How to enable HTTP Strict-Transport-Security (HSTS) response header
From Applications Manager v16250, the super administrator has the option of enabling HSTS.
The RFC 6797-specified HTTP Strict Transport Security (HSTS) protocol enables a website to identify itself as a secure host and notify browsers that HTTPS connections are the only acceptable method of communication. HSTS is an optional security upgrade that makes HTTPS mandatory and drastically lowers the chances of man-in-the-middle attacks that intercepts requests and replies sent between servers and clients.
Please follow the steps below to enable the HSTS response header:
- Open Applications Manager.
- Navigate to Settings -> Product Settings -> Security Settings.
- Click on the Configure Now button next to the Enable Security response Headers option.
Then enable HTTP-Strict-Transport-Security(HSTS) option.
- Browsers will ignore the Strict-Transport-Security header if the server is configured with a self-signed certificate. So you will need to replace default self signed certificate that comes with Applications Manager with a signed certificate.
- To know whether the SSL certificate is considered secure by the browser, check for the Lock icon next to web address bar which should display "Connection is secure".
- See how to import SSL certificates in Applications Manager here - Manage Certificates.
- Below prerequisite applies to Applications Manager plugin (In OpManager) installation only:
- Enable HTTPs and HSTS in OpManager before enabling in Applications Manager
The easiest way to check if you have enabled HSTS is by launching the Chrome Devtools. Click on the Network tab and check the headers tab. You will see something similar below:
Alternatively, run the below curl command:
Note: Replace <apm-hostname> and <apm-https-port> with Applications Manager's hostname and HTTP port.
Post enabling HSTS
- Ensure that the SSL certificates are up to date and imported into Applications Manager before the expiry date.
- Access Applications Manager only via domain names configured in SSL certificate.
- Incase you encounter any SSL certificate errors, Applications Manager will not be allowed to access by the browser. As a workaround remove HSTS policy in browser settings by following below steps:
- Type chrome://net-internals/#hsts in the browser address bar.
- Enter the complete domain in Delete domain security policies field and press Enter.
- Now try accessing Applications Manager.
Note: HSTS policy will be automatically be applied once again when SSL certificate errors have been resolved and Connection is secure.
- Since browsers will access Applications Manager only via https:// now, consider disabling http port for additional security. See how to disable HTTP access in Applications Manager.
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