Follow the steps given below to setup the redirection from HTTP to HTTPS:

1. Stop the Service.

2. Go to the folder NetFlow_Home\conf (or) OpManager_Home\conf (for version 12) and open the file server.xml with WordPad. Find the below entry in the file server.xml

<¡--Connector port="6060"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" redirectPort="8443" acceptCount="100"
               debug="3" connectionTimeout="1800000"
               disableUploadTimeout="true"/-->

3. Remove '¡--' which is before Connector port="6060" and then remove -- which is after connectionTimeout="1800000" disableUploadTimeout="true".

4. Change the value 8080 to 80 and 8443 to 443 and save the file.

5. So after the changes the entry should be as shown below.

    <Connector port="80"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" redirectPort="443" acceptCount="100"
               debug="3" connectionTimeout="1800000"
               disableUploadTimeout="true" />

6. Go to the folder NetFlow_Home\webapps\ncm\WEB-INF\web.xml or OpManager_Home\WEB-INF\web.xml (for v12 and above)

Edit the web.xml file and search for the content below and add the lines in bold / highlighted.

        </auth-constraint>

    </security-constraint>

7. Start the ervice and check on the issue.