Installing the Reverse Proxy Server

To install the reverse proxy server, you need to manipulate the DNS configurations to support the reverse proxy.

Once installed you must maintain the reverse proxy software.
Ensure the host on which you install the reverse proxy is capable of handling all the traffic to the CDSW application.
The following examples use Ubuntu.
CDSW supports only the standard port 80 and 443 for http/https traffic. It is not supported to configure a non-standard port for the CDSW.

Install the Apache HTTP server.

For example:

sudo apt-get update
sudo apt-get install apache2

Validate the configuration in the /etc/apache2/apache2.conf file.
For example:
```
sudo apache2ctl configtest
```

If you receive the following warning:

AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
Syntax OK

you can fix it by adding the following configuration to /etc/apache2/apache2.conf:

ServerName server_domain_or_IP

If you have a firewall installed, ensure the firewall is configured to allow traffic to the Apache HTTP server.
Validate the Apache HTTP server installation:
```
http://your_server_IP_address
```
You should see the operating system default page.