.org/docs/current/install.html.  For example, using yum:

sudo yum install -y httpd

       2. Similarly, install mod_ssl for httpd and openssl using package management or manually http://www.modssl.org/example/.  For example:

sudo yum install mod_ssl openssh

       3. Edit /etc/httpd/conf/httpd.conf file to add the following:

<VirtualHost *:443>

    ServerName proxy.example.com

    <Proxy *>

        Order deny,allow

        Allow from all

    </Proxy>

    SSLEngine On

    SSLCertificateFile /path/to/file/cert.crt

    SSLCertificateKeyFile /path/to/file/private.key

    SSLCertificateChainFile /path/to/file/intermediate.crt

    SSLProxyEngine On

    SSLProxyVerify none

    SSLProxyCheckPeerCN off

    SSLProxyCheckPeerName off

    SSLProxyCheckPeerExpire off

    ProxyRequests On

    ProxyPreserveHost Off

    ProxyPass / https://www.knowi.com/

</VirtualHost>

     4. Restart httpd.

sudo systemctl restart httpd