Setup a VPN client to test in VPN mode. OpenConnect is an SSL VPN client facilitates connectivity - http://www.infradead.org/openconnect

In Ubuntu 14.04 follow the below steps to setup OpenConnect. For reference - https://www.howtoinstall.co/en/ubuntu/trusty/openconnect

sudo apt-get update

sudo apt-get install openconnect

Then add an host entry as given below

sudo vi /etc/hosts

10.166.152.16 test.learnexa.com  

Execute the below command to connect into VPN environment. It will prompt for username & password.

sudo openconnect na1.cloud-vpn.net

Will get an output like:

POST https://na1.cloud-vpn.net/
Attempting to connect to server 168.143.80.196:443
SSL negotiation with na1.cloud-vpn.net
Connected to HTTPS on na1.cloud-vpn.net
Got HTTP response: HTTP/1.0 302 Object Moved
GET https://na1.cloud-vpn.net/
Attempting to connect to server 168.143.80.196:443
SSL negotiation with na1.cloud-vpn.net
Connected to HTTPS on na1.cloud-vpn.net
Got HTTP response: HTTP/1.0 302 Object Moved
GET https://na1.cloud-vpn.net/+webvpn+/index.html
SSL negotiation with na1.cloud-vpn.net
Connected to HTTPS on na1.cloud-vpn.net
Please enter your username and password.
Username:
Password:
POST https://na1.cloud-vpn.net/+webvpn+/index.html
Failed to write to SSL socket: Error in the push function.
SSL negotiation with na1.cloud-vpn.net
Connected to HTTPS on na1.cloud-vpn.net
Got CONNECT response: HTTP/1.1 200 OK
CSTP connected. DPD 30, Keepalive 20
Connected tun0 as 10.163.255.246 + 2607:f480:101:ffff::35, using SSL
Established DTLS connection (using OpenSSL)

Then hit - https://test.learnexa.com/ to test in VPN mode.

To switch to a particular application server, use browser add-on or extension to edit cookie 'SERVERID' value.

For example in Firefox use Firebug add-on. Follow the steps as illustrated below: