Hi Murali,
Installation comes with a self-signed a SSL Certificate File and SSL Certificate Key file intended to be just a sample. They are, respectively:
installation directory/etc/keys/host/ht_host_rsa_key.crt
installation directory/etc/keys/host/ht_host_rsa_key
Administrators have to replace the sample SSL Certificate File and Key File with their own certificate self-signed or acquired from a CA.
Please, read more here: https://www.nomachine.com/DT03O00127#3
However, if you prefer, it is possible to use HTTP. all you have to do is to disable redirection on NoMachine server side.
To do that, please edit:
InstallationDirectory/etc/htd.cfg
and remove or comment out following lines:
<VirtualHost _default_:*>
RewriteEngine on
ReWriteCond %{SERVER_PORT} !^4443$
RewriteRule ^/(.*) https://%{SERVER_ADDR}:4443/nxwebplayer [R,L]
</VirtualHost>
restart nxhtd server:
InstallationDirectory/bin/nxserver --restart nxhtd
After that, you can access NoMachine Web Player by typing
http://<IP address>:4080